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Page 2 DAQ X Series X Series User Manual NI 632x/634x/635x/636x Devices X Series User Manual Français Deutsch ni.com/manuals February 2012 370784D-01 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 3 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 683 0100 For further support information, refer to the Technical Support and Professional Services appendix. To comment on National Instruments documentation, refer to the National Instruments Web site at and enter ni.com/info the Info Code feedback ©...
Page 4 Instruments Corporation. National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
Page 5 NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 6 Furthermore, any changes or modifications to the product not expressly approved by National Instruments could void your authority to operate it under your local regulatory rules.
Page 7: Table Of Contents
Custom Cabling and Connectivity ............2-7 USB Device Mounting Accessories, USB Cable, Power Supply, and Ferrite ..................2-7 USB Screw Terminal Device Accessories ............2-8 © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 8 Contents Signal Conditioning....................... 2-8 Sensors and Transducers ................. 2-8 Signal Conditioning Options................2-9 SCXI ....................2-9 SCC....................2-9 Programming Devices in Software................2-10 Chapter 3 Connector and LED Information I/O Connector Signal Descriptions................3-1 +5 V Power Source......................3-3 PCI Express Device Disk Drive Power Connector ............3-4 When to Use the Disk Drive Power Connector ..........
Page 9 AI Start Trigger Signal..............4-57 AI Reference Trigger Signal .............4-59 AI Pause Trigger Signal ..............4-61 Getting Started with AI Applications in Software ..........4-62 © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 10 Contents Chapter 5 Analog Output AO Reference Selection ....................5-2 Minimizing Glitches on the Output Signal..............5-3 Analog Output Data Generation Methods..............5-3 Software-Timed Generations ................5-3 Hardware-Timed Generations................. 5-3 Analog Output Triggering ..................... 5-5 Connecting Analog Output Signals ................5-5 Analog Output Timing Signals..................
Page 11 DI Change Detection Applications..............6-25 Digital Filtering......................6-25 Watchdog Timer....................6-28 Connecting Digital I/O Signals..................6-29 Getting Started with DIO Applications in Software ............6-30 © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 12 Contents Chapter 7 Counters Counter Timing Engine ....................7-2 Counter Input Applications ................... 7-3 Counting Edges ....................7-3 Single Point (On-Demand) Edge Counting ........7-4 Buffered (Sample Clock) Edge Counting......... 7-5 Controlling the Direction of Counting..........7-5 Pulse-Width Measurement ................7-6 Single Pulse-Width Measurement ............
Page 13 Routing Counter n Internal Output to an Output Terminal....7-47 Frequency Output Signal.................7-47 Routing Frequency Output to a Terminal .........7-47 Default Counter/Timer Pinouts..................7-47 Counter Triggering ......................7-50 © National Instruments xiii X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 14 Contents Other Counter Features....................7-51 Cascading Counters..................7-51 Prescaling ......................7-51 Synchronization Modes................... 7-52 100 MHz Source Mode..............7-52 External Source Greater than 25 MHz..........7-52 External or Internal Source Less than 25 MHz ........ 7-53 Chapter 8 Using PFI Terminals as Timing Input Signals .............. 8-2 Exporting Timing Output Signals Using PFI Terminals..........
Page 15 NI 6351/6361 .........................A-12 NI 6353/6363 .........................A-16 NI 6356/6366 .........................A-22 NI 6358/6368 .........................A-27 Appendix B Troubleshooting Appendix C Technical Support and Professional Services © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 16 Contents Glossary Index Device Pinouts Figure A-1. NI PCIe-6320 Pinout................A-3 Figure A-2. NI PCIe-6321 and NI PCIe/PXIe-6341 Pinout ........A-6 Figure A-3. NI USB-6341 Pinout................A-7 Figure A-4. NI PCIe-6323/6343 Pinout ..............A-8 Figure A-5. NI USB-6343 Pinout................A-10 Figure A-6.
Page 17: About This Manual
Platform Text in this font denotes a specific platform and indicates that the text following it applies only to that platform. © National Instruments xvii X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 18: Related Documentation
The NI-DAQ Readme lists which devices, ADEs, and NI application software are supported by this version of NI-DAQ. Select Start» All Programs»National Instruments»NI-DAQ»NI-DAQ Readme. The NI-DAQmx Help contains general information about measurement concepts, key NI-DAQmx concepts, and common applications that are applicable to all programming environments.
Page 19 For help with NI-DAQmx methods and properties, refer to NationalInstruments.DAQmx Namespace, NationalInstruments.DAQmx.ComponentModel Namespace, or NI-DAQmx Visual C++ Class Library Overview. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 20 Select Start»All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. The NI-DAQmx C Reference Help describes the NI-DAQmx Library functions, which you can use with National Instruments data acquisition devices to develop instrumentation, acquisition, and control applications. Select Start»All Programs»National Instruments»NI-DAQ» Text-Based Code Support»NI-DAQmx C Reference Help.
Page 21 NI products, NI offers training courses. To enroll in a course or obtain a detailed course outline, refer to ni.com/training © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 22 Adobe Acrobat Reader with Search and Accessibility 5.0.5 or later installed to view the PDFs. Refer to the Adobe Systems Incorporated Web site at to download Acrobat Reader. Refer to the www.adobe.com National Instruments Product Manuals Library at ni.com/manuals updated documentation resources. X Series User Manual xxii ni.com...
Page 23: Getting Started
• Touch the antistatic package to a metal part of your computer chassis before removing the device from the package. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 24: Device Self-Calibration
Chapter 1 Getting Started Remove the device from the package and inspect it for loose components or any other signs of damage. Notify NI if the device appears damaged in any way. Do not install a damaged device in your computer or chassis. Store the device in the antistatic package when the device is not in use.
Page 25: Getting Started With X Series Usb Devices
USB device, as shown in Figure 1-1. The wire should be as short as possible. Figure 1-1. Grounding an NI USB-634x/635x/636x Screw Terminal Device through the Chassis Ground Lug © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 26: Ferrite Installation
Chapter 1 Getting Started Ferrite Installation To ensure the specified EMC (NI USB-636 Mass Termination Devices) performance for radiated RF emissions of the NI USB-636x Mass Termination device, install the included snap-on ferrite bead onto the power cable, as shown in Figure 1-2. Ensure that the ferrite bead is as close to the end of the power cable as practical.
Page 27: Mounting X Series Usb Devices
While holding the USB X Series device in place, attach the front bracket to the backpanel wall mount by tightening the two thumbscrews. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 28: Din Rail Mounting
Chapter 1 Getting Started DIN Rail Mounting Complete the following steps to mount your USB X Series device to a DIN rail using the USB X Series mounting kit with DIN rail clip (part number 781515-01 not included in your X Series USB device kit). Fasten the DIN rail clip to the back of the backpanel wall mount using a #1 Phillips screwdriver and four machine screws (part number 740981-01), included in the kit as shown in Figure 1-4.
Page 29: Usb Device Leds
1 Locking USB Cable Jackscrew 2 Jackscrew Hole 3 Security Cable Slot Figure 1-6. USB Cable Strain Relief on X Series USB Devices © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 30: Usb Device Security Cable Slot
Chapter 1 Getting Started USB Device Security Cable Slot The security cable slot, shown in (NI USB-634x/635x/636x Devices) Figure 1-6, allows you to attach an optional laptop lock to your X Series USB device. The security cable is designed to act as a deterrent, but might not prevent the device Note from being mishandled or stolen.
Page 31: Daq System Overview
I/O signals. Figure 2-2 features components common to all X Series devices. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 32: Daq-Stc3
Chapter 2 DAQ System Overview Analog Input Analog Output Digital Routing Digital I/O and Clock Interface Generation Counters RTSI Figure 2-2. General X Series Block Diagram DAQ-STC3 The DAQ-STC3 and DAQ-6202 implement a high-performance digital engine for X Series data acquisition hardware. Some key features of this engine include the following: •...
Page 33: Calibration Circuitry
EMC specifications are no longer guaranteed unless all unshielded cables and/or accessories are installed in a shielded enclosure with properly designed and shielded input/output ports. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 34: Scxi Accessories
Chapter 2 DAQ System Overview NI offers a variety of products to use with X Series PCI Express, PXI Express, and USB Mass Termination devices, including cables, connector blocks, and other accessories, as follows: • Shielded cables and cable assemblies, and unshielded ribbon cables and cable assemblies •...
Page 35: Scc Accessories
You can use one BNC accessory with the signals on either connector of your X Series device. You can use two BNC accessories with one X Series device by using both connectors. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 36: Screw Terminal Accessories
Chapter 2 DAQ System Overview Screw Terminal Accessories National Instruments offers several styles of screw terminal connector blocks. Use an SHC68-68-EPM shielded cable to connect an X Series device to a connector block, such as the following: • CB-68LP and CB-68LPR—Unshielded connector blocks •...
Page 37: Custom Cabling And Connectivity
Universal power supply with mini-combicon connector, 12 VDC, 2.5 A—Part number 781513-01 • EMI suppression ferrites, 10.2 mm length—Part number 781233-02 © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 38: Usb Screw Terminal Device Accessories
Chapter 2 DAQ System Overview USB Screw Terminal Device Accessories NI offers a variety of products to use with USB Screw Terminal X Series devices, as follows: • USB X Series mounting kit—Part number 781514-01 • USB X Series mounting kit with DIN rail clip—Part number 781515-01 •...
Page 39: Signal Conditioning Options
SCC systems also offer the most comprehensive and flexible signal connectivity options. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 40: Programming Devices In Software
X Series Simultaneous MIO (SMIO) devices do not support SCC. Programming Devices in Software National Instruments measurement devices are packaged with NI-DAQmx driver software, an extensive library of functions and VIs you can call from your application software, such as LabVIEW or LabWindows/CVI, to program all the features of your NI measurement devices.
Page 41 NI-DAQmx 9.5 and later NI USB-634x/6351/6353/6361/6363 NI-DAQmx 9.2 and later Screw Terminal NI USB-6356/6366 Screw Terminal NI-DAQmx 9.2.1 and later © National Instruments 2-11 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 42: Connector And Led Information
I/O Connector Signal Descriptions Table 3-1 describes the signals found on the I/O connectors. Not all signals are available on all devices. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 43 Chapter 3 Connector and LED Information Table 3-1. I/O Connector Signals Signal Name Reference Direction Description AI GND — — Analog Input Ground—These terminals are the reference point for single-ended AI measurements in RSE mode and the bias current return point for DIFF measurements. All three ground references—AI GND, AO GND, and D GND—are connected on the device.
Page 44: +5 V Power Source
The power rating on most devices is +4.75 VDC to +5.25 VDC at 1 A. Refer to the specifications document for your device to obtain the device power rating. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 45: Pci Express Device Disk Drive Power Connector
Chapter 3 Connector and LED Information Note (PCI Express X Series Devices) PCI Express X Series devices supply less than 1 A of +5 V power unless you use the disk drive power connector. Refer to the PCI Express Device Disk Drive Power Connector section for more information. PCI Express Device Disk Drive Power Connector (NI PCIe-632x/634x/635x/636x Devices) The disk drive power connector is a...
Page 46: Rtsi Connector Pinout
The device is configured, but there is no activity over the bus. The device is configured and there is activity over the bus. Blinking © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 47: Analog Input
Analog Input Ground-Reference Settings section. Also refer to Appendix A, Device-Specific Information, for device I/O connector pinouts. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 48: Analog Input Range
Chapter 4 Analog Input • Mux—Each MIO X Series device has one analog-to-digital converter (ADC). The multiplexers (mux) route one AI channel at a time to the ADC through the NI-PGIA. • Ground-Reference Settings—The analog input ground-reference settings circuitry selects between differential, referenced single-ended, and non-referenced single-ended input modes.
Page 49 16 μV –500 mV to 500 mV 6.4 μV –200 mV to 200 mV 3.2 μV –100 mV to 100 mV © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 50: Working Voltage Range
Chapter 4 Analog Input Working Voltage Range On most MIO X Series devices, the PGIA operates normally by amplifying signals of interest while rejecting common-mode signals under the following three conditions: • The common-mode voltage (V ), which is equivalent to subtracting AI <0..x>...
Page 51 Exceeding the maximum input voltage rating also can damage the device and the computer. NI is not liable for any damage resulting from such signal connections. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 52: Configuring Ai Ground-Reference Settings In Software
Chapter 4 Analog Input AI ground-reference setting is sometimes referred to as AI terminal configuration. Configuring AI Ground-Reference Settings in Software You can program channels on an MIO X Series device to acquire with different ground references. To enable multimode scanning in LabVIEW, use NI-DAQmx Create of the NI-DAQmx API.
Page 53 The capacitance of the cable also can increase the settling time. National Instruments recommends using individually shielded, twisted-pair wires that are 2 m or less to connect AI signals to the device. Refer to the...
Page 54 Chapter 4 Analog Input Suppose a 4 V signal is connected to channel 0 and a 1 mV signal is connected to channel 1. The input range for channel 0 is –10 V to 10 V and the input range of channel 1 is –200 mV to 200 mV. When the multiplexer switches from channel 0 to channel 1, the input to the NI-PGIA switches from 4 V to 1 mV.
Page 55: Analog Input Data Acquisition Methods
Analog Input Data Acquisition Methods When performing analog input measurements, you either can perform software-timed or hardware-timed acquisitions. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 56: Software-Timed Acquisitions
Chapter 4 Analog Input Software-Timed Acquisitions With a software-timed acquisition, software controls the rate of the acquisition. Software sends a separate command to the hardware to initiate each ADC conversion. In NI-DAQmx, software-timed acquisitions are referred to as having on-demand timing. Software-timed acquisitions are also referred to as immediate or static acquisitions and are typically used for reading a single sample of data.
Page 57: Analog Input Triggering
Connecting Analog Input Signals Table 4-3 summarizes the recommended input configuration for both types of signal sources. © National Instruments 4-11 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 58 Chapter 4 Analog Input Table 4-3. MIO X Series Analog Input Configuration Floating Signal Sources (Not Connected to Building Ground-Referenced † Ground) Signal Sources Examples: Example: • Ungrounded thermocouples • Plug-in instruments with non-isolated outputs • Signal conditioning with isolated outputs AI Ground-Reference Setting •...
Page 59: Connecting Floating Signal Sources
The leads connecting the signal to the device are less than 3 m (10 ft). DIFF input connections are recommended for greater signal integrity for any input signal that does not meet the preceding conditions. © National Instruments 4-13 X Series User Manual...
Page 60: When To Use Referenced Single-Ended (Rse) Connections With Floating Signal Sources
Chapter 4 Analog Input In the single-ended modes, more electrostatic and magnetic noise couples into the signal connections than in DIFF configurations. The coupling is the result of differences in the signal path. Magnetic coupling is proportional to the area between the two signal conductors. Electrical coupling is a function of how much the electric field differs between the two conductors.
Page 61: Using Differential Connections For Floating Signal Sources
This configuration does not load down the source (other than the very high input impedance of the NI-PGIA). © National Instruments 4-15 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 62 Chapter 4 Analog Input MIO X Series Device Floating Signal Source – AI– R is about AI SENSE 100 times source AI GND impedance of sensor Figure 4-5. Differential Connections for Floating Signal Sources with Single Bias Resistor You can fully balance the signal path by connecting another resistor of the same value between the positive input and AI GND, as shown in Figure 4-6.
Page 63 Figure 4-7. © National Instruments 4-17 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 64: Using Non-Referenced Single-Ended (Nrse) Connections For Floating Signal Sources
Chapter 4 Analog Input MIO X Series Device AC Coupling AC Coupled Floating Signal – Source AI– AI SENSE AI GND Figure 4-7. Differential Connections for AC Coupled Floating Sources with Balanced Bias Resistors Using Non-Referenced Single-Ended (NRSE) Connections for Floating Signal Sources It is important to connect the negative lead of a floating signals source to AI GND (either directly or through a resistor).
Page 65: Using Referenced Single-Ended (Rse) Connections For Floating Signal Sources
Refer to the Configuring AI Ground-Reference Settings in Software section for more information about the DAQ Assistant. © National Instruments 4-19 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 66: Connecting Ground-Referenced Signal Sources
Chapter 4 Analog Input Connecting Ground-Referenced Signal Sources What Are Ground-Referenced Signal Sources? A ground-referenced signal source is a signal source connected to the building system ground. It is already connected to a common ground point with respect to the device, assuming that the computer is plugged into the same power system as the source.
Page 67: When To Use Non-Referenced Single-Ended (Nrse) Connections With Ground-Referenced Signal Sources
As shown in the bottom-rightmost cell of Table 4-3, there can be a potential difference between AI GND and the ground of the sensor. In RSE mode, this ground loop causes measurement errors. © National Instruments 4-21 X Series User Manual...
Page 68: Using Differential Connections For Ground-Referenced Signal Sources
Chapter 4 Analog Input Using Differential Connections for Ground-Referenced Signal Sources Figure 4-10 shows how to connect a ground-referenced signal source to the MIO X Series device configured in differential mode. AI + Ground- Referenced Instrumentation Signal Amplifier – Source PGIA AI –...
Page 69: Using Non-Referenced Single-Ended (Nrse) Connections For Ground-Referenced Signal Sources
RSE ground-reference setting, this difference in ground potentials would appear as an error in the measured voltage. © National Instruments 4-23 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 70: Field Wiring Considerations
Chapter 4 Analog Input Using the DAQ Assistant, you can configure the channels for RSE or NRSE input modes. Refer to the Configuring AI Ground-Reference Settings in Software section for more information about the DAQ Assistant. Field Wiring Considerations Environmental noise can seriously affect the measurement accuracy of the device if you do not take proper care when running signal wires between signal sources and the device.
Page 71 AI Convert Clock controls the Convert Period, which is determined by the following equation: 1/Convert Period = Convert Rate © National Instruments 4-25 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 72 Chapter 4 Analog Input Posttriggered data acquisition allows you to view only data that is acquired after a trigger event is received. A typical posttriggered DAQ sequence is shown in Figure 4-14. The sample counter is loaded with the specified number of posttrigger samples, in this example, five.
Page 73: Aggregate Versus Single Channel Sample Rates
MIO X Series Device Single Channel (Aggregate) NI 632x 250 kS/s 250 kS/s NI 634x 500 kS/s 500 kS/s © National Instruments 4-27 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 74: Ai Sample Clock Signal
Chapter 4 Analog Input Table 4-4. Analog Input Rates for MIO X Series Devices (Continued) Analog Input Rate Multi-Channel MIO X Series Device Single Channel (Aggregate) NI 6351/6353 1.25 MS/s 1 MS/s NI 6361/6363 2 MS/s 1 MS/s On NI 6351/6353/6361/6363 devices, the single channel rate is higher than the aggregate rate because while the ADC can sample at that rate, the PGIA cannot settle fast enough to meet accuracy specifications.
Page 75 AI Convert Clock Signal section for more information about the timing requirements between AI Convert Clock and AI Sample Clock. © National Instruments 4-29 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 76: Ai Sample Clock Timebase Signal
Chapter 4 Analog Input Figure 4-16 shows the relationship of AI Sample Clock to AI Start Trigger. AI Sample Clock Timebase AI Start Trigger AI Sample Clock Delay From Start Trigger Figure 4-16. AI Sample Clock and AI Start Trigger AI Sample Clock Timebase Signal You can route any of the following signals to be the AI Sample Clock Timebase (ai/SampleClockTimebase) signal:...
Page 77: Ai Convert Clock Signal
Several other internal signals can be routed to AI Convert Clock through internal routes. Refer to Device Routing in MAX in the NI-DAQmx Help or the LabVIEW Help for more information. © National Instruments 4-31 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 78 Chapter 4 Analog Input Using an External Source Use one of the following external signals as the source of AI Convert Clock: • PFI <0..15> • RTSI <0..7> • PXI_STAR • PXIe-DSTAR<A,B> • Analog Comparison Event (an analog trigger) Routing AI Convert Clock Signal to an Output Terminal You can route AI Convert Clock (as an active low signal) out to any PFI <0..15>, RTSI <0..7>, or PXIe-DSTARC terminal.
Page 79 Sample #3 Figure 4-19. AI Convert Clock Too Fast For AI Sample Clock; AI Convert Clock Pulses Are Ignored © National Instruments 4-33 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 80: Ai Convert Clock Timebase Signal
Chapter 4 Analog Input AI Sample Clock AI Convert Clock Channel Measured Sample #1 Sample #2 Sample #3 Figure 4-20. AI Sample Clock and AI Convert Clock Improperly Matched; Leads to Aperiodic Sampling AI Sample Clock AI Convert Clock 1 2 3 1 2 3 Channel Measured 1 2 3...
Page 81: Ai Start Trigger Signal
Waveform information from LabVIEW will not reflect the delay between triggers. They will be treated as a continuous acquisition with constant t0 and dt information. Reference triggers are not retriggerable. © National Instruments 4-35 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 82 Chapter 4 Analog Input Using a Digital Source To use AI Start Trigger with a digital source, specify a source and an edge. The source can be any of the following signals: • PFI <0..15> • RTSI <0..7> • Counter n Internal Output •...
Page 83: Ai Reference Trigger Signal
Figure 4-23 shows the final buffer. Reference Trigger Pretrigger Samples Posttrigger Samples Complete Buffer Figure 4-23. Reference Trigger Final Buffer © National Instruments 4-37 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 84: Ai Pause Trigger Signal
Chapter 4 Analog Input Using a Digital Source To use AI Reference Trigger with a digital source, specify a source and an edge. The source can be any of the following signals: • PFI <0..15> • RTSI <0..7> • PXI_STAR •...
Page 85 The source also can be one of several other internal signals on your DAQ device. Refer to Device Routing in MAX in the NI-DAQmx Help or the LabVIEW Help for more information. © National Instruments 4-39 X Series User Manual...
Page 86: Getting Started With Ai Applications In Software
Chapter 4 Analog Input Using an Analog Source When you use an analog trigger source, the internal sample clock pauses when the Analog Comparison Event signal is low and resumes when the signal goes high (or vice versa). Routing AI Pause Trigger Signal to an Output Terminal You can route AI Pause Trigger out to any PFI <0..15>, RTSI <0..7>, PXI_STAR, or PXIe-DSTARC terminal.
Page 87: Analog Input On Simultaneous Mio X Series Devices
Analog Input Timing Signals—For information about the analog input timing signals available on Simultaneous MIO X Series devices, refer to the Analog Input Timing Signals section. © National Instruments 4-41 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 88: Analog Input Terminal Configuration
Chapter 4 Analog Input • AI FIFO—Simultaneous MIO X Series devices can perform both single and multiple A/D conversions of a fixed or infinite number of samples. A large first-in-first-out (FIFO) buffer holds data during A/D conversions to ensure that no data is lost. Simultaneous MIO X Series devices can handle multiple A/D conversion operations with DMA or programmed I/O.
Page 89: Working Voltage Range
±11 V. If any of these conditions are exceeded, the input voltage is clamped until the fault condition is removed. © National Instruments 4-43 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 90: Analog Input Data Acquisition Methods
Chapter 4 Analog Input Analog Input Data Acquisition Methods When performing analog input measurements, you either can perform software-timed or hardware-timed acquisitions. • Software-timed acquisitions—With a software-timed acquisition, software controls the rate of the acquisition. Software sends a separate command to the hardware to initiate each ADC conversion. In NI-DAQmx, software-timed acquisitions are referred to as having on-demand timing.
Page 91 Info Code ni.com/info daqhwtsp Note (NI USB-634x/635x/636x Devices) X Series USB devices do not support hardware-timed single point (HWTSP) operations. © National Instruments 4-45 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 92: Analog Input Triggering
Chapter 4 Analog Input Analog Input Triggering Analog input supports three different triggering actions: • Start trigger • Reference trigger • Pause trigger Refer to the AI Start Trigger Signal, AI Reference Trigger Signal, and AI Pause Trigger Signal sections for information about these triggers. An analog or digital trigger can initiate these actions.
Page 93: Types Of Signal Sources
Isolated devices require the user to provide a ground-reference terminal to which its input signals are referenced. © National Instruments 4-47 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 94: Differential Connections For Ground-Referenced Signal Sources
Chapter 4 Analog Input Differential Connections for Ground-Referenced Signal Sources Figure 4-26 shows how to connect a ground-referenced signal source to a channel on an Simultaneous MIO X Series device. Simultaneous X Series Device Instrumentation AI 0 + Amplifier Ground- Referenced Signal –...
Page 95: Differential Connections For Floating Signal Sources
You must reference the source to the respective channel ground. © National Instruments 4-49 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 96 Chapter 4 Analog Input DC-Coupled You can connect low source impedance and high source impedance DC-coupled sources: • Low Source Impedance—You must reference the source to AI GND. The easiest way to make this reference is to connect the positive side of the signal to the positive input of the instrumentation amplifier and connect the negative side of the signal to AI GND as well as to the negative input of the instrumentation amplifier, without using resistors.
Page 97: Field Wiring Considerations
Even though you are in DIFF mode, you must still reference the signal to the same ground level as the device reference. There are various methods of achieving this reference while maintaining a high © National Instruments 4-51 X Series User Manual...
Page 98: Analog Input Timing Signals
Chapter 4 Analog Input common-mode rejection ratio (CMRR). These methods are outlined in the Connecting Analog Input Signals section. AI GND is an AI common signal that routes directly to the ground connection point on the devices. You can use this signal if you need a general analog ground connection point to the device.
Page 99: Aggregate Versus Single Channel Sample Rates
The maximum single channel rate is the fastest you can acquire data on the device from a single or multiple channels and still achieve accurate results. © National Instruments 4-53 X Series User Manual...
Page 100: Ai Sample Clock Signal
Chapter 4 Analog Input The total aggregate determines the maximum bus bandwidth used by the device. The total aggregate sample rate is the product of the maximum sample rate for a single channel multiplied by the number of AI channels that the device support.
Page 101 AI Start Trigger to the first AI Sample Clock pulse. By default, this delay is set to two ticks of the AI Sample Clock Timebase signal. © National Instruments 4-55 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 102: Ai Sample Clock Timebase Signal
Chapter 4 Analog Input Figure 4-30 shows the relationship of AI Sample Clock to AI Start Trigger. AI Sample Clock Timebase AI Start Trigger AI Sample Clock Delay From Start Trigger Figure 4-30. AI Sample Clock and AI Start Trigger AI Sample Clock Timebase Signal You can route any of the following signals to be the AI Sample Clock Timebase (ai/SampleClockTimebase) signal:...
Page 103: Ai Hold Complete Event Signal
AI Start Trigger AI Sample Clock Figure 4-31. Simultaneous MIO X Series Retriggerable Analog Input © National Instruments 4-57 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 104 Chapter 4 Analog Input Note Waveform information from LabVIEW will not reflect the delay between triggers. They will be treated as a continuous acquisition with constant t0 and dt information. Some X Series devices internally transfer data in sample Note (NI USB-6356/6366 Devices) pairs, as opposed to single samples.
Page 105: Ai Reference Trigger Signal
KnowledgeBase document, Can a Pretriggered Acquisition be Continuous?, for more information. To access this KnowledgeBase, go to and enter the Info Code ni.com/info rdcanq © National Instruments 4-59 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 106 Chapter 4 Analog Input When the reference trigger occurs, the DAQ device continues to write samples to the buffer until the buffer contains the number of posttrigger samples desired. Figure 4-32 shows the final buffer. Reference Trigger Pretrigger Samples Posttrigger Samples Complete Buffer Figure 4-32.
Page 107: Ai Pause Trigger Signal
• PFI <0..15> • RTSI <0..7> • PXI_STAR • PXIe-DSTAR<A,B> • Counter n Internal Output © National Instruments 4-61 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 108: Getting Started With Ai Applications In Software
Chapter 4 Analog Input • Counter n Gate • AO Pause Trigger (ao/PauseTrigger) • DI Pause Trigger (di/PauseTrigger) • DO Pause Trigger (do/PauseTrigger) The source also can be one of several other internal signals on your DAQ device. Refer to Device Routing in MAX in the NI-DAQmx Help or the LabVIEW Help for more information.
Page 109 Where Can I Find NI-DAQmx Examples?, by going to ni.com/info entering the Info Code daqmxexp For additional examples, refer to zone.ni.com © National Instruments 4-63 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 110: Analog Output
DACs. It allows you to download the points of a waveform to your X Series device without host computer interaction. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 111: Ao Reference Selection
Chapter 5 Analog Output • AO Sample Clock—The AO Sample Clock signal reads a sample from the DAC FIFO and generates the AO voltage. • AO Reference Selection—The AO reference selection signal allows you to change the range of the analog outputs. AO Reference Selection AO reference selection allows you to set the analog output range.
Page 112: Minimizing Glitches On The Output Signal
While buffered operations are optimized for high throughput, HWTSP © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 113 Chapter 5 Analog Output operations are optimized for low latency and low jitter. In addition, HWTSP can notify software if it falls behind hardware. These features make HWTSP ideal for real time control applications. HWTSP operations, in conjunction with the wait for next sample clock function, provide tight synchronization between the software layer and the hardware layer.
Page 114: Analog Output Triggering
3. AO GND is the ground reference for AO <0..3>. Figure 5-2 shows how to make analog output connections to the device. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 115: Analog Output Timing Signals
Chapter 5 Analog Output Analog Output Channels Analog Output Channels AO 0 AO 2 Channel 0 Channel 2 V OUT V OUT Load Load – – AO GND AO GND Load V OUT Load V OUT AO 1 AO 3 Channel 1 Channel 3 X Series Device...
Page 116: Ao Start Trigger Signal
A pulse initiated by host software • PFI <0..15> • RTSI <0..7> • AI Start Trigger (ai/StartTrigger) • AI Reference Trigger (ai/ReferenceTrigger) © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 117: Using An Analog Source
Chapter 5 Analog Output • PXI_STAR • PXIe-DSTAR<A,B> • Counter n Internal Output • Change Detection Event • DI Start Trigger (di/StartTrigger) • DI Reference Trigger (di/ReferenceTrigger) • DO Start Trigger (do/StartTrigger) The source also can be one of several internal signals on your DAQ device. Refer to Device Routing in MAX in the NI-DAQmx Help or the LabVIEW Help for more information.
Page 118: Using A Digital Source
RTSI <0..7> • PXI_STAR • PXIe-DSTAR<A,B> • Counter n Internal Output • Counter n Gate • AI Pause Trigger (ai/PauseTrigger) © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 119: Using An Analog Source
Chapter 5 Analog Output • DI Pause Trigger (di/PauseTrigger) • DO Pause Trigger (do/PauseTrigger) The source also can be one of several other internal signals on your DAQ device. Refer to Device Routing in MAX in the NI-DAQmx Help or the LabVIEW Help for more information.
Page 120: Using An External Source
AO Start Trigger to the first AO Sample Clock pulse. By default, this delay is two ticks of AO Sample Clock Timebase. © National Instruments 5-11 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 121: Ao Sample Clock Timebase Signal
Chapter 5 Analog Output Figure 5-7 shows the relationship of AO Sample Clock to AO Start Trigger. AO Sample Clock Timebase AO Start Trigger AO Sample Clock Delay From Start Trigger Figure 5-7. AO Sample Clock and AO Start Trigger AO Sample Clock Timebase Signal The AO Sample Clock Timebase (ao/SampleClockTimebase) signal is divided down to provide a source for AO Sample Clock.
Page 122: Getting Started With Ao Applications In Software
Where Can I Find NI-DAQmx Examples?, by going to ni.com/info entering the Info Code daqmxexp For additional examples, refer to zone.ni.com © National Instruments 5-13 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 123: Digital I/O
Figure 6-1 shows the circuitry of one DIO line. Each DIO line is similar. The following sections provide information about the various parts of the DIO circuit. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 124: Digital Input Data Acquisition Methods
Chapter 6 Digital I/O DO Waveform Generation FIFO DO Sample Clock Static DO Buffer P0.x I/O Protection DO.x Direction Control Weak Pull-Down Static DI DI Waveform Filter Measurement FIFO DI Sample Clock DI Change Detection Figure 6-1. X Series Digital I/O Circuitry The DIO terminals are named P0.<0..31>...
Page 125: Hardware-Timed Acquisitions
New acquisitions will overwrite data in the FIFO before it can be transferred to host memory. The device generates © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 126: Digital Input Triggering
Chapter 6 Digital I/O an error in this case. With continuous operations, if the user program does not read data out of the PC buffer fast enough to keep up with the data transfer, the buffer could reach an overflow condition, causing an error to be generated.
Page 127: Digital Waveform Acquisition
DI Pause Trigger Signal Signals with an support digital filtering. Refer to the PFI Filters section of Chapter 8, PFI, for more information. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 128: Di Sample Clock Signal
Chapter 6 Digital I/O DI Sample Clock Signal The device uses the DI Sample Clock (di/SampleClock) signal to sample the Port 0 terminals and store the result in the DI waveform acquisition FIFO. You can specify an internal or external source for DI Sample Clock. You also can specify whether the measurement sample begins on the rising edge or falling edge of DI Sample Clock.
Page 129: Routing Di Sample Clock To An Output Terminal
You can route any of the following signals to be the DI Sample Clock Timebase (di/SampleClockTimebase) signal: • 100 MHz Timebase (default) • 20 MHz Timebase • 100 kHz Timebase © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 130: Di Start Trigger Signal
Chapter 6 Digital I/O • PXI_CLK10 • RTSI <0..7> • PFI <0..15> • PXI_STAR • PXIe-DSTAR<A,B> • Analog Comparison Event (an analog trigger) Refer to the Routing Table in MAX for all additional routable signals. DI Sample Clock Timebase is not available as an output on the I/O connector.
Page 131: Using A Digital Source
You also can specify whether the measurement acquisition begins on the rising edge or falling edge of DI Start Trigger. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 132: Using An Analog Source
Chapter 6 Digital I/O Using an Analog Source When you use an analog trigger source, the acquisition begins on the first rising or falling edge of the Analog Comparison Event signal. Routing DI Start Trigger to an Output Terminal You can route DI Start Trigger out to any PFI <0..15>, RTSI <0..7>, or PXIe-DSTARC terminal.
Page 133: Using A Digital Source
Help for more information. You also can specify whether the measurement acquisition stops on the rising or falling edge or falling edge of DI Reference Trigger. © National Instruments 6-11 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 134: Using An Analog Source
Chapter 6 Digital I/O Using an Analog Source When you use an analog trigger source, the acquisition stops on the first rising edge of the Analog Comparison Event signal. Routing DI Reference Trigger Signal to an Output Terminal You can route DI Reference Trigger out to any PFI <0..15>, RTSI <0..7>, PXI_Trig <0..7>, or PXIe-DSTARC terminal.
Page 135: Using A Digital Source
PXI_STAR, or PXIe-DSTARC terminal. Pause triggers are only sensitive to the level of the source, not the edge. Note © National Instruments 6-13 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 136: Digital Output Data Generation Methods
Chapter 6 Digital I/O Digital Output Data Generation Methods When performing a digital waveform operation, you either can perform software-timed or hardware-timed generations. Software-Timed Generations With a software-timed generation, software controls the rate at which data is generated. Software sends a separate command to the hardware to initiate each update.
Page 137 Use the NI-DAQmx DO channel property, UseOnlyOnBoardMemeory to enable or disable FIFO regeneration. © National Instruments 6-15 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 138: Digital Output Triggering
Chapter 6 Digital I/O Digital Output Triggering Digital output supports two different triggering actions: • Start trigger • Pause trigger An analog or digital trigger can initiate these actions. All X Series devices support digital triggering, but some do not support analog triggering. To find your device’s triggering options, refer to the specifications document for your device.
Page 139: Do Sample Clock Signal
Use one of the following external signals as the source of DO Sample Clock: • PFI <0..15> • RTSI <0..7> • PXI_STAR • PXIe-DSTAR<A,B> • Analog Comparison Event (an analog trigger) © National Instruments 6-17 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 140: Routing Do Sample Clock To An Output Terminal
Chapter 6 Digital I/O Routing DO Sample Clock to an Output Terminal You can route DO Sample Clock (as an active low signal) out to any PFI <0..15>, RTSI <0..7>, or PXIe-DSTARC terminal. Other Timing Requirements The DO timing engine on your device internally generates DO Sample Clock unless you select some external source.
Page 141: Do Start Trigger Signal
Figure 6-8 shows a retriggerable DO of four samples. DO Start Trigger DO Sample Clock Figure 6-8. Retriggerable DO © National Instruments 6-19 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 142: Using A Digital Source
Chapter 6 Digital I/O Using a Digital Source To use DO Start Trigger, specify a source and an edge. The source can be one of the following signals: • A pulse initiated by host software • PFI <0..15> • RTSI <0..7> •...
Page 143: Do Pause Trigger Signal
Figure 6-10. Pause Trigger Sample Clock Figure 6-10. DO Pause Trigger with Other Signal Source © National Instruments 6-21 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 144: Using A Digital Source
Chapter 6 Digital I/O Using a Digital Source To use DO Pause Trigger, specify a source and a polarity. The source can be one of the following signals: • PFI <0..15> • RTSI <0..7> • PXI_STAR • PXIe-DSTAR<A,B> • Counter n Internal Output •...
Page 145: I/O Protection
When using your X Series device to control an SCXI chassis, DIO lines 0, 1, 2, and 4 are used as communication lines and must be left to power-up in the default high-impedance state to avoid potential damage to these signals. © National Instruments 6-23 X Series User Manual...
Page 146: Di Change Detection
Chapter 6 Digital I/O DI Change Detection You can configure the DAQ device to detect changes on all 32 digital input lines (P0, P1, and P2) and all 16 PFI lines. Figure 6-11 shows a block diagram of the DIO change detection circuitry. Enable P0.0 Synch...
Page 147: Di Change Detection Applications
© National Instruments 6-25 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 148 Chapter 6 Digital I/O Table 6-1. Filters Pulse Width Guaranteed Pulse Width Guaranteed Filter Setting Filter Clock to Pass Filter to Not Pass Filter Short 12.5 MHz 160 ns 80 ns 10.24 μs 5.12 μs Medium 195.3125 kHz High 390.625 Hz 5.12 ms 2.56 ms None...
Page 149 Not Stable Digital Input P0.A Digital Input P0.B Filter Clock Filtered Input A Filtered Input B Figure 6-14. Case 2 © National Instruments 6-27 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 150: Watchdog Timer
Chapter 6 Digital I/O Figure 6-15 illustrates the difference between line and bus filtering. Digital Input P0.A Digital Input P0.B Filter Clock Filtered Input A Filtered Input B 2A With line filtering, filtered input A would ignore the glitch on digital input P0.B and transition after two filter clocks. 3A Filtered input A goes high when sampled high for two consecutive filter clocks and transitions on the next filter edge because digital input P0.B glitches.
Page 151: Connecting Digital I/O Signals
Caution specifications document for each X Series device, can damage the DAQ device and the computer. NI is not liable for any damage resulting from such signal connections. © National Instruments 6-29 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 152: Getting Started With Dio Applications In Software
Chapter 6 Digital I/O Getting Started with DIO Applications in Software You can use the X Series device in the following digital I/O applications: • Static digital input • Static digital output • Digital waveform generation • Digital waveform acquisition •...
Page 153 Each counter has a FIFO that can be used for buffered acquisition and generation. Each counter also contains an embedded counter (Embedded Ctrn) for use in what are traditionally two-counter measurements and © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 154: Counter Timing Engine
Chapter 7 Counters generations. The embedded counters cannot be programmed independent of the main counter; signals from the embedded counters are not routable. Counter Timing Engine Unlike analog input, analog output, digital input, and digital output, X Series counters do not have the ability to divide down a timebase to produce an internal counter sample clock.
Page 155: Counter Input Applications
(up or down), as described in the Controlling the Direction of Counting section. The counter values can be read on demand or with a sample clock. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 156: Single Point (On-Demand) Edge Counting
Chapter 7 Counters Refer to the following sections for more information about X Series edge counting options: • Single Point (On-Demand) Edge Counting • Buffered (Sample Clock) Edge Counting Single Point (On-Demand) Edge Counting With single point (on-demand) edge counting, the counter counts the number of edges on the Source input after the counter is armed.
Page 157: Buffered (Sample Clock) Edge Counting
Count up when the Counter 0 B input is high; count down when it is low For information about connecting counter signals, refer to the Default Counter/Timer Pinouts section. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 158: Pulse-Width Measurement
Chapter 7 Counters Pulse-Width Measurement In pulse-width measurements, the counter measures the width of a pulse on its Gate input signal. You can configure the counter to measure the width of high pulses or low pulses on the Gate signal. You can route an internal or external periodic clock signal (with a known period) to the Source input of the counter.
Page 159: Implicit Buffered Pulse-Width Measurement
Figure 7-6 shows an example of an implicit buffered pulse-width measurement. GATE SOURCE Counter Value Buffer Figure 7-6. Implicit Buffered Pulse-Width Measurement © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 160: Sample Clocked Buffered Pulse-Width Measurement
Chapter 7 Counters Sample Clocked Buffered Pulse-Width Measurement A Sample Clocked Buffered pulse-width measurement is similar to single pulse-width measurement, but buffered pulse-width measurement takes measurements over multiple pulses correlated to a sample clock. The counter counts the number of edges on the Source input while the Gate input remains active.
Page 161: Pulse Measurement
(H) and low (L) ticks of a pulse, as shown in Figure 7-8. Counter Armed Gate Source Latched Value 7 10 Figure 7-8. Single (On-Demand) Pulse Measurement © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 162: Implicit Buffered Pulse Measurement
Chapter 7 Counters Implicit Buffered Pulse Measurement In an implicit buffered pulse measurement, on each edge of the Gate signal, the counter stores the count in the FIFO. A DMA controller transfers the stored values to host memory. The counter begins counting when it is armed. The arm usually occurs between edges on the Gate input but the counting does not start until the desired edge.
Page 163: Hardware-Timed Single Point Pulse Measurement
When you read 10 points in a pulse measurement, you get an array of 10 pairs of high and low times. © National Instruments 7-11 X Series User Manual...
Page 164: Semi-Period Measurement
Chapter 7 Counters Also, pulse measurements support sample clock timing while semi-period measurements do not. Semi-Period Measurement In semi-period measurements, the counter measures a semi-period on its Gate input signal after the counter is armed. A semi-period is the time between any two consecutive edges on the Gate input.
Page 165: Frequency Measurement
(fk) to the Source of the counter. The known timebase can be an onboard timebase, such as 100 MHz Timebase, 20 MHz Timebase, or 100 kHz Timebase, or any other signal with a known rate. © National Instruments 7-13 X Series User Manual...
Page 166: High Frequency With Two Counters
Chapter 7 Counters You can configure the counter to measure one period of the gate signal. The frequency of fx is the inverse of the period. Figure 7-12 illustrates this method. Interval Measured Gate … … Source Single Period Period of fx = Measurement Frequency of fx = Figure 7-12.
Page 167: Large Range Of Frequencies With Two Counters
Figure 7-14. Assume this signal to measure has frequency fx. NI-DAQmx automatically configures Counter 0 to generate a single pulse that is the width of N periods of the source input signal. © National Instruments 7-15 X Series User Manual...
Page 168: Sample Clocked Buffered Frequency Measurement
Chapter 7 Counters Signal to Source Measure (fx) Counter 0 Signal of Known Source Frequency (fk) Counter 1 Gate 3 … N CTR_0_SOURCE (Signal to Measure) CTR_0_OUT Interval (CTR_1_GATE) to Measure CTR_1_SOURCE Figure 7-14. Large Range of Frequencies with Two Counters NI-DAQmx then routes the Counter 0 Internal Output signal to the gate of Counter 1.
Page 169 With sample clocked frequency measurements, ensure that the frequency to measure is twice as fast as the sample clock to prevent a measurement overflow. © National Instruments 7-17 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 170: Hardware-Timed Single Point Frequency Measurement
Chapter 7 Counters Hardware-Timed Single Point Frequency Measurement hardware-timed single point (HWTSP) frequency measurements can either be a single frequency measurement or an average between sample clocks. Use CI.Freq.EnableAveraging to set the behavior. For hardware-timed single point, the default is False. Refer to the Sample Clocked Buffered Frequency Measurement section for more information.
Page 171 --- - 1 – Note: Accuracy equations do not take clock stability into account. Refer to your device specifications for clock stability. © National Instruments 7-19 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 172 Chapter 7 Counters Which Method Is Best? This depends on the frequency to be measured, the rate at which you want to monitor the frequency and the accuracy you desire. Take for example, measuring a 50 kHz signal. Assuming that the measurement times for the sample clocked (with averaging) and two counter frequency measurements are configured the same, Table 7-3 summarizes the results.
Page 173 7-3. But if your signal ramped up to 5 MHz, then with a divide down of 50, your measurement time would be 0.01 ms, but your error would now be 0.001%. The error with a sample © National Instruments 7-21 X Series User Manual...
Page 174: Period Measurement
Chapter 7 Counters clocked frequency measurement is not dependent on the measured frequency so at 50 kHz and 5 MHz with a measurement time of 1 ms the error % will still be 0.001%. One of the disadvantages of a sample clocked frequency measurement is that the frequency to be measured must be at least twice the sample clock rate to ensure that a full period of the frequency to be measured occurs between sample clocks.
Page 175: Position Measurement
A, the decrement occurs on the falling edge of channel A. Ch A Ch B Counter Value Figure 7-18. X1 Encoding © National Instruments 7-23 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 176 Chapter 7 Counters • X2 Encoding—The same behavior holds for X2 encoding except the counter increments or decrements on each edge of channel A, depending on which channel leads the other. Each cycle results in two increments or decrements, as shown in Figure 7-19. Ch A Ch B Counter Value 5...
Page 177: Measurements Using Two Pulse Encoders
The value of the counter is sampled on each active edge of a sample clock. A DMA controller transfers the sampled values to host memory. The count values returned are the cumulative counts since the © National Instruments 7-25 X Series User Manual...
Page 178: Hardware-Timed Single Point Position Measurement
Chapter 7 Counters counter armed event; that is, the sample clock does not reset the counter. You can route the counter sample clock to the Gate input of the counter. You can configure the counter to sample on the rising or falling edge of the sample clock.
Page 179: Single Two-Signal Edge-Separation Measurement
Figure 7-24 shows an example of a single two-signal edge-separation measurement. Counter Armed Measured Interval GATE SOURCE Counter Value Latched Value Figure 7-24. Single Two-Signal Edge-Separation Measurement © National Instruments 7-27 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 180: Implicit Buffered Two-Signal Edge-Separation Measurement
Chapter 7 Counters Implicit Buffered Two-Signal Edge-Separation Measurement Implicit buffered and single two-signal edge-separation measurements are similar, but implicit buffered measurement measures multiple intervals. The counter counts the number of rising (or falling) edges on the Source input occurring between an active edge of the Gate signal and an active edge of the Aux signal.
Page 181: Hardware-Timed Single Point Two-Signal Separation Measurement
X Series USB devices do not support hardware-timed single point (HWTSP) operations. For information about connecting counter signals, refer to the Default Counter/Timer Pinouts section. © National Instruments 7-29 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 182: Counter Output Applications
Chapter 7 Counters Counter Output Applications The following sections list the various counter output applications available on X Series devices: • Simple Pulse Generation • Pulse Train Generation • Frequency Generation • Frequency Division • Pulse Generation for ETS Simple Pulse Generation Refer to the following sections for more information about the X Series simple pulse generation options: •...
Page 183: Single Pulse Generation With Start Trigger
Continuous Buffered Implicit Pulse Train Generation • Finite Buffered Sample Clocked Pulse Train Generation • Continuous Buffered Sample Clocked Pulse Train Generation © National Instruments 7-31 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 184: Finite Pulse Train Generation
Chapter 7 Counters Finite Pulse Train Generation This function generates a train of pulses with programmable frequency and duty cycle for a predetermined number of pulses. With X Series counters, the primary counter generates the specified pulse train and the embedded counter counts the pulses generated by the primary counter.
Page 185: Retriggerable Pulse Or Pulse Train Generation
4 3 2 1 0 2 1 0 GATE (Start Trigger) SOURCE Figure 7-31. Retriggerable Single Pulse Generation with Initial Delay on Retrigger © National Instruments 7-33 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 186: Continuous Pulse Train Generation
Chapter 7 Counters Figure 7-32 shows the same pulse train with CO.EnableInitalDelayOnRetrigger set to the default False. Counter 4 3 2 1 0 2 1 0 4 3 2 1 0 2 1 0 Load Values GATE (Start Trigger) SOURCE Figure 7-32.
Page 187: Buffered Pulse Train Generation
(pulse specifications) you write determines the number of pulses generated. All points are generated back to back to create a user defined pulse train. © National Instruments 7-35 X Series User Manual...
Page 188: Continuous Buffered Implicit Pulse Train Generation
Chapter 7 Counters Table 7-6 and Figure 7-34 detail a finite implicit generation of three samples. Table 7-6. Finite Implicit Buffered Pulse Train Generation Sample Idle Ticks Active Ticks Counter Load Values 1 0 1 0 2 1 0 3 1 0 1 0 1 0 SOURCE Counter Armed...
Page 189 © National Instruments 7-37 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 190: Continuous Buffered Sample Clocked Pulse Train Generation
Chapter 7 Counters With non-regeneration, old data will not be repeated. New data must be continually written to the buffer. If the program does not write new data to the buffer at a fast enough rate to keep up with the generation, the buffer will underflow and cause an error.
Page 191: Frequency Division
Continuous Pulse Train Generation section for detailed information. For information about connecting counter signals, refer to the Default Counter/Timer Pinouts section. © National Instruments 7-39 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 192: Pulse Generation For Ets
Chapter 7 Counters Pulse Generation for ETS In the equivalent time sampling (ETS) application, the counter produces a pulse on the output a specified delay after an active edge on Gate. After each active edge on Gate, the counter cumulatively increments the delay between the Gate and the pulse on the output by a specified amount.
Page 193: Counter Timing Signals
Table 7-8 lists how this terminal is used in various applications. © National Instruments 7-41 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 194: Routing A Signal To Counter N Source
Chapter 7 Counters Table 7-8. Counter Applications and Counter n Source Application Purpose of Source Terminal Pulse Generation Counter Timebase One Counter Time Measurements Counter Timebase Two Counter Time Measurements Input Terminal Non-Buffered Edge Counting Input Terminal Buffered Edge Counting Input Terminal Two-Edge Separation Counter Timebase...
Page 195: Counter N Gate Signal
PXIe-DSTARC terminal. All PFIs are set to high-impedance at startup. Counter n Aux Signal The Counter n Aux signal indicates the first edge in a two-signal edge-separation measurement. © National Instruments 7-43 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 196: Routing A Signal To Counter N Aux
Chapter 7 Counters Routing a Signal to Counter n Aux Each counter has independent input selectors for the Counter n Aux signal. Any of the following signals can be routed to the Counter n Aux input: • RTSI <0..7> • PFI <0..15>...
Page 197: Counter N Hw Arm Signal
You can specify an internal or external source for Counter n Sample Clock. You also can specify whether the measurement sample begins on the rising edge or falling edge of Counter n Sample Clock. © National Instruments 7-45 X Series User Manual...
Page 198: Using An Internal Source
Chapter 7 Counters If the DAQ device receives a Counter n Sample Clock when the FIFO is full, it reports an overflow error to the host software. Using an Internal Source To use Counter n Sample Clock with an internal source, specify the signal source and the polarity of the signal.
Page 199: Counter N Internal Output And Counter N Tc Signals
PCI Express, PXI Express, and USB Mass Termination devices. Refer to Table 7-10 for the default NI-DAQmx counter/timer outputs for USB Screw Terminal devices. © National Instruments 7-47 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 200 Chapter 7 Counters Table 7-9. X Series PCI Express/PXI Express/USB Mass Termination Device Default NI-DAQmx Counter/Timer Pins Counter/Timer Signal Default Connector 0 Pin Number (Name) CTR 0 SRC 37 (PFI 8) CTR 0 GATE 3 (PFI 9) CTR 0 AUX 45 (PFI 10) CTR 0 OUT 2 (PFI 12)
Page 201 78 (PFI 5) CTR 3 Z 79 (PFI 6) CTR 3 B 80 (PFI 7) FREQ OUT 93 (PFI 14) © National Instruments 7-49 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 202: Counter Triggering
Chapter 7 Counters You can use these defaults or select other sources and destinations for the counter/timer signals in NI-DAQmx. Refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help for more information about how to connect your signals for common counter measurements and generations.
Page 203: Other Counter Features
Prescaling can be used when the counter Source is an external signal. Prescaling is not available if the counter Source is one of the internal timebases (100MHzTimebase, 20MHzTimebase, or 100kHzTimebase). © National Instruments 7-51 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 204: Synchronization Modes
Chapter 7 Counters Synchronization Modes The 32-bit counter counts up or down synchronously with the Source signal. The Gate signal and other counter inputs are asynchronous to the Source signal, so X Series devices synchronize these signals before presenting them to the internal counter. Depending on how you configure your device, X Series devices use one of three synchronization methods: •...
Page 205: External Or Internal Source Less Than 25 Mhz
Figure 7-42. Source Synchronize Delayed Source Count Figure 7-42. External or Internal Source Less than 25 MHz © National Instruments 7-53 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 206: Pfi
Direction Static DI Control To Input Timing Weak Pull-Down Signal Selectors Filters Change Detection Figure 8-1. X Series PFI Circuitry © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 207: Using Pfi Terminals As Timing Input Signals
Chapter 8 When a terminal is used as a timing input or output signal, it is called PFI x (where x is an integer from 0 to 15). When a terminal is used as a static digital input or output, it is called P1.x or P2.x. On the I/O connector, each terminal is labeled PFI x/P1.x or PFI x/P2.x.
Page 208: Exporting Timing Output Signals Using Pfi Terminals
Watchdog timer expired pulse Signals with an are inverted before being driven to a terminal; that is, these signals Note are active low. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 209: Using Pfi Terminals As Static Digital I/Os
Chapter 8 Using PFI Terminals as Static Digital I/Os Each PFI can be individually configured as a static digital input or a static digital output. When a terminal is used as a static digital input or output, it is called P1.x or P2.x. On the I/O connector, each terminal is labeled PFI x/P1.x or PFI x/P2.x.
Page 210: Pfi Filters
The value of N depends on the filter setting; refer to Table 8-1. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 211 Chapter 8 Table 8-1. Filters N (Filter Clocks Pulse Width Pulse Width Needed to Guaranteed to Guaranteed to Filter Setting Filter Clock Pass Signal) Pass Filter Not Pass Filter None — — — — 90 ns 100 MHz 90 ns 80 ns (short) 5.12 μs...
Page 212: I/O Protection
4 are used as communication lines and must be left to power-up in the default high-impedance state to avoid potential damage to these signals. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 213: Digital Routing And Clock Generation
Clock PXIe_CLK100 20 MHz ÷ PXI_STAR Timebase 100 kHz ÷ PXIe-DSTAR<A, B> Timebase Figure 9-1. X Series Clock Routing Circuitry © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 214: 100 Mhz Timebase
Chapter 9 Digital Routing and Clock Generation 100 MHz Timebase The 100 MHz Timebase can be used as the timebase for all internal subsystems. The 100 MHz Timebase is generated from the following sources: • Onboard oscillator • External signal (by using the external reference clock) 20 MHz Timebase The 20 MHz Timebase can be used to generate many of the AI and AO timing signals.The 20 MHz Timebase also can be used as the Source input...
Page 215: 10 Mhz Reference Clock
The initiator device routes its 10 MHz reference clock to one of the RTSI <0..7> or PFI <0..15> signals. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 216: Usb Devices
• Share trigger signals between devices Many National Instruments DAQ, motion, vision, and CAN devices support RTSI. In a PCI Express system, the RTSI bus consists of the RTSI bus interface and a ribbon cable. The bus can route timing and trigger signals between several functions on as many as five DAQ, vision, motion, or CAN devices in the computer.
Page 217: Rtsi Connector Pinout
Figure 9-2. PCI Express X Series Device RTSI Pinout Table 9-1. RTSI Signals RTSI Bus Signal Terminal RTSI 7 RTSI 6 RTSI 5 RTSI 4 RTSI 3 © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 218: Using Rtsi As Outputs
Chapter 9 Digital Routing and Clock Generation Table 9-1. RTSI Signals (Continued) RTSI Bus Signal Terminal RTSI 2 RTSI 1 RTSI 0 Not Connected. Do not connect 1–18 signals to these terminals. D GND 19, 21, 23, 25, 27, 29, 31, 33 Using RTSI as Outputs RTSI <0..7>...
Page 219: Using Rtsi Terminals As Timing Input Signals
You can enable a programmable debouncing filter on each PFI, RTSI, or PXI_STAR signal. Refer to the PFI Filters section of Chapter 8, PFI, for more information. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 220: Pxi And Pxi Express Clock And Trigger Signals
Chapter 9 Digital Routing and Clock Generation PXI and PXI Express Clock and Trigger Signals PXI and PXI Express clock and trigger signals are only available on PXI Express devices. PXIe_CLK100 PXIe_CLK100 is a common low-skew 100 MHz reference clock for synchronization of multiple modules in a PXI Express measurement or control system.
Page 221: Pxi_Star Trigger
PXI Express system timing module and a peripheral device. Using multiple connections enable you to create more applications because of the increased routing capabilities. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 222 Chapter 9 Digital Routing and Clock Generation Table 9-2 describes the three differential star (DSTAR) lines and how they are used. Table 9-2. PXIe-DSTAR Line Descriptions Trigger Line Purpose PXIe_DSTARA Distributes high-speed, high-quality clock signals from the system timing slot to the peripherals (input).
Page 223: Bus Interface
– Analog input – Analog output – Counter 0 – Counter 1 – Counter 2 – Counter 3 © National Instruments 10-1 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 224: Usb Device Data Transfer Methods
Chapter 10 Bus Interface – Digital waveform generation (digital output) – Digital waveform acquisition (digital input) Each DMA controller channel contains a FIFO and independent processes for filling and emptying the FIFO. This allows the buses involved in the transfer to operate independently for maximum performance.
Page 225: Pxi Express Considerations
X Series PXI Express devices can be installed in any PXI Express slot in PXI Express chassis. PXI Express specifications are developed by the PXI System Alliance www.pxisa.org © National Instruments 10-3 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 226: Triggering
A falling edge is a high-to-low transition. Figure 11-1 shows a falling-edge trigger. Digital Trigger Falling Edge Initiates Acquisition Figure 11-1. Falling-Edge Trigger © National Instruments 11-1 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 227: Triggering With An Analog Source
Chapter 11 Triggering You also can program your DAQ device to perform an action in response to a trigger from a digital source. The action can affect the following: • Analog input acquisition • Analog output generation • Counter behavior •...
Page 228: Apfi <0,1> Terminals
Analog Input Channels on MIO X Series Devices Analog Input Channels on Simultaneous MIO X Series Devices section, depending on your device. © National Instruments 11-3 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 229: Analog Input Channels On Mio X Series Devices
Chapter 11 Triggering Analog Input Channels on MIO X Series Devices Select any analog input channel to drive the NI-PGIA. The NI-PGIA amplifies the signal as determined by the input ground-reference setting and the input range. The output of the NI-PGIA then drives the analog trigger detection circuit.
Page 230: Routing Analog Comparison Event To An Output Terminal
Level. Level Analog Comparison Event Figure 11-5. Above-Level Analog Triggering Mode © National Instruments 11-5 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 231 Chapter 11 Triggering Analog Edge Triggering with Hysteresis—Hysteresis adds a programmable voltage region above or below the trigger level that an input signal must pass through before the DAQ device recognizes a trigger condition, and is often used to reduce false triggering due to noise or jitter in the signal.
Page 232 Figure 11-8 demonstrates a trigger that asserts when the signal enters the window. Bottom Analog Comparison Event Figure 11-8. Analog Window Triggering Mode (Entering Window) © National Instruments 11-7 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 233: Analog Trigger Accuracy
Chapter 11 Triggering Analog Trigger Accuracy The analog trigger circuitry compares the voltage of the trigger source to the output of programmable trigger DACs. When you configure the level (or the high and low limits in window trigger mode), the device adjusts the output of the trigger DACs.
Page 234: Device-Specific Information
NI 6353/6363 • NI 6356/6366 • NI 6358/6368 To obtain documentation for devices not listed here, refer to ni.com/ manuals © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 235 Appendix A Device-Specific Information NI 6320 The following sections contain information about the NI PCIe-6320 device. NI 6320 Pinout Figure A-1 shows the pinout of the NI PCIe-6320 device. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information.
Page 236 For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 237 Appendix A Device-Specific Information NI 6320 Specifications Refer to the NI 632x Specifications for more detailed information about the NI 6320 device. NI 6320 Accessory and Cabling Options NI offers a variety of accessories and cables to use with your DAQ device. Refer to the Cables and Accessories section of Chapter 2,...
Page 238 For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 239 Appendix A Device-Specific Information 68 34 AI 0 (AI 0+) AI 8 (AI 0–) 67 33 AI GND AI 1 (AI 1+) 66 32 AI 9 (AI 1–) AI GND 65 31 AI 2 (AI 2+) AI 10 (AI 2–) 64 30 AI GND AI 3 (AI 3+)
Page 240 NI offers a variety of accessories and cables to use with your DAQ device. Refer to the Cables and Accessories section of Chapter 2, DAQ System Overview, for more information. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 241 Appendix A Device-Specific Information NI 6323/6343 The following sections contain information about the NI PCIe-6323, NI PCIe-6343, and NI USB-6343 devices. NI 6323/6343 Pinout Figure A-4 shows the pinout of the NI PCIe-6323/6343. The I/O signals appear on two 68-pin connectors. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3,...
Page 242 For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 243 Appendix A Device-Specific Information Figure A-5 shows the pinout of the NI USB-6343. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information. AI 4 (AI 4+) AI 20 (AI 20+) AI 0 (AI 0+) AI 16 (AI 16+) AI 12 (AI 4–)
Page 244 NI offers a variety of accessories and cables to use with your DAQ device. Refer to the Cables and Accessories section of Chapter 2, DAQ System Overview, for more information. © National Instruments A-11 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 245 Appendix A Device-Specific Information NI 6351/6361 The following sections contain information about the NI PCIe 6351, NI USB-6351 Screw Terminal, NI PCIe/PXIe-6361, and NI USB-6361 (Screw Terminal and Mass Termination) devices. NI 6351/6361 Pinout Figure A-6 shows the pinout of the NI PCIe-6351 and NI PCIe/PXIe-6361. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions...
Page 246 Pins, for a list of the default NI-DAQmx counter/timer pins for this device. For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments A-13 X Series User Manual...
Page 247 Appendix A Device-Specific Information Figure A-8 shows the pinout of the NI USB-6361 Mass Termination. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information. 68 34 AI 0 (AI 0+) AI 8 (AI 0–) 67 33 AI GND...
Page 248 NI offers a variety of accessories and cables to use with your DAQ device. Refer to the Cables and Accessories section of Chapter 2, DAQ System Overview, for more information. © National Instruments A-15 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 249 Appendix A Device-Specific Information NI 6353/6363 The following sections contain information about the NI PCIe-6353, NI USB-6353 Screw Terminal, NI PCIe/PXIe-6363, NI USB-6363 Mass Termination, and NI USB-6363 Screw Terminal devices. NI 6353/6363 Pinout Figure A-9 shows the pinout of the NI PCIe-6353 and NI PCIe/PXIe-6363. The I/O signals appear on two 68-pin connectors.
Page 250 Pins, for a list of the default NI-DAQmx counter/timer pins for this device. For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments A-17 X Series User Manual...
Page 251 Appendix A Device-Specific Information Figure A-10 shows the pinout of the NI USB-6363 Mass Termination. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information. AI 24 (AI 16–) AI 0 (AI 0+) 68 34 AI 8 (AI 0–)
Page 252 Pins, for a list of the default NI-DAQmx counter/timer pins for this device. For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments A-19 X Series User Manual...
Page 253 Appendix A Device-Specific Information Figure A-11 shows the pinout of the NI USB-6353/6363 Screw Terminal. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information. AI 4 (AI 4+) AI 20 (AI 20+) AI 0 (AI 0+) AI 16 (AI 16+)
Page 254 NI offers a variety of accessories and cables to use with your DAQ device. Refer to the Cables and Accessories section of Chapter 2, DAQ System Overview, for more information. © National Instruments A-21 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 255 Appendix A Device-Specific Information NI 6356/6366 The following sections contain information about the NI PXIe-6356, NI USB-6356 Screw Terminal, NI PXIe-6366, NI USB-6366 Mass Termination, and NI USB-6366 Screw Terminal devices. NI 6356/6366 Pinout Figure A-12 shows the pinout of the NI PXIe-6356/6366. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3,...
Page 256 Pins, for a list of the default NI-DAQmx counter/timer pins for this device. For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments A-23 X Series User Manual...
Page 257 Appendix A Device-Specific Information Figure A-13 shows the pinout of the NI USB-6366 Mass Termination. For a detailed description of each signal, refer to the I/O Connector Signal Descriptions section of Chapter 3, Connector and LED Information. 68 34 AI 0+ AI 0–...
Page 258 Pins, for a list of the default NI-DAQmx counter/timer pins for this device. For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help. © National Instruments A-25 X Series User Manual...
Page 259 Appendix A Device-Specific Information NI 6356/6366 Specifications Refer to the NI 6356/6358 Specifications for more detailed information about the NI 6356 device. Refer to the NI 6366/6368 Specifications for more detailed information about the NI 6366 device. NI 6356/6366 Accessory and Cabling Options NI offers a variety of accessories and cables to use with your DAQ device.
Page 260 AI 8– 34 68 AI 8+ NC = No Connect NC = No Connect Figure A-15. NI PXIe-6358/6368 Pinout © National Instruments A-27 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 261 Appendix A Device-Specific Information Note Refer to Table 7-9, X Series PCI Express/PXI Express/USB Mass Termination Device Default NI-DAQmx Counter/Timer Pins, for a list of the default NI-DAQmx counter/timer pins for this device. For more information about default NI-DAQmx counter inputs, refer to Connecting Counter Signals in the NI-DAQmx Help or the LabVIEW Help.
Page 262 There are various methods of achieving this reference while maintaining a high © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 263 Appendix B Troubleshooting common-mode rejection ratio (CMRR). These methods are outlined in the Connecting Analog Input Signals section of Chapter 4, Analog Input. AI GND is an AI common signal that routes directly to the ground connection point on the devices. You can use this signal if you need a general analog ground connection point to the device.
Page 264 How do I connect counter signals to my X Series device? Default Counter/Timer Pinouts section of Chapter 7, Counters, has information about counter signal connections. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 265 Technical Support and Professional Services Log in to your National Instruments User Profile to get ni.com personalized access to your services. Visit the following sections of for technical support and professional services: ni.com • Support—Technical support at includes the ni.com/support following resources: –...
Page 266 Appendix C Technical Support and Professional Services • System Integration—If you have time constraints, limited in-house technical resources, or other project challenges, National Instruments Alliance Partner members can help. To learn more, call your local NI office or visit ni.com/alliance •...
Page 267 > Greater than. ≤ Less than or equal to. ≥ Greater than or equal to. Per. ° Degree. Ω Ohm. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 268 Glossary Amperes—the unit of electric current. Analog-to-Digital. Most often used as A/D converter. Alternating current. accuracy A measure of the capability of an instrument or sensor to faithfully indicate the value of the measured signal. This term is not related to resolution; however, the accuracy level can never be better than the resolution of the instrument.
Page 269 A precise, traceable signal source used to calibrate instruments. cascading Process of extending the counting range of a counter chip by connecting to the next higher counter. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 270 Glossary channel Pin or wire lead to which you apply or from which you read the analog or digital signal. Analog signals can be single-ended or differential. For digital signals, you group channels to form ports. Ports usually consist of either four or eight digital channels.
Page 271 Decibel—The unit for expressing a logarithmic measure of the ratio of two signal levels: dB = 20log10 V1/V2, for signals in volts. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 272 Glossary Direct current—although the term speaks of current, many different types of DC measurements are made, including DC Voltage, DC current, and DC power. device An electronic board that performs general analog or digital I/O functions on one or multiple channels, connected to a PC through a bus or I/O port, such as PCI, PXI, Ethernet, USB, or serial.
Page 273 Also called non-referenced signal sources. Some common examples of floating signal sources are batteries, transformers, and thermocouples. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 274 Glossary frequency The number of alternating signals that occur per unit time. Feet. function 1. A built-in execution element, comparable to an operator, function, or statement in a conventional language. 2. A set of software instructions executed by a single line of code that may have input and/or output parameters and returns a value when executed.
Page 275 DAQ devices, such as the X Series multifunction I/O (MIO) devices, SCXI signal conditioning modules, and switch modules. © National Instruments X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 276 Glossary Megahertz—A unit of frequency; 1 MHz = 10 Hz = 1,000,000 Hz. Multifunction I/O—DAQ module. Designates a family of data acquisition products that have multiple analog input channels, digital I/O channels, timing, and optionally, analog output channels. An MIO product can be considered a miniature mixed signal tester, due to its broad range of signal types and flexibility.
Page 277 The period of a signal, most often measured from one zero crossing to the next zero crossing of the same slope. The period of a signal is the reciprocal of its frequency (in Hz). Period is designated by the symbol T. © National Instruments G-11 X Series User Manual...
Page 278 Glossary Programmable Function Interface. PGIA Programmable Gain Instrumentation Amplifier. physical channel See channel. Plug and Play devices A specification prepared by Microsoft, Intel, and other PC-related companies that result in PCs with plug-in devices that can be fully configured in software, without jumpers or switches on the devices. posttriggering The technique used on a DAQ device to acquire a programmed number of samples after trigger conditions are met.
Page 279 Also called a grounded measurement system. RTSI bus Real-Time System Integration bus—The National Instruments timing bus that connects DAQ devices directly, by means of connectors on top of the devices, for precise synchronization of functions.
Page 280 Glossary signal conditioning 1. Electronic equipment that makes transducer or other signals suitable in level and range to be transmitted over a distance, or to interface with voltage input instruments. 2. The manipulation of signals to prepare them for digitizing. signal source A generic term for any instrument in the family of signal generators.
Page 281 Transistor-Transistor Logic—A digital circuit composed of bipolar transistors wired in a certain manner. A typical medium-speed digital technology. Nominal TTL logic levels are 0 and 5 V. © National Instruments G-15 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 282 Glossary Universal Serial Bus—A 480 Mbit/s serial bus with up to 12-Mbps bandwidth for connecting computers to keyboards, printers, and other peripheral devices. USB 2.0 retains compatibility with the original USB specification. Common-mode voltage. Ground loop voltage. Volts, input high. Volts, input low.
Page 283 Simultaneous MIO X Series devices, MIO X Series devices, 4-30 4-45 Simultaneous MIO X Series devices, 4-56 digital waveform, 6-5 © National Instruments Corporation X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 284 Index AI Start Trigger signal MIO X Series devices, 4-1 MIO X Series devices, 4-35 AI Convert Clock, 4-31 Simultaneous MIO X Series devices, 4-57 AI Convert Clock Timebase, 4-34 ai/ConvertClock, 4-31 AI Hold Complete Event, 4-34 AI Pause Trigger, 4-38 ai/ConvertClockTimebase, 4-34 ai/HoldCompleteEvent AI Reference Trigger, 4-37...
Page 285 AO Sample Clock, 5-2 NI 6351/6361, A-15 AO Sample Clock signal, 5-10 NI 6353/6363, A-21 AO Sample Clock Timebase signal, 5-12 © National Instruments Corporation X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 286 Index NI 6356/6366, A-26 signal rejection considerations NI 6358/6368, A-28 differential ground-referenced signals (Simultaneous MIO X X Series devices, 2-4 Series devices), 4-48 calibration, 1-2 configuring AI ground-reference settings in circuitry, 2-3 software calibration certificate (NI resources), C-2 MIO X Series devices, 4-6 cascading counters, 7-51 Simultaneous MIO X Series devices, 4-62 Change Detection Event signal, 6-24...
Page 287 7-3 Counter n Gate signal, 7-43 crosstalk when sampling multiple channels, Counter n HW Arm signal, 7-45 © National Instruments Corporation X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 288 Index CtrnSampleClock, 7-45 pinouts, 1-8 custom cabling, 2-7 self-calibration, 1-2 specifications, 1-8 DI change detection, 6-24 DI Sample Clock signal, 6-6 DACs, 5-1 di/SampleClock, 6-6 diagnostic tools (NI resources), C-1 hardware, 2-1 DIFF connections system, 2-1 using with floating signal sources (MIO X DAQ-6202, 2-2 Series devices), 4-15 DAQ-STC3, 2-2...
Page 289 Simultaneous MIO X Series devices, 4-42 conventions used in manual, xvii filters NI resources, C-1 PFI, 8-5 related documentation, xviii PXI_STAR, 9-9 RTSI, 9-7 © National Instruments Corporation X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 290 Index floating signal sources single pulse, 7-30 connecting single pulse with start trigger, 7-31 MIO X Series devices, 4-13 software-timed, 5-3, 6-14 description getting started, 1-1 AI applications in software MIO X Series devices, 4-13 using in differential mode MIO X Series devices, 4-40 MIO X Series devices, 4-15 AO applications in software, 5-13 using in NRSE mode...
Page 291 7-18 NI USB-6356/6366 pinout, A-25 frequency, 7-13 I/O protection, 6-23, 8-7 implicit buffered pulse-width, 7-7 implicit buffered semi-period, 7-12 © National Instruments Corporation X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 292 A-26 MIO X Series devices, 4-2 cabling options, A-26 PXI Express pinout, A-22 specifications, A-26 USB pinout, A-25 National Instruments support and services, NI 6358/6368, A-27 accessory options, A-28 .NET languages documentation, xx cabling options, A-28 NI 6320, A-2...
Page 293 NI PXIe-6356/6366, A-22 order of channels for scanning (MIO X Series NI PXIe-6358/6368, A-27 devices), 4-7 NI USB-6343, A-10 © National Instruments Corporation I-11 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 294 Index NI USB-6351/6361, A-13, A-14, A-18, PXIe_SYNC100, 9-8 A-24 PXIe-DSTAR<A..C>, 9-9 NI USB-6353/6363, A-20 PXI_CLK10, 9-8 NI USB-6356/6366, A-25 PXI_STAR RTSI connector, 3-5, 9-5 filters, 9-9 pins, default, 7-47 trigger, 9-9 position measurement, 7-23 PXIe_CLK100, 9-8 buffered, 7-25 PXIe_SYNC100, 9-8 power PXIe-DSTAR<A..C>, 9-9 +5 V, 3-3...
Page 295 MIO X Series devices, 4-24 analog input Simultaneous MIO X Series devices, Simultaneous MIO X Series devices, 4-52 4-46 © National Instruments Corporation I-13 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 296 Index analog output, 5-6 semi-period measurement, 7-12 AO Pause Trigger, 5-8 two-signal edge-separation measurement, 7-27 AO Sample Clock, 5-10 single-ended connections AO Sample Clock Timebase, 5-12 for floating signal sources AO Start Trigger, 5-7 MIO X Series devices, 4-19 Change Detection Event, 6-24 RSE configuration connecting analog input MIO X Series devices, 4-19...
Page 297 USB cable strain relief, 1-7 start, 7-50 wall mounting, 1-5 triggering, 11-1 analog accuracy, 11-8 analog actions, 11-4 © National Instruments Corporation I-15 X Series User Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Page 298 Index using low impedance sources (MIO X Series X Series devices), 4-7 accessories and cables, 1-8 PFI terminals accessory options, 2-4 as static digital I/Os, 8-4 cabling options, 2-4 as timing input signals, 8-2 information, A-1 to export timing output signals, 8-3 pinouts, 1-8 RTSI specifications, 1-8, xxi...

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National Instruments DAQ X Series User Manual

About this Manual

Chapter 1 Getting Started

Chapter 2 DAQ System Overview

Chapter 3 Connector and LED Information

Chapter 4 Analog Input

Chapter 5 Analog Output

Chapter 6 Digital I/O

Chapter 7 Counters

Chapter 8 PFI

Chapter 9 Digital Routing and Clock Generation

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Summary of Contents for National Instruments DAQ X Series