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Data Translation DT9857 User Manual

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UM-25656-N
DT9857 and DT9857E
User's Manual

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Summary of Contents for Data Translation DT9857

  • Page 1 Title Page UM-25656-N DT9857 and DT9857E User’s Manual...
  • Page 2 Copyright Page Trademark and Copyright Information Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation. Refer to the Copyrights & Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.
  • Page 3 Changes or modifications to this equipment not expressly approved by Data Translation could void your authority to operate the equipment under Part 15 of the FCC Rules.

  • Page 5: Table Of Contents

    Configuring the DT9857 Series Device Driver ........
  • Page 6 Contents Continuous Edge-to-Edge Measurement ........57 Pulse Output .
  • Page 7 Synchronizing Acquisition on Multiple Modules ....... . . 105 Synchronizing the Analog Input Subsystems of Multiple DT9857 Modules ..105 Synchronizing the Analog Input and/or Analog Output Subsystems of Multiple DT9857E Modules .
  • Page 8 Sync Bus Connector on the DT9857 Module........
  • Page 9 LED Status Indicators on the DT9857 Module ....... . 176...
  • Page 10 Contents...

  • Page 11: About This Manual

    About this Manual The first part of this manual describes how to install and set up your DT9857 or DT9857E module and device driver, and verify that your module is working properly. The second part of this manual describes the features of the DT9857 and DT9857E modules, the capabilities of the DT9857 Device Driver, and how to program the DT9857 or DT9857E module using the DT-Open Layers for .NET Class Library...

  • Page 12: Conventions Used In This Manual

    Refer to the following documents for more information on using the DT9857 module: • Benefits of the Universal Serial Bus for Data Acquisition. This white paper describes why USB is an attractive alternative for data acquisition. It is available on the Data Translation web site (www.mccdaq.com).

  • Page 13: Where To Get Help

    About this Manual Where To Get Help Should you run into problems installing or using a DT9857 or DT9857E module, the Technical Support Department is available to provide technical assistance. Refer to Chapter 7 for more information. If you are outside the United States or Canada, call your local distributor, whose...
  • Page 14 About this Manual...

  • Page 15: Chapter 1: Overview

    Overview Hardware Features............Supported Software .

  • Page 16: Hardware Features

    Note that OEM versions of the modules are also available. The OEM versions of the modules do not include an enclosure or an external power supply. The key features that are common to both the DT9857 and DT9857E modules are as follows: • Simultaneous analog input and waveform analog output operations •...
  • Page 17 Overview  Support for IEPE (Integrated Electronic Piezoelectric) inputs, including use of a 4 mA current source with 24 V compliance voltage for AC or DC coupling.  In continuous scan mode, supports a start trigger for acquiring pre-trigger samples and a reference trigger for acquiring post-trigger samples.
  • Page 18 • Sync Bus for connecting and synchronizing multiple modules. • Locking USB connector. • External power supply. The key differences between the DT9857 and DT9857E modules are listed in Table Table 1: Key Differences Between the DT9857 and the DT9857E...

  • Page 19: Supported Software

    The following software is available for use with the DT9857 and DT9857E modules and is included on the Data Acquisition OMNI CD: • DT9857 Series Device Driver – The DT9857 Series Device Driver allows you to use a DT9857 or DT9857E module with any of the supported software packages or utilities.
  • Page 20 • DT-Open Layers for .NET Class Library – Use this class library if you want to use Visual C# or Visual Basic for .NET to develop your own application software for a DT9857 or DT9857E modules using Visual Studio 2003-2012; the class library complies with the...
  • Page 21 • DataAcq SDK – Use the Data Acq SDK if you want to use Visual Studio 6.0 and Microsoft C or C++ to develop your own application software for a DT9857 or DT9857E module using Windows Vista, Windows 7, Windows 8, or Windows 10; the DataAcq SDK complies with the DT-Open Layers standard.

  • Page 22: Supported Accessories

    The following optional accessories are available for a DT9857 or DT9857E module: • STP25 screw terminal panel – A screw terminal panel that connects to the Digital connector on the DT9857 or DT9857E module using the 25-pin, 1.5-meter, EP403 cable that is included with the STP25 screw terminal panel.
  • Page 23 Note: The EP386 is not used with the DT9857E and DT9857E-OEM modules. • EP402 Rack Mount Kit – The EP402 Rack Mount Kit allows you to mount the DT9857 or DT9857E in a 19-inch rack. The kit includes mounting clips, screws, and instructions. The...

  • Page 24: Getting Started Procedure

    The flow diagram shown in Figure 5 illustrates the steps needed to get started using a DT9857 or DT9857E module. This diagram is repeated in each Getting Started chapter; the shaded area in the diagram shows you where you are in the getting started procedure.

  • Page 25: Getting Started Procedure

    Part 1: Getting Started...

  • Page 27: Chapter 2: Setting Up And Installing The Module

    Computer..........Configuring the DT9857 Series Device Driver...
  • Page 28 Chapter 2 Set Up and Install the Module (this chapter) Wire Signals (see Chapter 3 starting on page Verify the Operation of the Module (see Chapter 4 starting on page...

  • Page 29: Unpacking

    • USB cable (EP365) • Data Acquisition OMNI CD-ROM If an item is missing or damaged, contact Data Translation. If you are in the United States, call the Customer Service Department at (508) 946-5100. An application engineer will guide you through the appropriate steps for replacing missing or damaged items.

  • Page 30: System Requirements

    Chapter 2 System Requirements For reliable operation, ensure that your computer meets the following system requirements: • Processor: Pentium 4/M or equivalent • RAM: 1 GB • Screen Resolution: 1024 x 768 pixels • Operating System: Windows 10, Windows 8, Windows 7, Windows Vista (32- and 64-bit) •...

  • Page 31: Applying Power To The Module

    Setting Up and Installing the Module Applying Power to the Module The DT9857 module works with a +5 VDC power supply. The DT9857E module works with a +4.75 VDC to +28 VDC power supply. The EP361 +5 V power supply and cable is shipped with the standard version of the DT9857 and DT9857E modules.
  • Page 32 Chapter 2 DT9857 Module Rear Panel EP361 +5 V Power Supply Connect the EP361 Power Supply to the Module and to the Wall Outlet Figure 7: Attaching an External Power Supply to the DT9857 Module...

  • Page 33: Applying Power To The Dt9857E Module

    Setting Up and Installing the Module Applying Power to the DT9857E Module To apply power to the DT9857E module, do the following: 1. Connect the EP361 power supply to the DIN power connector on the DT9857E module, as shown in Figure 8, or connect your own 4.75 VDC to 28 VDC power supply to the 3-position power terminal block.

  • Page 34: Attaching Modules To The Computer

    Connecting Directly to the USB Ports To connect a DT9857 or DT9857E module directly to a USB port on your computer, do the following: 1. Make sure that you have attached an external power supply to the module.

  • Page 35: Connecting To An Expansion Hub

    Click Install this driver software anyway. Note: Windows 7, Windows 8, and Windows 10 find the device automatically. 5. Repeat these steps to attach another DT9857 or DT9857E module to the host computer, if desired. Note: Once you have applied external power to the DT9857 or DT9857E module and connected your module to the host computer, the Power LED on the module turns solid green.
  • Page 36 USB Cables Module Host Computer USB Cable USB Cable Power Supply Expansion Hubs for Hub Power Supply for Hub DT9857 or DT9857 or DT9857E DT9857E Module Module USB Cables Figure 10: Attaching Multiple DT9857 or DT9857E Modules Using Expansion Hubs...
  • Page 37 This will also ensure that a reverse power supply will not cause any damage. Once you have applied external power to the DT9857 or DT9857E module and connected your module to the host computer, the Power LED on the module turns solid green. In addition,...

  • Page 38: Configuring The Dt9857 Series Device Driver

    Windows 7, Windows 8, Windows 10, and Vista (64-bit) C:\Windows\SysWOW64\Dtolcpl.cpl To configure the device driver for a DT9857 or DT9857E module, do the following: 1. If you have not already done so, power up the host computer and all peripherals.
  • Page 39 Setting Up and Installing the Module Power LED Figure 11: Power LED on the Front Panel of the DT9857E Module 9. If you are using multiple DT9857E modules connected together using the Sync Bus, the first and last module in the chain must be terminated with a 100  resistor. Check the Sync Bus Termination checkbox to enable the termination resistor, or uncheck the Sync Bus Termination checkbox to disable the termination resistor for the selected module.
  • Page 40 Chapter 2...

  • Page 41: Chapter 3: Wiring Signals

    Wiring Signals Preparing to Wire Signals ............Connecting Analog Input Signals .
  • Page 42 Chapter 3 Set Up and Install the Module (see Chapter 2 starting on page Wire Signals (this chapter) Verify the Operation of the Module (see Chapter 4 starting on page...

  • Page 43: Preparing To Wire Signals

    This section provides recommendations and information about wiring signals to a DT9857 or DT9857E module. Wiring Recommendations Keep the following recommendations in mind when wiring signals to a DT9857 or DT9857E module: • Follow standard ESD procedures when wiring signals to the module.
  • Page 44 Analog Inputs 0 to 7 DT9857 Module Rear Panel Digital Connector Tachometer Sync Bus Chassis Power (Digital I/O, External Trigger, C/T) Input Connector Connector Ground Stud Connector Figure 12: Connectors on the Front and Rear Panels of the DT9857 Module...
  • Page 45 Wiring Signals IEPE Inputs Analog Inputs 8 to 15 DT9857E Module Front Panel IEPE Inputs Analog Outputs 0 and 1 Analog Inputs 0 to 7 DT9857E Module Rear Panel Digital Connector External Sync Bus Power (Digital I/O, Tachometer, C/T) Trigger Input Connectors Connector Connectors...
  • Page 46 Figure 15: Connecting the STP25 to the DT9857 or DT9857E Module The STP25 contains one 25-pin connector and a screw terminal block. The 25-pin connector provides access to the signals from the Digital connector on the DT9857 and DT9857E modules.
  • Page 47 *Currently, the event output function is disabled and the output is driven low. **For the DT9857, pin 11 is the external trigger input and the tachometer input is a BNC connector on the module. For the DT9857E, pin 11 is the tachometer input and the external trigger input is a BNC connector on the module.

  • Page 48: Connecting Analog Input Signals

    16 analog input signals (or IEPE sensors) to the BNC connectors on the module. Internally, these signals are connected in single-ended mode. The DT9857 and DT9857E modules support an input signal range of ±10 V (using a gain of 1) or ±1 V (using a gain of 10).

  • Page 49: Connecting Analog Output Signals

    Wiring Signals Connecting Analog Output Signals The DT9857 and DT9857E modules provide up to two analog output channels. The output channels have an output range of ±10 V. Figure 18 shows how to connect an analog output signal to a DT9857 or DT9857E module.

  • Page 50: Connecting A Tachometer Input Signal

    Chapter 3 Connecting a Tachometer Input Signal You can connect a ±30 V tachometer input signal to the DT9857 or DT9857E module. On the DT9857, you connect the tachometer to a BNC connector, as shown in Figure 19. On the...

  • Page 51: Connecting Digital Input Signals

    Refer to Figure 16 on page 47 for the screw terminal assignments of the STP25 screw terminal panel. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Digital Input 1 Digital Input 0 TTL Inputs Figure 21: Connecting Digital Inputs...

  • Page 52: Connecting Digital Output Signals

    STP25 screw terminal panel. 1 Out = LED On STP25 From   Digital Out 0 DT9857 DT9857E Digital Ground The output current is determined using the following equation: Voltage Out Voltage – Current ---------------------------------------------------------------------...

  • Page 53: Connecting Counter/Timer Signals

    • Continuous edge-to-edge measurement • Pulse output (continuous, one-shot, and repetitive one-shot) The C/T signals are available through the Digital connector on the DT9857 and DT9857E modules. You can access these signals using the STP25 screw terminal panel, described on...

  • Page 54: Up/Down Counting

    STP25 screw terminal panel to perform an event counting operation on C/T 0 without using a gate. The counter counts the number of rising edges that occur on the Counter 0 Clock input. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Signal Source...

  • Page 55: Period/Pulse Width Measurement

    (high or low) in software. The pulse width is the percentage of the total pulse period that is active. Refer to page 94 for more information about pulse periods and pulse widths. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Signal Source Counter 0 Clock Figure 26: Connecting Counter/Timer Signals...

  • Page 56: Edge-To-Edge Measurement

    You specify the start edge and the stop edge in software. Refer to page 96 for more information on edge-to-edge measurement mode. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Signal Source 0 Counter 0 Clock Signal Counter 0 Gate...

  • Page 57: Continuous Edge-To-Edge Measurement

    You specify the start edge in software. Refer to page 96 for more information on continuous edge-to-edge measurement mode. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Signal Source 0 Counter 0 Clock Figure 28: Connecting Counter/Timer Signals for a Continuous...

  • Page 58: Pulse Output

    0; in this example, an external gate is used. Refer to page 97 through page 98 more information about pulse output operations. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Counter 0 Out Heater Controller Counter 0 Gate...

  • Page 59: Connecting Signals For Measure Counter Operations

    Wiring Signals Connecting Signals for Measure Counter Operations The DT9857 and DT9857E modules provide two measure counters (C/T 1 and 2) that you can use to measure the frequency, period, or pulse width of a single signal or the time period between two signals and return the value in the analog input stream.
  • Page 60 Refer to page 99 for more information on measure counters. STP25 (Connected to the DT9857 or DT9857E) Digital Ground Signal Source 0 Counter 0 Clock...

  • Page 61: Chapter 4: Verifying The Operation Of A Module

    Verifying the Operation of a Module Select the Device ............. . Acquire Data from an Analog Output Channel.
  • Page 62 QuickDAQ allows you to acquire and analyze data from all Data Translation USB and Ethernet devices, except the DT9841 Series, DT9817, DT9835, and DT9853/54. This chapter describes how to verify the operation of a DT9857 or DT9857E module using the QuickDAQ base version.

  • Page 63: Select The Device

    To get started with your DT9857 or DT9857E module and the QuickDAQ application, follow these steps: 1. Connect the DT9857 or DT9857E module to the USB port of your computer, and connect your sensors to the module. 2. Start the QuickDAQ application.
  • Page 64 Chapter 4...

  • Page 65: Acquire Data From An Analog Output Channel

    In this example, a 10 V sine wave is output on analog output channel 0 of a DT9857-8 module. The analog output channel is connected to analog input channel 0 on the DT9857-8 module.

  • Page 66: Configure The Analog Input Channel

    Chapter 4 2. Select the Enable checkbox to enable the analog output channel on the module. 3. For the Waveform type, select Fixed. 4. For Peak Voltage, enter 10 to output a ±10 V signal. 5. For Offset, enter 0. 6.
  • Page 67 Verifying the Operation of a Module 4. Under the Channel Name column, leave the default channel name as Ain 0. 5. Under the Range column, select the input range for analog input channel. In this example, ±10 V is used. 6.

  • Page 68: Configure The Recording Settings

    Chapter 4 Configure the Recording Settings For this example, configure the recording settings as follows: 1. Click the Recording tab of the Acquisition Config window. 2. For Filename generation, use the default Filename option. 3. For Filename, use the default name for the data file. 4.

  • Page 69: Configure The Acquisition Settings

    Verifying the Operation of a Module Configure the Acquisition Settings For this example, configure the acquisition settings as follows: 1. Click the Acquisition tab of the Acquisition Config window. 2. For the Per Channel Sampling Frequency text box, enter 10000. The sampling rate, sample interval, and number of scans are displayed.

  • Page 70: Start The Operation

    Chapter 4 Start the Operation Once you have configured the channels and the application parameters, click the Record toolbar button ( ) or press the F5 key to start the operation. Results similar to the following are displayed in the Channel Plot window, showing the output of analog output channel 0 as measured by analog input channel 0.
  • Page 71 Part 2: Using Your Module...

  • Page 73: Chapter 5: Principles Of Operation

    Principles of Operation Block Diagram ............. . . Analog Input Features .

  • Page 74: Block Diagram

    Chapter 5 Block Diagram Figure 31 shows a block diagram of the DT9857 module and Figure 32 shows a block diagram of the DT9857E module. Figure 31: Block Diagram of the DT9857 Module...
  • Page 75 Principles of Operation Figure 32: Block Diagram of the DT9857E Module...

  • Page 76: Analog Input Features

    Chapter 5 Analog Input Features This section describes the following features of analog input (A/D) subsystem on the DT9857 and DT9857E modules: • Analog input channels, described on this page • Input ranges and gains, described on this page • IEPE functions, described on page 77 •...

  • Page 77: Iepe Functions

    IEPE Functions Applications that require accelerometer, vibration, noise, or sonar measurements often use IEPE sensors. IEPE conditioning is built-in to the analog input circuitry of the DT9857 and DT9857E module. The modules support the following software-programmable IEPE functions for each analog input channel: •...

  • Page 78: Analog Input Conversion Modes

    Single-value operations are simpler to use than continuous operations. Using software, you specify the analog input channel and the gain that you want to use. For the DT9857-8 and DT9857E-8, specify channel 0 to 7; for the DT9857-16 and DT9857E-16, specify channel 0 to 15.

  • Page 79: Continuous Scan Mode

    Using software, you can specify a channel list, clock frequency, start trigger, reference trigger, post-trigger scan count, and buffer using software. On the DT9857-8 and DT9857E-8 modules, you can enter up to 13 entries in the channel list: analog input channels 0-7, the tachometer input (channel 8), general-purpose counter 0 (channel 9), measure counter 1 (channels 10), measure counter 2 (channel 11), and the digital input port (channel 12).

  • Page 80: Input Triggers

    Pre-trigger data acquired 3 Post-trigger samples acquired Start Trigger occurs Reference Trigger occurs Figure 33: Continuous Scan Mode on the DT9857 and DT9857E Modules Using a Start and Reference Trigger Note: The Input Trigger LED on the module, shown on page...

  • Page 81: Start Trigger Sources

    (the computer issues a write to the module to begin conversions). Using software, specify the start trigger source as a software trigger. • External digital (TTL) trigger – For the DT9857 module, an external digital (TTL) trigger event occurs when the module detects a rising- or falling-edge transition on the signal connected to the External Trigger pin (pin 11) of the Digital connector on the module.

  • Page 82: Reference Trigger Sources

    DT9857 and DT9857E modules support the following trigger sources for the reference trigger: • External digital (TTL) trigger – For the DT9857 module, an external digital (TTL) trigger event occurs when the module detects a rising- or falling-edge transition on the signal connected to the External Trigger pin (pin 11) of the Digital connector on the module.

  • Page 83: Data Format And Transfer

    Data is written to multiple allocated input buffers continuously; when no more empty buffers are available, the operation stops. The data is gap-free. Note: DT9857 and DT9857E modules have a 16 kSample input FIFO that is used to store the acquired data before it is sent to the host.

  • Page 84: Analog Output Features

    Note: The DT9857E-8-xAO, DT9857E-16-xAO and their OEM versions are designed without analog output functionality. Output Range and Gain DT9857 and DT9857E modules can output bipolar analog output signals in the range of ±10 V using a gain of 1. Output Resolution The resolution of the analog output channel is fixed at 32-bits;...

  • Page 85: Output Conversion Modes

    Waveform Generation Mode The DT9857 and DT9857E modules support the ability to generate a waveform (specified in a single buffer) from the output channels. If you want the hardware to output the waveform without USB bus intervention, ensure that the waveform is equal to or less than the size of the output FIFO on the module (64 kSamples).
  • Page 86 88 for more information about the supported output trigger sources. The DT9857 and DT9857E hardware supports the ability to mute the output voltage to 0 V. Muting the output does not stop the analog output operation; instead, the analog output voltage is reduced to 0 V over 1020 samples.

  • Page 87: Continuous Analog Output Operations

    Use continuously paced analog output mode to output buffered values to the analog output channels and/or the digital output port continuously at a specified clock frequency. The DT9857 and DT9857E modules support the ability to start continuous analog output operations and continuous analog input operations simultaneously.

  • Page 88: Output Trigger

    The DT9857 and DT9857E hardware supports the ability to mute the output voltage to 0 V. Muting the output does not stop the analog output operation; instead, the analog output voltage is reduced to 0 V over 1020 samples.

  • Page 89: Data Format And Transfer

    Using software, specify the data encoding as binary. Error Conditions DT9857 and DT9857E modules report any underrun errors by sending an underrun event to the application. This event indicates that the data buffers are not being sent from the host to the module fast enough, and the D/A converter ran out of data.

  • Page 90: Tachometer Input Features

    Chapter 5 Tachometer Input Features You can connect a tachometer signal with a range of ±30 V to a DT9857 or DT9857E module. On the DT9857 module, you connect this signal to a BNC connector; on the DT9857E module, you connect this signal to pin 11 of the Digital connector. This signal has a maximum frequency of 1 MHz and a minimum pulse width of 0.4 s.
  • Page 91 Principles of Operation A data pipeline is used in the hardware to compensate for the A/D group delay and synchronizes the value of the tachometer input with the analog input measurements, so that all measurements are correlated in time. The tachometer input is treated like any other channel in the analog input channel list;...

  • Page 92: General-Purpose Counter/Timer Features

    Using software, specify C/T subsystem element 0 to set up the parameters for the general-purpose counter/timer. To read the counter/timer, specify channel 9 for the DT9857-8 or DT9857E-8 or channel 17 for the DT9857-16 or DT9857E-16 in the analog input channel list.

  • Page 93: C/T Clock Sources

    0.0112 Hz to 10 MHz. Connect the external clock to the C/T 0 clock input signal of the Digital connector on the DT9857 or DT9857E module. Counter/timer operations start on the rising edge of the clock input signal. Using software, specify the clock source as external and specify a clock divider between 2 and 4,924,967,296.

  • Page 94: Pulse Output Types And Duty Cycles

    Specify the gate type in software. Pulse Output Types and Duty Cycles DT9857 and DT9857E modules can output the following types of pulses from each counter/timer: • High-to-low transitions – The low portion of the total pulse output period is the active portion of the counter/timer clock output signal.

  • Page 95: Event Counting

    Principles of Operation • One-shot • Repetitive one-shot Note: The active polarity for each counter/timer operation mode is software-selectable. The following subsections describe these modes in more detail. Event Counting Use event counting mode if you want to count the number of rising edges that occur on the counter’s clock input when the counter’s gate signal is active (low-level or high-level).

  • Page 96: Edge-To-Edge Measurement

    Chapter 5 Edge-to-Edge Measurement Use edge-to-edge measurement mode if you want to measure the time interval between a specified start edge and a specified stop edge. The start edge and the stop edge can occur on the rising edge of the counter’s gate input, the falling edge of the counter’s gate input, the rising edge of the counter’s clock input, or the falling edge of the counter’s clock input.

  • Page 97: Rate Generation

    Principles of Operation To select continuous edge-to-edge measurement mode, use software to specify the counter/timer mode as continuous measure, the C/T clock source as internal, and the start edge type. Rate Generation Use rate generation mode to generate a continuous pulse output signal from the counter’s output line;...

  • Page 98: Repetitive One-Shot

    Chapter 5 Using software, specify the counter/timer mode as one-shot, the clock source as internal (recommended), the clock divider, the polarity of the output pulse (high-to-low transition or low-to-high transition), and the active gate type (rising edge or falling edge). Refer to page 94 for more information about pulse output types and to page 93...

  • Page 99: Measure Counter Features

    To use measure counter 1, specify channel 10 for the DT9857-8 and DT9857E-8 module, or channel 18 for the DT9857-16 or DT9857E-16 module in the analog input channel list. To use measure counter 2, specify channel 11 for the DT9857-8 or DT9857E-8 module, or channel 19 for the DT9857-16 or DT9857E-16 module in the analog input channel list.
  • Page 100 Chapter 5  C/T 0 Gate input rising edge • The signal that stops the measurement. The following signals are supported:  A/D conversion complete  Tachometer input falling edge  Tachometer input rising edge  Digital input 0 falling edge ...
  • Page 101 Principles of Operation • If the input subsystem sample frequency is slower than the selected input frequency, then the new measure count value is stored as each period measurement completes. When an input subsystem sample occurs, then the most recently stored measure count is written into the input data stream.
  • Page 102 Chapter 5 Using the count that is returned from the measure counter, you can determine the following: • Frequency between the start and stop signals/edges. You can calculate the frequency as follows:  Frequency = 48 MHz/(Number of counts – 1) where 48 MHz is the internal measure counter frequency For example, if the count is 201, the measured frequency is 240 kHz (48 MHz/200).

  • Page 103: Digital I/O Features

    • Operation modes Digital I/O Lines DT9857 and DT9857E modules support one digital input port, consisting of 8 digital input lines (lines 0 to 7) and one digital output port, consisting of 8 digital output lines (lines 0 to 7).

  • Page 104: Triggering Acquisition On Multiple Modules

    Note: You can synchronize acquisition on multiple DT9857 or DT9857E modules using the Sync Bus, described on page 105. The internal clock on the DT9857 and DT9857E modules when the synchronization mode is none (see page 105), is derived from the 48 MHz crystal oscillator and provides the timing for both the analog input and analog output subsystems on the module.

  • Page 105: Synchronizing Acquisition On Multiple Modules

    Sync Bus is used as the start trigger. When configured as none (the default mode), the DT9857 module uses the 48 MHz reference clock instead of the Sync Bus connector. The synchronization mode remains set until changed or until the application exits.
  • Page 106 * The RJ45 cables must be less than 1 foot in length. For minimum clock skew, the master module must be less than 4 inches away from the RJ45 distribution panel. Figure 38: Synchronizing the Analog Input Subsystems of Four DT9857 Modules Using the EP386 RJ45 Distribution Panel (Shown Using an External Trigger)
  • Page 107 Principles of Operation When synchronizing the analog input subsystems of multiple DT9857 modules, start the slave modules before starting the master module. When the master DT9857 module is triggered (using the software trigger, external digital trigger, or threshold trigger), both the master and the slave modules start acquiring data at the same time (within one A/D conversion of the clock).

  • Page 108: Dt9857E Modules

    Chapter 5 Synchronizing the Analog Input and/or Analog Output Subsystems of Multiple DT9857E Modules As shown in Figure 39, each DT9857E module provides four Sync Bus (RJ45) connectors that you can use to connect and synchronize the analog input and/or analog output subsystems of up to four DT9857E modules.
  • Page 109 Principles of Operation If you want to synchronize all the analog input subsystems of multiple DT9857E modules, use software to specify the synchronization mode of the A/D subsystem of each module as a master or slave. If you want to synchronize the analog output subsystems of multiple DT9857E modules, specify the synchronization mode of the D/A subsystem of each module as master or slave.
  • Page 110 Chapter 5 Master Analog Input Subsystem Settings: Synchronization Mode is Master. To Host PC Start Trigger can be Software, External Digital Trigger, or Threshold Trigger. Reference Trigger can be External Digital USB 3.0 HUB Trigger or Threshold Trigger. If using a reference trigger, set up the Port 1 Port 2 Port 3...
  • Page 111 Principles of Operation Figure 41 shows how to connect a maximum of four DT9857E modules to synchronize all the analog output subsystems. If you wanted to synchronize all the analog input subsystems and all the analog output subsystems, you would also use the wiring diagram shown in Figure Master Analog Output Subsystem Settings: To Host PC...
  • Page 112 Chapter 5 When synchronizing multiple DT9857E modules, start the slave modules before starting the master module. When the master DT9857E module is triggered, both the master and the slave modules start acquiring or outputting data at the same time (within one A/D or D/A conversion of the clock).

  • Page 113: Chapter 6: Supported Device Driver Capabilities

    Supported Device Driver Capabilities Data Flow and Operation Options..........Buffering .

  • Page 114: Options

    The tables in this chapter summarize the features available for use with the DT-Open Layers for .NET Class Library and the DT9857 and DT9857E modules. The DT-Open Layers for .NET Class Library provides properties that return support information for specified subsystem capabilities.

  • Page 115: Data Flow And Operation Options

    The DT9857 Series Device Driver automatically adjusts the FIFO half-full flag based on the size of the first user buffer on the queue rather than on the size of the A/D FIFO on the module. This ensures that each sample is transferred from the hardware FIFO to the user buffer without any additional time delay.

  • Page 116: Buffering

    Chapter 6 Buffering Table 7: Buffering Options DT9857 and DT9857E DOUT TACH QUAD Buffer Support SupportsBuffering Single Buffer Wrap Mode Support SupportsWrapSingle Inprocess Buffer Flush Support SupportsInProcessFlush a. The DT9857E-8-xAO, DT9857E-16-xAO and their OEM versions do not support the analog output (D/A) subsystem.

  • Page 117: Channels

    (channels 0 to 15), the tachometer input (channel 16), general-purpose counter 0 (channel 17), measure counter 1 (channel 18), measure counter 2 (channel 19), and the digital input port (channel 20). c. DT9857 and DT9857E modules support two analog output channels (0 and 1), and the digital output port (channel 2).

  • Page 118: Ranges

    Chapter 6 Ranges Table 12: Range Options DT9857 and DT9857E DOUT TACH QUAD Number of Voltage Ranges NumberOfRanges Available Ranges SupportedVoltageRanges ±10 V ±10 V Current Output Support SupportsCurrentOutput a. The DT9857E-8-xAO, DT9857E-16-xAO and their OEM versions do not support the analog output (D/A) subsystem.

  • Page 119: Thermocouple, Rtd, And Thermistor Support

    Supported Device Driver Capabilities Table 14: Current and Resistance Support Options (cont.) DT9857 and DT9857E DOUT TACH QUAD Software Programmable Internal Excitation Current Source SupportsInternalExcitationCurrentSrc Available Excitation Current Source Values SupportedExcitationCurrentValues Thermocouple, RTD, and Thermistor Support Table 15: Thermocouple, RTD, and Thermistor Support Options...

  • Page 120: Iepe Support

    Chapter 6 IEPE Support Table 16: IEPE Support Options DT9857 and DT9857E DOUT TACH QUAD IEPE Support SupportsIEPE Software Programmable AC Coupling SupportsACCoupling Software Programmable DC Coupling SupportsDCCoupling Software Programmable External Excitation Current Source SupportsExternalExcitationCurrentSrc Software Programmable Internal Excitation Current Source...

  • Page 121: Start Triggers

    If you choose a threshold trigger, you can program the threshold level as a value between ±10 V (gain of 1) or ±1 V (gain of 10). You can use any of the analog input channels as the threshold channel (channel 0 to 7 on the DT9857-8 or DT9857E-8, or channel 0 to 15 on the DT9857-16 or DT98557E-16).

  • Page 122: Reference Triggers

    Supported if the tachometer is included in the analog input channel list. d. If you choose a threshold trigger for the reference trigger on the DT9857 or DT9857E module, you can program the threshold level as a value between ±10 V for a gain of 1 or ±1 V for a gain of 10, and any of the supported analog input channels can be used as the threshold channel.

  • Page 123: Clocks

    Supported Device Driver Capabilities Clocks Table 20: Clock Options DT9857 or DT9857E DOUT TACH QUAD Internal Clock Support SupportsInternalClock External Clock Support SupportsExternalClock Simultaneous Input/Output on a Single Clock Signal SupportsSimultaneousClocking Base Clock Frequency BaseClockFrequency 27 MHz 27 MHz 48 MHz...

  • Page 124: Counter/Timers

    Chapter 6 Counter/Timers Table 21: Counter/Timer Options DT9857 or DT9857E DOUT TACH QUAD Cascading Support SupportsCascading Event Count Mode Support SupportsCount Generate Rate Mode Support SupportsRateGenerate One-Shot Mode Support SupportsOneShot Repetitive One-Shot Mode Support SupportsOneShotRepeat Up/Down Counting Mode Support SupportsUpDown...

  • Page 125: Tachometers

    Supported Device Driver Capabilities Table 21: Counter/Timer Options (cont.) DT9857 or DT9857E DOUT TACH QUAD Gate-Rising Edge Type SupportsGateRising Measure Mode Edge Types GateRising SupportedEdgeTypes GateFalling ClockRising ClockFalling ADCConversionComplete TachometerInputFalling TachometerInputRising DigitalInput0Falling DigitalInput0Rising DigitalInput1Falling DigitalInput1Rising DigitalInput2Falling DigitalInput2Rising DigitalInput3Falling DigitalInput3Rising DigitalInput4Falling...
  • Page 126 Chapter 6...

  • Page 127: Chapter 7: Troubleshooting

    Troubleshooting General Checklist ............Technical Support .

  • Page 128: General Checklist

    6. Check that you have wired your signals properly using the instructions in Chapter 7. Search the DT Knowledgebase in the Support section of the Data Translation web site (at www.mccdaq.com) for an answer to your problem. If you still experience problems, try using the information in...
  • Page 129 Table 23: Troubleshooting Problems (cont.) Symptom Possible Cause Possible Solution Device failure The DT9857 or DT9857E module cannot Check your cabling and wiring and tighten any error reported communicate with the Microsoft bus driver loose connections; see the instructions in or a problem with the bus driver exists.

  • Page 130: Technical Support

    Chapter 7 Technical Support If you have difficulty using a DT9857 or DT9857E module, Data Translation’s Technical Support Department is available to provide technical assistance. To request technical support, go to our web site at http://www.mccdaq.com and click on the Support link.

  • Page 131: If Your Module Needs Factory Service

    Troubleshooting If Your Module Needs Factory Service Most hardware models can be functionally tested, evaluated for repairs (if needed), and calibrated to factory specifications. An RMA# must be obtained from Applications Engineering in advance of sending any product back to Measurement Computing. Customers outside the USA must contact their local distributor for a return procedure.
  • Page 132 Chapter 7...

  • Page 133: Chapter 8: Calibration

    Calibration Using the Calibration Utility ..........Calibrating the Analog Input Subsystem .
  • Page 134 Note: Ensure that you installed the device driver for your module using the Data Acquisition OMNI CD prior to using the calibration utility. This chapter describes how to calibrate the analog input and output subsystems of a DT9857 or DT9857E module using the calibration utility.

  • Page 135: Using The Calibration Utility

    Start the DT9857 Calibration Utility as follows: 1. Click Start from the Task Bar. 2. For the DT9857 or DT9857E module, select Programs | Data Translation, Inc | Calibration | DT9857 Calibration Utility. The main window of the DT9857 Calibration Utility appears.

  • Page 136: Calibrating The Analog Input Subsystem

    To calibrate the analog input circuitry, you need to connect an external +9.3750 V precision voltage source to the DT9857 or DT9857E module. Connect the precision voltage source to the first channel you want to calibrate; for example, Analog In 0 (AD Ch0).

  • Page 137: Using The Manual Calibration Procedure

    2. Under the Calibration Settings area of the window, select the sampling frequency, in Hertz, and the gain that you want to use. Notes: The DT9857 and DT9857E modules have two power modes: low power mode and high power mode. Low power mode is calibrated when you specify a sampling frequency less than 52.734 kHz.
  • Page 138 Chapter 8 Note: At any time, you can click Restore Factory Settings to reset the A/D calibration values to their original factory settings. This process will undo any auto or manual calibration settings. Once you have finished this procedure, continue with “Calibrating the Analog Output Subsystem.”...

  • Page 139: Calibrating The Analog Output Subsystem

    Calibrating the Analog Output Subsystem To calibrate the analog output circuitry, you need to connect an external precision voltmeter to the analog output channels of the DT9857 or DT9857E module. Note: The DT9857E-8-xAO, DT9857E-16-xAO and their OEM versions do not support the analog output (D/A) subsystem.
  • Page 140 Chapter 8...

  • Page 141: Appendix A: Specifications

    Specifications Analog Input Specifications ........... Analog Output Specifications.

  • Page 142: Analog Input Specifications

    Appendix A Analog Input Specifications Table 24 lists the specifications for the analog input subsystem on the DT9857 and DT9857E  modules. Unless otherwise noted, specifications are typical at 25 Table 24: Analog Input Subsystem Specifications Feature DT9857 Specifications DT9857E Specifications...
  • Page 143 Specifications Table 24: Analog Input Subsystem Specifications (cont.) Feature DT9857 Specifications DT9857E Specifications DC Accuracy Offset error ±1 mV ±1 mV     Offset error temperature coefficient ±(7.2 V/C )/ Gain) ± 100 V/C ±(7.2 V/C )/ Gain) ± 100 V/C...
  • Page 144 Appendix A e. ENOB, SINAD, SNR, THD, and SFDR measurements were made with a 16384 point FFT with a minimum 4-term Blackman Harris window. f. Effective Number of Bits (ENOB) is calculated from the SINAD value with adjustment for level below full-scale of the input signal. ...
  • Page 145 DT9857 module as measured by QuickDAQ. In this example, a 1 dB input signal is connected to the DT9857 module and is sampled at 105.469 kHz using a gain of 1. The effective number of bits (ENOB) is 15.54.
  • Page 146 Appendix A Figure 43 shows the noise performance of the DT9857 module using QuickDAQ. In this example, the input channel was shorted with 50  and sampled at 105.469 kHz using a gain of 1. The noise is 52 VRMS.
  • Page 147 Specifications Figure 44 shows the analog input passband response of the DT9857 and DT9857E modules using a sampling rate of 48 kS/s. DT9857 and DT9857E Analog Input Passband Response (Fs = 48 kSPS) ‐0.2 ‐0.4 ‐0.6 ‐0.8 ‐1 Frequency, kHz Figure 44: Analog Input Passband Response of the DT9857 and DT9857E Modules...

  • Page 148: Analog Output Specifications

    Appendix A Analog Output Specifications Table 25 lists the specifications for the analog output subsystem on the DT9857 and DT9857E  modules. Unless otherwise noted, specifications are typical at 25 Note: The DT9857E-8-xAO, DT9857E-16-xAO and their OEM versions do not support the analog output (D/A) subsystem.
  • Page 149 Specifications Table 25: Analog Output Subsystem Specifications (cont.) Feature DT9857 and DT9857E Specifications Spurious Free Dynamic Range, SFDR (216 kSPS) –1 dBFS, 1 kHz output, 1 k load: 102 dB –6 dBFS, 1 kHz output, 1 k load: 118 dB Offset error ±0.5 mV...

  • Page 150: Digital I/O Specifications

    Appendix A Digital I/O Specifications Table 26 lists the specifications for the digital I/O subsystems on the DT9857 and DT9857E modules. Table 26: Digital I/O Specifications Feature DT9857 and DT9857E Specifications Number of digital I/O lines 16 (8 in, 8 out)

  • Page 151: Tachometer Input Specifications

    Specifications Tachometer Input Specifications Table 27 lists the specifications for the tachometer input on the DT9857 and DT9857E modules. Table 27: Tachometer Input Specifications DT9857 and DT9857E Feature Specifications Number of channels Resolution 31 bits per channel Input voltage range ±30 V...

  • Page 152: Measure Counter Specifications

    Appendix A Measure Counter Specifications Table 28 lists the specifications for the measure counters (counters 1 and 2) on the DT9857 and DT9857E modules. Table 28: Measure Counter Specifications Feature DT9857 and DT9857E Specifications Number of measure counters Resolution 31 bits per channel Clock frequency for measurement counters 48 MHz (20.8 ns resolution)

  • Page 153: General-Purpose Counter/Timer Specifications

    Specifications General-Purpose Counter/Timer Specifications Table 27 lists the specifications for the general-purpose counter/timer (C/T 0) on the DT9857 and DT9857E modules. Table 29: General Purpose Counter/Timer Specifications Feature DT9857 and DT9857E Specifications Number of general-purpose counter/timers Internal reference clock 48 MHz...

  • Page 154: Trigger Specifications

    Appendix A Trigger Specifications Table 30 lists the specifications for the triggers on the DT9857 and DT9857E modules. Table 30: Trigger Specifications Feature DT9857 and DT9857E Specifications Trigger sources Internal software trigger: Software-initiated External digital trigger: Software-selectable Threshold trigger: Software-selectable...

  • Page 155: Master Oscillator Specifications

    Specifications Master Oscillator Specifications Table 31 lists the specifications for the master oscillator on the DT9857 and DT9857E modules. Table 31: Master Oscillator Specifications DT9857 and DT9857E Feature Specifications Frequency 48 MHz Accuracy at 25 C ±30 ppm Drift over temperature 0 to 70C (Total) ±50 ppm...

  • Page 156: Power, Physical, And Environmental Specifications

    Appendix A Power, Physical, and Environmental Specifications Table 32 lists the power, physical, and environmental specifications for the DT9857 and DT9857E modules. Table 32: Power, Physical, and Environmental Specifications Feature DT9857 and DT9857E Specifications Power DT9857: +5 VDC @ 10 W DT9857E: +4.75 VDC to +28 VDC...

  • Page 157: Regulatory Specifications

    Specifications Regulatory Specifications The DT9857 and DT9857E modules are CE-compliant. Table 33 lists the regulatory specifications for the DT9857 and DT9857E modules. Table 33: Regulatory Specifications Feature DT9857 and DT9857E Specifications Emissions (EMI) FCC Part 15, Class A EN55011:2007 (Based on CISPR-11, 2003/A2, 2006)

  • Page 158: Connector Specifications

    – a. The standard version of the DT9857 and DT9857E modules supports an optional locking USB cable (the OEM version does not support a locking USB cable). You can purchase a locking USB cable separately from vendors such as Newnex Technology Corporation (part number UHRB-B00A-U60).

  • Page 159: External Power Supply Specifications

    Specifications External Power Supply Specifications Table 35 lists the specifications for the EP361 +5 V external power supply that is used with the DT9857 and DT9857E modules. Table 35: Specifications for the EP361 External Power Supply Feature Specifications Type Total Power medical power supply (TPEMG24-S050400-7)
  • Page 160 Appendix A Table 36 lists the specifications for the external power supply that is used with the DT9857E module. Table 36: Specifications for the External Power Supply Used with the DT9857E Module Feature Specifications Output voltage 4.75 VDC to +28 VDC Output current 5 V: 1.56 A with 4 A surge capability...

  • Page 161: Appendix B: Connector Pin Assignments And Led Status Indicators

    Connectors........... . Tachometer Connector (DT9857 Only) .

  • Page 162: Analog Input Connectors

    Appendix B Analog Input Connectors Figure 45 shows the layout of the analog input connectors on the DT9857 and DT9857E modules.   Channel n Analog In Channel n Analog In Return Figure 45: Analog Input Connectors...

  • Page 163: Analog Output Connectors

    Connector Pin Assignments and LED Status Indicators Analog Output Connectors Figure 46 shows the layout of the analog output connectors on the DT9857 and DT9857E modules.   Channel n Analog Out Channel n Analog Out Return Figure 46: Analog Output Connectors Note: The DT9857E-8-xAO, DT9857E-16-xAO and their OEM versions are designed without...

  • Page 164: Tachometer Connector (Dt9857 Only)

    Appendix B Tachometer Connector (DT9857 Only) Figure 47 shows the layout of the tachometer connector on the DT9857 module. Note that on the DT9857E, the tachometer input is provided on pin 11 of the Digital connector.   Tachometer In Tachometer In Return Figure 47: Tachometer Connector (DT9857 Only)

  • Page 165: External Trigger Connector (Dt9857E Only)

    External Trigger Connector (DT9857E Only) Figure 48 shows the layout of the external digital (TTL) connector on the DT9857E module. Note that on the DT9857, the external digital (TTL) input is provided on pin 11 of the Digital connector. External Trigger In External Trigger In Return...

  • Page 166: Digital Connector

    Appendix B Digital Connector Figure 49 shows the layout of the 25-pin, D-shell, Digital connector on the DT9857 and DT9857E modules. Figure 49: Layout of the Digital Connector Table 37 lists the pin assignments for the Digital connector on the DT9857 and DT9857E modules.

  • Page 167: External Usb Connector

    USB connector on the DT9857 and DT9857E modules. Figure 50: Layout of the USB Connector Table 38 lists the pin assignments for the USB connector on the DT9857 and DT9857E modules. Table 38: Pin Assignments for the USB Connector Connector Connector...

  • Page 168: External Power Connectors

    The following sections describe the power connectors that are provided for the DT9857 and DT9857E modules. External Power Connector on the DT9857 Module The DT9857 module provides a DIN connector for connecting an external +5 V power supply; the EP361 power supply connects to the DIN connector. Figure 51 shows the layout of the DIN power connector.

  • Page 169: External Power Connectors On The Dt9857E Module

    Connector Pin Assignments and LED Status Indicators External Power Connectors on the DT9857E Module Both the standard DT9857E module and the OEM version of the DT9857E module provide two connectors for attaching a +4.75 VDC to +28 VDC external power supply: a DIN connector and a 3-position Phoenix header.
  • Page 170 Appendix B Figure 53 shows the layout of the 3-pin Phoenix header on the DT9857E module. Terminal 2 Terminal 3 Terminal 1 Figure 53: Layout of the 3-Position Phoenix Header Table 41 lists the terminal assignments for the 3-position header on the DT9857E module. Table 41: Terminal Assignments for the 3-Position Header on the DT9857E Module Terminal Number Signal Description...

  • Page 171: Sync Bus Connector

    Connector Pin Assignments and LED Status Indicators Sync Bus Connector The following sections describe the Sync Bus connectors on the DT9857 and DT9857E modules. Sync Bus Connector on the DT9857 Module Figure 54 shows the Sync Bus (RJ45) connector on the DT9857 module.

  • Page 172: Sync Bus Connector On The Dt9857E Module

    Appendix B Sync Bus Connector on the DT9857E Module Figure 55 shows the Sync Bus (RJ45) connectors on the DT9857E module. DA Out   Figure 55: Sync Bus (RJ45) Connectors If you want to synchronize the analog input channels of multiple modules, you must connect a cable from the Ain Sync Bus connector on one module to the Ain Sync Bus connector on the next module.
  • Page 173 Connector Pin Assignments and LED Status Indicators The pin assignments of Ain Sync Bus connectors (B and D) on the DT9857E are listed in Table Table 43: Sync Bus Connector Pin Assignments Description 48 MHz Reference Clock + 48 MHz Reference Clock – A/D Trigger + A/D Sync + A/A Sync –...

  • Page 174: Stp25 Screw Terminal Panel

    Appendix B STP25 Screw Terminal Panel The STP25 contains one 25-pin connector and a screw terminal block (TB1). The 25-pin connector provides access to the signals from the Digital connector on the DT9857 and DT9857E modules. Figure 56 shows the layout of the STP25 screw terminal panel.
  • Page 175 Digital Output 1 Digital Output 0 Digital Ground C/T Out C/T Clock Event Out C/T Gate External Trigger on the DT9857; Tachometer Input on the DT9857E Digital Ground Digital Input 7 Digital Input 6 Digital Input 5 Digital Input 4...

  • Page 176: Led Status Indicators

    Appendix B LED Status Indicators This section describes the LED status indicators on the DT9857 and DT9857E modules. LED Status Indicators on the DT9857 Module The DT9857 module has LED indicators on the front and rear panels. Figure 57 shows the LEDs on the front panel of the DT9857 module.
  • Page 177 Connector Pin Assignments and LED Status Indicators The LEDs are described in Table Table 46: LED Status Indicators on the DT9857 Module Color of the LED Status Description Location Input Trigger Idle Front Panel (Bottom) Solid amber Input subsystem armed; it is waiting for an external digital...

  • Page 178: Led Status Indicators On The Dt9857E Module

    Appendix B LED Status Indicators on the DT9857E Module The DT9857E module has LED indicators on the front and rear panels. Figure 59 shows the LEDs on the front panel of the DT9857E module. Figure 60 shows the LEDs on the rear panel of the DT9857E module.
  • Page 179 Connector Pin Assignments and LED Status Indicators Table 47: LED Status Indicators on the DT9857E Module Color of the LED Status Description Location Input Trigger Idle Front Panel Solid amber Input subsystem armed; it is waiting for an external digital trigger, threshold trigger, or Sync Bus trigger (the module must have been configured for one of these trigger types) Solid green...
  • Page 180 Appendix B...

  • Page 181: Appendix C: Register-Level Programming

    Register-Level Programming Writing to the EEPROM Register ..........

  • Page 182: Writing To The Eeprom Register

    If you want to change the default values for the coupling type, current source, and Sync Bus termination that are defined in the Open Layers Control Panel programmatically, you can use the Data Acq SDK function olDiagWriteReg to write to the EEPROM register of each DT9857 ad DT9857E module.
  • Page 183 Register-Level Programming To read the current source, use the olDiagReadReg() command as follows: OLSTATUS olStatus = olDiagReadReg(m_hDev, I2C_MEM_BASE + EEPROM_OFFSET_CURRENT_SOURCE + channelNumber, currentSource, 1); To update the Sync Bus termination on the DT9857E module, use the olDiagWriteReg() command as follows: OLSTATUS olStatus = olDiagWriteReg(m_hDev, I2C_MEM_BASE + EEPROM_OFFSET_SYNC_TERMINATION, syncBusTermination, 1);...
  • Page 184 Appendix C...

  • Page 185: Index

    Index Index applet, Open Layers Control Panel application wiring AC coupling analog inputs accessories analog output EP361 continuous edge-to-edge measurement EP386 panel edge-to-edge measurement EP402 Rack Mount Kit event counting EP403 cable measure counters STP25 screw terminal panel period measurement administrator privileges pulse output aliasing...
  • Page 186 Index analog output continuous scan mode counter/timer Control Panel applet digital I/O conversion modes number of continuous analog input chassis grounding stud continuous analog output clock sources digital I/O counter/timer single-value analog input clock-falling edge type single-value analog output clock-rising edge type single-values analog input clocks waveform generation mode...
  • Page 187 DataAcq SDK external digital trigger DC coupling negative TTL device driver positive TTL device drivers external power connector Device Selection window for the DT9857 differential channels external USB connector number of digital connector digital I/O factory service lines features operation modes...
  • Page 188 Index gate-rising edge type MaxDifferentialChannels generating pulses MaxExtClockDivider group delay MaxFrequency MaxMultiScanCount MaxRetriggerFreq MaxSingleEndedChannels hardware features measure counters high-edge gate type features high-level gate type wiring hot-swapping measuring pulses MinExtClockDivider MinFrequency MinRetriggerFreq IEPE features muting the output voltage IEPE support inprocess buffers input channels...
  • Page 189 Index pulses repetitive one-shot pulse output ranges resolution output FIFO analog input output pulses analog output Output Trigger LED available digital I/O number of retrigger clock frequency period measurement returning boards to the factory wiring RJ45 connector physical specifications ports, digital I/O positive threshold trigger post-trigger acquisition mode post-trigger scan count...
  • Page 190 Index start trigger sources SupportsSingleValue stopping an operation SupportsSoftwareTrigger STP25 screw terminal panel SupportsStaleDataFlag layout SupportsSyncBusTrigger SupportedEdgeTypes SupportsSynchronization SupportedExcitationCurrentValues SupportsUpDown SupportedGains SupportsVariablePulseWidth SupportedResolutions SupportsWaveformModeOnly SupportedThresholdTriggerChannel SupportsWrapSingle SupportedVoltageRanges Sync Bus SupportsACCoupling Sync Bus connector SupportsBinaryEncoding Sync Bus trigger SupportsBuffering SynchronizationMode SupportsClockFalling system requirements SupportsClockRising SupportsContinuous...
  • Page 191 Index Sync Bus threshold troubleshooting procedure technical support troubleshooting table TTL trigger units, counter/timer unmuting the output voltage unpacking up/down counting wiring USB 3.0 hub USB cable USB connector USB expansion hub USB LED variable pulse width Visual Basic for .NET programs Visual C# programs voltage ranges number of...
  • Page 192 Index...

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