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INSTALLATION GUIDE AND SPECIFICATIONS
PXIe-4844
This document includes the installation instructions and specifications for the National
Instruments PXIe-4844 Optical Sensor Interrogator (OSI) module. The PXIe-4844 is a dual-slot,
3U PXI Express data acquisition module for fiber Bragg grating (FBG) optical sensors. The
PXIe-4844 provides four optical channels that are simultaneously sampled at 10 Hz, and is
expandable to eight or 16 channels with an external optical multiplexer.
FBG fiber optic sensing provides many benefits over conventional electrical sensing because it
is nonconductive, electrically passive, and immune to EMI. FBG technology also enables
measurements over long distances without loss of signal accuracy and provides the ability to
daisy-chain dozens of sensors along a single optical fiber. The PXIe-4844 requires no calibration
as it continuously adjusts its measurements using an on-board NIST traceable wavelength
reference.
Caution
avoid injury, data loss, or a system crash.
Safety Guidelines
Follow these guidelines when installing and using the PXIe-4844.
Caution
cover is connected to the LC/APC connector port. The laser enables when the device
receives power.
Caution
when the device is powered on. The laser radiation is not visible to the human eye,
but it can seriously damage your eyesight.
Caution
radiation exposure from the laser source.
Caution
a manner not described in this document.
This icon denotes a caution, which advises you of precautions to take to
Do not enable the laser unless an optical connector or LC/APC connector
Never look into the end of an optical cable attached to an optical output
Do not modify the PXIe-4844 module. This may result in hazardous
The protection provided by the PXIe-4844 can be impaired if it is used in
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Summary of Contents for National Instruments PXIe-4844
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Page 1: Safety Guidelines
Instruments PXIe-4844 Optical Sensor Interrogator (OSI) module. The PXIe-4844 is a dual-slot, 3U PXI Express data acquisition module for fiber Bragg grating (FBG) optical sensors. The PXIe-4844 provides four optical channels that are simultaneously sampled at 10 Hz, and is expandable to eight or 16 channels with an external optical multiplexer. -
Page 2: Electromagnetic Compatibility Guidelines
The product shipping kit includes the PXIe-4844 hardware module and the NI-OSI driver software DVD. The PXIe-4844 module ships in an antistatic package to prevent damage from electrostatic discharge (ESD), and the package is inside a hard-shelled plastic case. Before removing the hardware module from the antistatic package, touch the antistatic package to a metal part of your computer chassis to discharge any static electricity. -
Page 3: What You Need To Get Started
FBG sensors Multiplexer for additional channels (optional) Installing the NI-OSI Driver Software Install the NI-OSI driver software on the host computer before installing the PXIe-4844 module. Refer to , located in the readme_OSI.html National Instruments\OSI Explorer directory, for software installation instructions, LabVIEW compatibility information, and system requirements. - Page 4 Remove the filler panels covering the selected slots. Align the PXIe-4844 with the card guides on the top and bottom of the selected slots. 4 | ni.com | PXIe-4844 Installation Guide and Specifications...
- Page 5 PXIe-4844 should be even with the front panel of the chassis. 11. Tighten the four front panel mounting screws to 0.31 N · m (2.7 lb · in.) on the top and bottom of the module front panel to secure the PXIe-4844 to the chassis. 12. Power on the chassis.
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Page 6: Connecting Sensors
Loosen the four front panel mounting screws on the module. Press the injector/ejector handle down. Slide the module out of the chassis. Place the PXIe-4844 in its original antistatic bag. Store the module within its hard-shelled plastic case. Connecting Sensors The PXIe-4844 has four simplex singlemode LC/APC connector ports to connect sensors. - Page 7 Do not reuse dirty sections of the compress. Discard the used compress. PXIe-4844 Installation Guide and Specifications | © National Instruments | 7...
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Page 8: Using The Ni-Osi Explorer And Labview Vis
The NI-OSI driver software installs the NI-OSI Explorer and the NI-OSI LabVIEW VIs. Use the NI-OSI Explorer to identify and configure the optical sensors connected to the PXIe-4844. Use the Optical Measurement VIs in LabVIEW to perform optical sensing measurements. To get started: Select Start»All Programs»National Instruments»NI-OSI Explorer»NI-OSI... - Page 9 Repeatability............. 1 pm Physical Characteristics If you need to clean the PXIe-4844, use a soft, non-metallic brush. Make sure that the device is completely dry and free from contaminants before returning it to the PXI Express chassis. For two-dimensional drawings and three-dimensional models of the...
- Page 10 Non-operating (IEC 60068-2-7) ....25 g peak, half-sine, 11 ms pulse Random vibration Operating (ETSI 300 019-2-3)....0.15 g , 5 Hz to 100 Hz Non-operating (IEC 60068-2-64) .....0.8 g , 10 Hz to 150 Hz 10 | ni.com | PXIe-4844 Installation Guide and Specifications...
- Page 11 National Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on Waste and Electronic Equipment, visit ni.com/environment/ weee National Instruments (RoHS) National Instruments RoHS ni.com/ (For information about China RoHS compliance, environment/rohs_china go to ni.com/environment/rohs_china PXIe-4844 Installation Guide and Specifications | © National Instruments | 11...
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Page 12: Worldwide Support And Services
For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patents Notice at ni.com/patents. You can find information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product.
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