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PXIe-4844, 4 Optical Channel, PXI Universal Input Module
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" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
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May 2025
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Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments PXIe-4844 PXI Universal Input Module
The NI PXIe-4844 (Part Number: 781285-01) does not need any accessories for operation. This module has 2 slots, 4 optical channels, 10 Hz full spectrum scan frequency, 1510 to 1590 nm wavelength range, and can be used with the NI-OSI driver. The PXIe-4844 Optical Sensor Interrogator is designed for fiber Bragg grating or FBG optical sensors. The four optical channels are sampled at the same time at 10 Hz for measuring FBG strain and temperature sensors. This Universal Input Module also has an optical core, which is the combination of a high-power, low-noise swept wavelength laser with fiber Fabry-Perot tunable filter technology.
Each of the 4 optical channels on the PXIe 4844 can scan a maximum of 20 FBG sensor. This means over 80 FBG sensors for each module, based on the sensor range and sensitivity. The maximum quantity of FBG sensors for each module can be increased by linking at least one optical channel to an external optical multiplexer or by adding additional PXIe-4844 modules to the same PXI Chassis. For electrical data acquisition and control, the NI PXIe-4844 Optical Sensor Interrogator can additionally be integrated into the same chassis as other PXI modules.
The user can configure the National Instruments PXIe-4844 PXI Universal Input Module in NI-OSI Explorer, which is a configuration manager that scans the optical wavelength range to recognize every linked FBG sensor. Once the user specifies the range and scaling equations, then every scan will automatically analyze the information into separate sensor measurements and scale the information correctly.
| Model | PXIe-4844 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 781285-01 |
| Type | PXI Universal Input Module |
| Channels | 4 |
| Wavelength Range | 1510 nm to 1590 nm |
| Sample Rate | 10 Hz ± 0.1 Hz |
| Dimensions | 5.1 in. × 8.4 in. × 1.6 in. |
| Weight | 7.5 oz. |
| Warranty | 2-3 Year Warranty |
| PXIe-4844 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for PXIe-4844:
National Instruments PXIe-4844 Frequently Asked Questions
Question: How many channels does the PXIe-4844 Optical Sensor Interrogator have?
Answer: The PXIe-4844 Optical Sensor Interrogator has 4 channels, but can be expanded to 8 or 16 channels with the use of an external optical multiplexer.
Question: Does the NI PXIe-4844 Optical Sensor Interrogator have the capability to daisy chain?
Answer: Yes, the NI PXIe-4844 Optical Sensor Interrogator can daisy chain 80 sensors on one module.
Question: How can I guarantee the specified EMC performance when utilizing the AUX port on the NI PXIe-4844?
Answer: To guarantee the specified EMC performance when utilizing the AUX port on the NI PXIe-4844, you can install a snap-on ferrite bead (part number: 781233-01).
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