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July 2025
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779537-01, RS-485/RS-422, 3 MB, PXI-8431/8 Serial Interface Module
Rated 4.5/5 | 19 ratings
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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
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 779537-01 PXI Serial Interface Module
National Instruments part number 779537-01 is an identifying part number of the PXI-8431/8, an RS-485/RS-422 Interface module designed for PXI systems. This module delivers high-speed serial communication with a maximum baud rate of 3 Mb per second, making it ideal for demanding industrial and laboratory applications requiring reliable, robust serial communication over long distances. The 779537-01 module supports flexible data transmission, allowing for configurable data bits, with common settings including 5, 7, and 8 bits per packet. For example, standard ASCII transmission can utilize 7 bits, while extended ASCII requires 8 bits, accommodating a range of communication protocols.
This module leverages RS-485 (EIA-485 Standard) technology, an enhancement over RS-422, allowing for up to 32 devices on a single bus, compared to RS-422's limit of 10 devices. This increased capacity makes the 779537-01 particularly suitable for complex systems where multiple devices need to communicate over the same network. Additionally, the module’s RS-485 technology includes enhanced electrical characteristics to maintain signal integrity under maximum load conditions, ensuring consistent and reliable communication across all connected devices. The 779537-01 is designed to support serial communication over cable lengths up to 4000 feet. It is equipped with a 68-position SCSI connector and includes a 68-pin SCSI to 8 DB-9 male connector adapter cable, simplifying system integration.
The module operates on +5 VDC at 925 mA under typical conditions, with a maximum power draw of 1.4 A. Compact and lightweight, the module has physical dimensions of 3.94 x 6.37 inches and a weight of 137 grams, making it easy to integrate into PXI systems without significant bulk.
| Part Number | 779537-01 |
|---|---|
| Model Name | PXI-8431/8 |
| Part Type | RS-485/RS-422 Interface Module |
| Maximum Baud Rate | 3 Mb/s |
| Data Bits | Configurable (5, 7, 8 bits) |
| RS-485 Capacity | Up to 32 devices |
| Cable Length | Up to 4000 feet |
| Connector Type | 68-position SCSI, 68-pin SCSI to 8 DB-9 adapter cable |
| Power Consumption | +5 VDC at 925 mA (typical), 1.4 A (maximum) |
| Dimensions | 3.94 x 6.37 inches |
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