Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
PXI-8431-4 In Stock | Ships Today
PXI-8431/4, 4-Port, RS-485/RS-422 Protocols, PXI Serial Interface Module
Rated 4.6/5 | 20 ratings
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Ground Shipping
✔ NIST Calibration Available
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 PXI-8431/4 PXI Serial Interface Module
The PXI-8431/4 (Part number: 778985-01) is an RS-485/RS-422 Interface that sends and receives bytes of data one piece at any given moment. This is slower than parallel communication, which permits the transmission of a whole byte on the double. However, it is less complex and can be utilized over longer separations. For instance, the IEEE 488 details for parallel communication express that the cabling between gears can be close to 20 meters.
Commonly, Serial Interfaces such as the PXI-8431/4 are utilized to transmit ASCII information. Communication is finished utilizing 3 transmission lines: (1) Ground, (2) Transmit, and (3) Receive. The ports can transmit information on one line while getting information on another. This is alluded to as Full-Duplex transmission. Different lines are accessible for handshaking; however, these are not required. The imperative serial attributes are baud rate, information bits, stop bits, and equality. The device has a maximum baud rate of 3 MB/s.
In the PXI-8431/4, the Baud rate plays an important role. This is a speed estimation for communication and shows the quantity of bit exchanges every second. For instance, 300 bauds is 300 bits for each second. When we allude to a clock cycle, with regards to serial, we mean the baud rate. For instance, if the convention calls for 4800 baud rate, at that point the time is running at 4800Hz. This implies the serial port is inspecting the information line at 4800Hz. Basic baud rates for phone lines are 14400, 28800, and 33600. These rates lessen the separation by which gadgets can be isolated. These high baud rates are utilized for gadget communication where the gadgets are situated almost each other. The device supports the RS-422 and RS-485 serial protocols. It is equipped with a 10-position modular jack I/O connector. The device weighs 102 g, and measures 4.2 x 5.6 in. in physical dimensions. It has power requirements of 725 mA typical and 1.1 A maximum at +5 VDC, and has a recommended operating temperature range of –20 to 70 °C.
PXI-8431/4 Mature Status has been announced by National Instruments, but the module will still be available for purchase and repairs by Apex Waves.
| Model | PXI-8431/4 |
|---|---|
| Part Number | 778985-01 |
| Manufacturer | National Instruments |
| Type | PXI Serial Interface Module |
| Ports | 4 |
| Supported Serial Protocols | RS-422 and RS-485 |
| Maximum Baud Rate | 3 Mb/s |
| Dimensions | 3.94 x 6.37 in. |
| Weight | 140 g. |
| Warranty | Three Year Warranty |
| PXI-8431/4 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote for Pricing |
Associated part numbers for PXI-8431-4:
National Instruments PXI-8431/4 Frequently Asked Questions
Question: Which transceiver modes are available on the PXI-8431/4?
Answer: The Serial Interface Module has 4-wire and 2-wire transceiver modes available.
Question: What is the maximum cable length for the NI PXI-8431/4?
Answer: The module has a maximum cable length of 1.2 km.
Question: Which operating systems are compatible with the nterface device?
Answer: LabVIEW Real-Time and Windows are compatible with the PXI-8431/4.
Question: What is the maximum transfer rate for the PXI-8431/4?
Answer: The maximum transfer rate is 2,000 kb/s.
Delivery:
No hassle return policy.
Dedicated customer service team.
Payment:
Receive Price & Availability Today!
Ask About Our Tiered Calibration Levels
Option & Modules:
Confirm Your Requirements or Versions
Cost & Lead Time Available Upon Request for Service
Repair Evaluation: $150
Common Typos:
Why Buy From Apex Waves:
