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July 2025
SCXI-1339
SCXI-1339 Front-Mounting Terminal Block
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic 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 SCXI-1339 Terminal Block
The National Instruments SCXI-1339 (Part Number: 777687-39) is a front-mounting Terminal Block. This Terminal Block is designed solely for use with the National Instruments SCXI-1129 Multiplexer Switch. With this Terminal Block, the user can configure the SCXI-1129 as a 2-wire, dual 4 by 32 matrix. For column expansion, the NI SCXI-1339 can also accept matrix expansion cables via row connection. Using the SCXI 1339 with the SCXI-1129 simplifies wiring for analog signals; this arrangement supports both high and low voltage levels.
This Terminal Block can easily be plugged into the front-end connector provided on the SCXI-1129. For more security and to keep the Terminal Block held firmly in position, a couple of thumbscrews are also provided. The maximum channel-to-channel and channel-to-earth working voltage allowed with this model is 150 V. Since it is a measurement category I rated device, the NI SCXI-1339 can only be used with less than or equal to 150 V. However, it is tested to withstand up to 800 V surge voltages. The installation and configuration of this Terminal Block does not require any additional software or hardware resources.
The 4 x 32 matrix achievable with the help of the SCXI-1339 offers the user control of dual, independent 4 x 32 matrixes. In this configuration, the user can make connections to the rows through the Terminal Block or the HVAB, whereas columns can be accessed via the Terminal Block.
SCXI-1339 Obsolete Status has been announced by National Instruments, but the Terminal Block will still be available for purchase and repairs by Apex Waves.
| Model | SCXI-1339 |
|---|---|
| Part Number | 777687-39 |
| Manufacturer | National Instruments |
| Type | Terminal Block |
| Compatible Models: | SCXI-1129 |
| Configuration | Configures the SCXI-1129 as a dual 4x32 (2-wire) matrix |
| Measurement Category | Category I |
| Maximum Working Voltage | 150 V |
| SCXI-1339 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for SCXI-1339:
National Instruments SCXI-1339 Frequently Asked Questions
Question: How do I connect the SCXI-1339 to the SCXI-1129 front panel?
Answer: To connect the SCXI-1339 to the SCXI-1129 front panel, first install the SCXI-1129. Then, plug the SCXI-1339 into the front connector of the SCXI-1129. Tighten the screws on the terminal block rear panel to hold it in place.
Question: What is the maximum channel-to-earth working voltage on the NI SCXI-1339?
Answer: The maximum channel-to-earth voltage on the NI SCXI-1339 is 150 V.
Question: What is the relay operate time of the SCXI-1339?
Answer: The relay operate time of the SCXI-1339 is 4 ms maximum.
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Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
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