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July 2025
GPIB-140A
GPIB-140A, Up to 1 km Distance, 13 Additional Devices per Extension, GPIB Extender
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 GPIB-140A GPIB Extender
The NI GPIB-140A (Part Numbers: 777997-01, 777997-02, 777997-03, 777997-04, 777997-05, 777997-06, 185135B-01) is a GPIB Bus Extender. This device easily eradicates the cable length and device loading related restrictions which are compulsory by the IEEE 488 standard. The GPIB-140A is fully compatible with IEEE 488.1 and IEEE 488.2 standards. As per the IEEE 488 standard, the total length of any GPIB system cannot exceed 20 m. A pair of these GPIB Extenders can reach a total distance of 1 km without any modifications and without affecting the integrity of the user’s GPIB system.
This GPIB Extender can support up to 1 km fiber-optic cable. The NI GPIB-140A comes with a buffered transfer technique, making this model one of the quickest GPIB Bus Extenders available. With this model, the user can achieve faster than 2.8 Mbytes while operating in the HS488 protocol. This GPIB Extender can be deployed with minimal effort does not require additional hardware. In typical scenarios, a computer device is connected to a cable extender on one end. On the far end, a GPIB instrument is connected to a similar cable extender. Both cable extenders are then interconnected via a fiber-optic cable.
Each NI GPIB-140A continuously monitors GPIB activity and translates GPIB signals into parallel or serial signals for transmission to the receiving extender. The receiving extender receives serial or parallel signals from the transmitting extender and converts them to IEEE 488 signals. The NI GPIB-140A does not necessitate modification in existing software applications because it is software transparent.
| Model | GPIB-140A |
|---|---|
| Manufacturer | National Instruments |
| Part Numbers | 777997-01, 777997-02, 777997-03, 777997-04, 777997-05, 777997-06, 185135B-01 |
| Type | GPIB Extender |
| Transfer Rates | IEEE 488.1: 1.1 Mbytes/s maximum HS488: 2.8 Mbytes/s maximum |
| Distance per Extension | 1 km maximum |
| Loading per Extension | as many as 13 additional devices |
| Dimensions | 3.5 × 5.65 × 1.62 in. |
| Weight | 0.55 lb. |
| GPIB-140A Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for GPIB-140A:
National Instruments GPIB-140A Frequently Asked Questions
Question: What are the differences between the six part numbers for the GPIB-140A?
Answer: The GPIB-140A has six power source options: part number 777997-01 with U.S. 120 VAC, part number 777997-02 with Swiss 220 VAC, part number 777997-03 with Australian 240 VAC, part number 777997-04 with Universal Euro 240 VAC, part number 777997-05 with North American 240 VAC, or part number 777997-06 with United Kingdom 240 VAC.
Question: Are multiple extensions permitted on the NI GPIB-140A?
Answer: Yes, multiple extensions are permitted in any combination of linear or star patterns.
Question: What are the two operating modes of the GPIB Extender?
Answer: The GPIB-140A can operate in either buffered or unbuffered (interlocked) mode.
Question: Which cable can be used with the NI GPIB-140A?
Answer: The 10, 50, 100, 500, or 1000 m T7 cable can be used with the GPIB.
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