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July 2025
777997-01
777997-01, Type X2 Shielded, GPIB Extender, GPIB-140A 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 777997-01 GPIB Extender
National Instruments part number 777997-01 is an identifying part number for the GPIB-140A a GPIB Extender. This device effectively extends the cable length and device loading limitations imposed by the IEEE 488 standard. The NI 777997-01 is fully compliant with IEEE 488.1 and IEEE 488.2 standards, which specify a maximum system length of 20 meters. With a pair of GPIB Extenders like the 777997-10, the total distance can be extended up to 1 km without any modifications, maintaining the integrity of the GPIB system. Each unit continuously monitors GPIB activity and converts GPIB signals into serial or parallel signals for transmission over long distances. At the receiving end, the extender converts these signals back into IEEE 488 signals.
Importantly, this Extender is transparent to existing software applications, requiring no modifications for seamless integration. This GPIB Extender supports fiber-optic cables up to 1 km in length. The NI 777997-01 utilizes a buffered transfer technique, making it one of the fastest GPIB Bus Extenders available, achieving speeds greater than 2.8 Mbytes per second when using the HS488 protocol. Setting up this extender is straightforward and does not require additional hardware. In a typical setup, a computer device connects to one end of a cable extender, while a GPIB instrument connects to the other end of a similar extender.
These extenders are then linked together via a fiber-optic cable for extended-distance communication. Moreover this GPIB Extender utilizes a transmission cable with a diameter of 3.0 × 6.5 mm, designed for robust performance. The cable features a 62.5/125 micron core/clad configuration with a numerical aperture (NA) of 0.275, optimized for transmitting signals efficiently. Operating at an 850 nm wavelength, it exhibits an attenuation of 3.0 dB per kilometer, ensuring reliable signal integrity over long distances.
The cable is of duplex style, terminated with ST-style connectors, which provide secure connections and easy installation. The transmission interface unit of the 777997-01 incorporates optical transmitter and receiver components (such as HFBR1414, HFBR2416, or equivalent models) with ST-style optical cable connectors, facilitating seamless communication between GPIB devices over extended distances using fiber-optic technology.
| Model | 777997-01 |
|---|---|
| Model Range | GPIB-140A |
| Part Type | GPIB Extender |
| Transfer Rates | IEEE 488.1: 1.1 Mbytes/s maximumHS488: 2.8 Mbytes/s maximum |
| Distance per Extension | 1 km maximum |
| Loading per Extension | as many as 13 additional devices |
| GPIB Connector | 26-position latching connector with cable toIEEE 488 24-pin connector included in shipping kit |
| GPIB Interface Load | Two standard loads, AC and DC |
| GPIB Cable | Type X2 shielded |
| Case Material | All metal enclosure |
Associated part numbers for 777997-01:
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