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NI GPIB-120A

Product is obsolete. NI recommends the NI GPIB-120B.

  • Built-in 120 or 240 VAC power supply
  • Signal buffering extends the maximum GPIB cable limit to 40 m (device load every 2 m of bus cable)
  • Software-transparent -- no software modifications required
  • 1600 V electrical isolation between GPIB systems
  • Bidirectional expansion -- controllers, talkers, and listeners can exist on either side
  • Expands the number of GPIB devices to 28
Data Sheet  |  Specifications popup

The NI GPIB-120A is a GPIB expander. IEEE 488.1 prescribes a maximum of 15 electrical device interface loads in a GPIB system. A GPIB-120A increases the maximum number of GPIB system devices from 15 to 28. It is also useful in test and measurement systems because it provides an electrically isolated interface to one or more devices. The GPIB-120A is software-transparent; you do not need to rewrite application software.

Note: The GPIB-120A is obsolete. NI recommends the GPIB-120B bus isolator and expander.

No part number and pricing information available for NI GPIB-120A.

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Specifications Documents


Specifications Summary


Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

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