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National Instruments GPIB-120A GPIB bus isolator/expander
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National Instruments · GPIB

GPIB-120A

The National Instruments GPIB-120A is a bus isolator/expander for IEEE 488 instrument systems. NI identifies it as an option for electrical isolation and for expanding GPIB systems beyond their standard device loading.

ManufacturerNational Instruments
ModelGPIB-120A
Product TypeGPIB bus isolator/expander
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Free Shippingfull policy linked
30-Day Warrantystandard coverage
30-Day Returnspolicy applies
Technical Supportmodel & compatibility help
InterfaceIEEE 488 (GPIB)
Electrical isolationUp to 1,600 V between GPIB systems
Onboard memoryNo RAM; flip-flop logic
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Overview

Product overview

Key product information and technical features.

  • Provides electrical isolation between GPIB systems.
  • Supports bus expansion in IEEE 488 instrument systems.
  • Uses flip-flop logic rather than onboard RAM.
Verified specifications

Technical data

Verified product specifications.

Bus interfaceIEEE 488 (GPIB)
Electrical isolationUp to 1600; waveform, duration and continuous working-voltage conditions not established by the cited installation page V
RAMNone; flip-flops only
Condition & included items

What the actual unit includes

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Condition

Confirmed per unit.

Included

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Revision

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Compatibility

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National Instruments

Manufacturer

IEEE 488 / GPIB

Instrument-control bus

GPIB-120A

Bus isolation and expansion

Confirm model-specific isolation conditions, power requirements and bus limits before integration; do not treat the isolation figure as a continuous working-voltage rating.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

Installing NI PCMCIA-GPIB ControllersInstallation Guide With GPIB-120A Isolation Reference · ni.com
Open →
Getting Started with Your GPIB-SCSI-A and NI-488.2 for Solaris and SpecificationsArchived Manual With GPIB Expansion Reference · docs-be.ni.com
Open →
NI Memory Buffer of GPIB InterfacesTechnical resource
Open →
Shipping, warranty & returns

Commercial terms

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Shipping
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Warranty
30-Day Warranty. Standard coverage applies.
Returns
30-Day Returns. Return policy applies.
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

What is the GPIB-120A used for?

It provides isolation and expansion for GPIB instrument systems.

Does the GPIB-120A contain RAM?

NI's memory-buffer reference lists no RAM for the GPIB-120A, only flip-flops.

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