GPIB-120A

National Instruments GPIB-120A GPIB BUS Expander/Isolator
Features

• Expands the Number of GPIB Devices to 28
• 1600 V Electrical Isolation Between GPIB Systems
• Bidirectional Expansion - Controllers, Talkers, and Listeners Can Exist on Either Side
• Software Transparent - No Software Modifications Required
• Built-In 120 or 240 VAC Power Supply
• Signal Buffering Extends the Maximum GPIB Cable Limit to 40m (Device Load Every 2m of Bus Cable)

The National Instruments GPIB-120A is a high-speed bus expander that connects 2 GPIB (IEEE 488) bus systems. This expander increases the maximum number of GPIB system devices from the IEEE 488.1 standard of 15 electrical device interface loads to 28. The GPIB-120A provides an electrically isolated interface to one or more devices making it useful in test and measurement systems. The GPIB-120A is software transparent and extends the GPIB by effectively doubling the 20 m cable limit.