Gpib Operation - Keithley 2657A Reference Manual

Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation

GPIB operation

This topic contains information about GPIB standards, bus connections, and primary address
selection.
GPIB standards
The GPIB is the IEEE-488 instrumentation data bus, which uses hardware and programming
standards originally adopted by the Institute of Electrical and Electronic Engineers (IEEE) in 1975.
The instrument is IEEE Std 488.1 compliant and supports IEEE Std 488.2 common commands and
status model topology.
Connect the GPIB cable
To connect an instrument to the GPIB bus, use a cable equipped with standard IEEE-488 connectors,
as shown below.
Figure 27: GPIB connector
To allow many parallel connections to one instrument, stack the connectors. Each connector has two
screws to ensure that connections remain secure. The figure below shows a typical connection
diagram for a test system with multiple instruments.
CAUTION
To avoid possible mechanical damage, stack no more than three connectors on any one instrument.
To minimize interference caused by electromagnetic radiation, use only shielded IEEE-488 cables.
Contact Keithley Instruments for shielded cables.
2657A-901-01 Rev. B/December 2012 2-83