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2308-900-01 Rev. A / July 2008
Section 6: GPIB Operation
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
Introduction
The GPIB bus is the IEEE-488 instrumentation data bus with hardware and programming
standards originally adopted by the IEEE (Institute of Electrical and Electronic Engineers) in 1975.
Model 2308 conforms to these standards:
• IEEE-488-1987.1
• IEEE-488-1987.2
These standards define a syntax for sending data to and from instruments, how the instrument
interprets this data, what registers should exist to record the state of the instrument, and a group of
common commands.
• SCPI 1995.0 (Standard Commands for Programmable Instruments)
This standard defines a command language protocol. It goes one step further than
IEEE-488-1987.2 and defines a standard set of commands to control every programmable aspect
of the instrument.
GPIB bus connections
To connect the power supply to the GPIB bus, use a cable equipped with standard IEEE-488
connectors. The IEEE connector on the power supply is shown in
Figure 6-1
.
Figure 6-1
IEEE-488 connector
For a multi-unit test system, you can daisy-chain the instruments to the controller by connecting an
IEEE cable from one unit to another.
Figure 6-2
shows a typical multi-unit connecting scheme
daisy chaining. Although any number of connectors could be stacked on one instrument's GPIB
port, avoid possible mechanical damage by not stacking more than three.
NOTE
To minimize interference caused by electromagnetic radiation, use only shielded
IEEE-488 cables. Available shielded cables from Keithley Instruments are
Models 7007-1 and 7007-2.
CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
LINE RATING
100-120VAC, 200-240VAC
50, 60 HZ 150VA MAX
LINE FUSE
SLOWBLOW
2.0A, 250V
IEEE-488
(ENTER IEEE ADDRESS
FROM FRONT PANEL MENU)
REMOTE
DISPLAY
OPTION
RELAY
CONTROL
24VDC MAX
IEEE-488 Connector
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