1256 User Manual Publication No. 980855 Rev. A
GPIB and RS-232 Interfaces 4-2
EADS North America Test and Services
GPIB cables are available in two lengths:
•
GPIB Cable, 1 meter (3.28 ft.)
P/N 500310-001
•
GPIB Cable, 2 meters (6.56 ft.)
P/N 500310-002
To use the IEEE-488 (GPIB) interface with the 1256 Switching
System, you also need a computer equipped with a GPIB
controller.
GPIB Cabling
Guidelines
Adhere to the following guidelines to maximize the data transfer
rate of the GPIB system:
•
Total cable length of no more than 20 meters (65.6 feet).
•
Maximum separation of 4m (13.2 feet) between devices.
Average separation of no more than 2 meters (6.6 feet).
•
Maximum of 15 devices (including controller) connected
to the bus.
Connecting the
GPIB Cables
Use a GPIB cable to connect the rear-panel GPIB connector on
the 1256 to the GPIB port of the host computer. Refer to
Figure 4-
1, Using the GPIB Interface
.
CAUTION:
Avoid stacking more than three cables on any single
connector. If the stack is too large, side forces may damage
the connector mounting.
CAUTION:
Tighten the locking screws finger-tight on each connector. Do
not over-tighten.
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