![background image](http://html1.mh-extra.com/html/racal-instruments/1256e/1256e_manual_3132597075.webp)
1256E User Manual
Racal Instruments
©
2002
Computer Interfaces 4-11
•
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 4-2,
Connecting 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.