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Chapter 3
Configuration and Installation
This chapter describes the configuration and installation of the GPIB-SBX.
Configuration
The GPIB cable shield is usually connected to ground at only one point on the IEEE-488 bus,
and that point is usually at the System Controller. A jumper is provided on the GPIB-SBX for
connection of the GPIB cable ground to the SBX bus digital logic ground.
Connect E2 to E3 to short the GPIB cable shield to the SBX bus digital logic ground. Connect
E1 to E2 to leave the GPIB cable shield unconnected. Select one configuration depending upon
whether or not the GPIB-SBX is the GPIB System Controller and whether or not the shield is
grounded elsewhere. Figure 3-1 shows the two possible configurations.
Installation
The GPIB-SBX is installed on a host board by means of the SBX connector and a nylon spacer
provided in the interface kit.
Warning:
Never attempt to install the GPIB-SBX on a host board that has power applied to
it. Serious damage to the GPIB-SBX, the host board and the computer can result.
It is recommended that you remove the host board from the computer bus
according to the computer manufacturer's instructions before attempting to install
the GPIB-SBX.
© National Instruments Corporation
Cable Shield
E1
Open
E2
GND
E3
•
a. Isolate Shield
From GPIB-SBX
Figure 3-1. GPIB Cable Shield Grounding
3-1
Cable Shield
•
E1
Open
E2
GND
E3
b. Ground Shield
To GPIB-SBX
GPIB-SBX User Manual
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