Shield Ground Configuration; Step 2 - Software Configuration; Figure A-10. Ground Configuration Jumper Settings - National Instruments GPIB-PCII Getting Started

Changing Hardware and Software Configuration Settings

Shield Ground Configuration

The GPIB-PCII/IIA is set at the factory with the jumper in place to connect the
logic ground of the GPIB-PCII/IIA to its shield ground. This configuration
minimizes the EMI emitted from a PC equipped with a GPIB-PCII/IIA.
However, if your application requires that logic ground be disconnected from
shield ground, remove the jumper (W1) and place it across only one of the
jumper pins. Jumper settings for logic ground connected and disconnected from
shield ground are shown in Figure A-10.
a. Connect Logic Ground to Shield Ground (default)
b. Disconnect Logic Ground from Shield Ground

Figure A-10. Ground Configuration Jumper Settings

Step 2 - Software Configuration

Any hardware setting changes must be matched by making appropriate changes
to the NI-488.2 handler. To accomplish this, you must run the configuration
utility, IBCONF, and edit the board parameters (such as the base I/O address or
interrupt line) that you have changed. Refer to Chapter 2 of the NI-488.2 MS-
DOS Software Reference Manual for instructions on running IBCONF.
PCII/IIA and NI-488.2 MS-DOS
W1
•
W1
A-20 © National Instruments Corp.
Appendix A