NI GPIB Series User Manual

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Configure and Install Your GPIB-PCII/IIA
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34
Set the GPIB-PCII/IIA 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 EMI emissions.
Caution
The GPIB-PCII/IIA was tested for compliance with FCC and CE standards with the shield ground
connected to logic ground. Removing the jumper might cause EMI emissions to exceed the
applicable standards.
Most users do not need to change the shield ground configuration. If you feel you must disconnect
logic ground from shield ground, follow these steps:
1. Locate the shield ground jumper W1 on the GPIB-PCII/IIA. (View the GPIB-PCII/IIA Parts
Locator Diagram.)
2. Remove the jumper and place it across only one of the jumper pins, as shown in the following
figure.
Figure 5. GPIB-PCII/IIA Ground Configuration Jumper Settings
!
a. Logic Ground Connected to Shield Ground (Default)
b. Logic Ground Disconnected from Shield Ground
W1
W1

NI GPIB Series Specifications

General

Operating Systems Supported	Windows, Linux, macOS
Driver Software	NI-488.2
Bus Interface	IEEE 488
Data Transfer Rate	Up to 8 MB/s
Compatibility	IEEE 488.1, IEEE 488.2
Connector Type	24-pin IEEE 488 connector
Maximum Cable Length	20 m total system length
Number of Devices Supported	Up to 14 devices per bus