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National Instruments Corporation
5-1
5
Diagnostic Tests
This chapter contains information for executing the GPIB-VXI/C
diagnostic self-tests. The diagnostics test each GPIB-VXI/C subcircuit and
are useful in detecting and isolating problems.
You can enter diagnostics mode through either of the following methods:
•
Set the startup mode switches to the diagnostics mode as described in
the
GPIB-VXI/C Startup Mode Configuration
section
of
Chapter 2.
For this mode, set switch S19 to the
ON
position and set switch S20
to the
OFF
position. Restart the system.
•
In 488-VXI runtime system mode, you can enter the diagnostic mode
through the
DIAG
command.
The diagnostic commands must be executed from the RS-232 port.
Configuration for Diagnostic Testing
The diagnostic tests require the GPIB-VXI/C to be disconnected from all
other GPIB devices to prevent interference with the GPIB tests.
Diagnostic Test Structure
A total of 263 diagnostic routines, or
tests
, are organized in groups as
shown in Table 5-1. Each test is composed of one or more subroutines
called
commands
.
Each test is designed to functionally test a specific part of the GPIB-VXI/C
circuitry. You can execute the diagnostics by test groups or by individual
tests.
