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© National Instruments Corporation
5-1
GPIB-VXI User Manual
Chapter 5
Diagnostic Tests
This chapter contains information for executing the GPIB-VXI diagnostic self-tests. The
diagnostics test each GPIB-VXI sub-circuit, so they are useful in detecting and localizing
problems.
To access the diagnostics mode, start the system with startup mode switches 8 and 7 set to
ON
and
OFF
, respectively, as described in the
GPIB-VXI Startup Mode Configuration
section of
Chapter 2. Development modules can enter the diagnostics mode from pROBE using the
pROBE
Diag
command. Diagnostic execution is controlled through a terminal connected to the
serial port.
Configuration for Diagnostic Testing
The diagnostic tests require the GPIB-VXI to be disconnected from all other GPIB devices to
prevent interference with the GPIB tests.
Diagnostic Test Structure
A total of 126 diagnostic routines, or
steps
, are organized as nine tests, as shown in Table 5-1.
Each step is composed of one or more subroutines called
commands
.
Table 5-1. Diagnostic Tests
Step Numbers
Test Name
Test Number
From
To
EPROM
1
1
2
RAM
2
3
6
68070 CPU
3
7
21
VXI Configuration Registers
4
22
33
Local
Interrupts
5
34
86
GPIB
6
40
86
DIP Switch and Trigger
7
113
114
(Interactive)
DMA
8
115
125
68881 Coprocessor
9
126
126