Chapter 6 6-19
Digital Control Troubleshooting
GPIB Failures
GPIB Failures
If you have performed “Step 3. GPIB Systems Check” on page 4-8, and you suspect there is
an GPIB problem in the analyzer, perform the following test. It checks the internal
communication path between the A9 CPU and the A16 rear panel. It does not check the
GPIB paths external to the instrument.
Press .
• If the analyzer fails the test, the problem is likely to be the A16 rear panel.
• If the analyzer passes the test, it indicates that the A9 CPU can communicate with the
A16 rear panel with a 50% confidence level. There is a good chance that the A16 rear
panel is working. This is because internal bus lines have been tested between the A9
CPU and A16, and GPIB signal paths are not checked external to the analyzer.
System
13 x1
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