Slow Clock - HP 1660CS-Series User Manual

Preprocessor Problems

Slow clock

Slow clock
If you have the preprocessor interface hooked up and running and observe a
slow clock or no activity from the interface board, the +5 V supply coming
from the analyzer may not be getting to the interface board.
To check the +5 V supply coming from the analyzer, disconnect one of
the logic analyzer cables from the preprocessor and measure across pins
1 and 2 or pins 39 and 40.
•
If +5 V is not present, check the internal preprocessor fuse or current
limiting circuit on the logic analyzer. For information on checking this fuse
or circuit, refer to the HP 1660C/CS Logic Analyzers Service Guide.
•
If +5 V is present and the cable connection to the preprocessor appears
sound, contact your nearest Hewlett-Packard Sales Office for information
on servicing the board.
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