Switching On - HP 8112A Operating, Programming And Servicing Manual

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Switching On

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Figure 4-1. HP 81 12A Front Panel
All
The HP 81 12A performs a "self test" when the power is switched
on. the front panel LEDs should light momentarily. If a fault is
detected, the word "ERROR" is illuminated and an error code is
displayed on the front panel digital display. The possible error codes
are:
CJ
A key is stuck in the depressed position.
Fail RAM test
E01
Fail Period Timing test
E 1 1
Fail Delay Timing test
E12
Fail Width Timing test
E13
Fail Slope Generation test
E14
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