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HP 8114A Service Manual

HP 8114A
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HP 8114A Service Guide
I
loss of frequency reference to test submodule
Normally a reset would be caused by an external
signal or by the CPU executing a reset instruction
Internal Serial Device Bus failed
Internal Serial Device bus traffic over the feedback
bus has failed
Signal Boards
Selftest
This section in the
Selftest
facility tests the Output Board and then
the Timing Board.
It,
is not automatically run at power-up. You can
start. this part of the
Selftest
routine as follows:
1.
2.
3.
4.
5.
6.
Switch the instrument ON
Wait for the Microprocessor
Selftest
to finish
Press (MORE) and
CONFIG
1Jsing
the cursor keys move the highlight down to
Perform Self test
Using the knob, select Signal
Press
(ENTER)
Timing Board
Selftest
Figure 5-1 shows the
Selftest
points on the Timing Board. This is
followed by a list of the possible failure messages.
TP:
TST-DELTIGIN
TST-WDTIGIN
TST-PULSEOUT-N
TRIGGER OUT
/’
I
*’
I
TRIGOUTN
L------W
Figure 5-l.
Testpoints
used in Timing Board
Selftest
Troubleshooting
5-3

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HP 8114A Specifications

General IconGeneral
BrandHP
Model8114A
CategoryInverter
LanguageEnglish

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