HP 8114A Service Guide
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
This section in the
facility tests the Output Board and then
the Timing Board. is not automatically run at power-up. You can
start. this part of the
routine as follows:
1.
2.
4.
5.
6.
Switch the instrument ON
Wait for the Microprocessor
to finish
Press (MORE) and
the cursor keys move the highlight down to
Perform Self test
Using the knob, select Signal
Press (ENTER)
Timing Board
Figure 5-1 shows the
points on the Timing Board. This is
followed by a list of the possible failure messages.
T P :
TRIGGER OUT
Figure 5-l.
used in Timing Board
Troubleshooting
