[volt-nuts] Fluke 8502A
rob.klein at smalldesign.nl
Fri May 7 15:13:46 UTC 2010
Well, that's quite something different than what I understood from your
first post, where you were talking
about "step 3" in the manual. But clearly, since you now say it
recognises the firmware version and modules,
then proceeds to display some -erroneous- value, something else is going on.
You should go through the procedure and take a turn at step 4, rather
than 3. This leads you to step 59
(or at least it does in my version of the manual (rev 1 7/81). Since
you've already established that the supply
voltages are in spec and since you do not have the mythical
Interconnect-Monitor PCB, I would follow
the steps from 70 onwards, to check all the analogue modules. If those
are OK, you most probably have
a defective isolator.
steve gunsel schreef:
> I have removed the 3 optional plug-in boards and that does not help.
> There are 6 plug-ins that must be plugged in.
> I checked the power supply voltages and they are all in spec.
> When powered up, it ...
> Recognizes the software (3.0.0, newer than that in the manual);
> Recognizes the optional plug-ins, when plugged in;
> Displays 112.94 VDC with the inputs shorted, but this changes with
> different ranges.
> AC volts behave similarly.
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