Look to be sure you have switched to internal sweep, switch settings are good to double check.
Dennis
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On Sat, 10/7/17, andremajic@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] HP AN/USM 281A Oscilliscope needs repair (San Antonio TX)
To: hp_agilent_equipment@...
Date: Saturday, October 7, 2017, 11:45 AM
Hello all,
I am completely new to oscilliscopes,
and I just acquired one of these for free, since it was not
working. Cool thing is that the technical manual is
downloadable and the user manual as well, since this is a
military unit.
Now the rub: I have never used an
oscilliscope, and might not ever use one, however I'm
learning electronics repair and my Dad is telling me that
this could be an invaluable piece of troubleshooting
equipment. Another problem is that you normally need a
couple things to troubleshoot an oscilliscope, such as a
frequency generator and - another
oscilliscope.
I've used the flow chart on the
technical manual and it appears that the horizontal signal
board needs to be repaired. The CRT projects a beam only
when I press the TEST button and only vertical adjustments
are possible. Horizontal adjustments while holding the
test? button down do nothing.
Anyone in the San Antonio TX area
willing to help a newbie out? I work long hours (3am - 8pm
mostly) so the time I get off is usually weekends.
