G
gcd
Guest
Hi,
I have two of these old monsters and needless to say they have faults.
I'm hunting some uselfull service info, ie schematics of the analogue /
digital board and parts cross references for the hp parts. The hp service
manuals i have yield little info and only schematics for the PSU.
One scope will not trigger on ch 2 and produces an interpolator fault. Ch2
displays fine
The other fails the ch2 rt/rr tests - does display ch2 but the offset is
incorrect. I have to manually offset by 1/2 scale to see the waveform. could
be a cal issue?
They seem to me to be related faults, as the interpolator and the offsets
are ( i think) related in circuitry. perhaps a common type of fault with
these?
Can anyone help?
Thanks
Greg
--
gcd (delete everything else) A.T. austarmetro.com.au
I have two of these old monsters and needless to say they have faults.
I'm hunting some uselfull service info, ie schematics of the analogue /
digital board and parts cross references for the hp parts. The hp service
manuals i have yield little info and only schematics for the PSU.
One scope will not trigger on ch 2 and produces an interpolator fault. Ch2
displays fine
The other fails the ch2 rt/rr tests - does display ch2 but the offset is
incorrect. I have to manually offset by 1/2 scale to see the waveform. could
be a cal issue?
They seem to me to be related faults, as the interpolator and the offsets
are ( i think) related in circuitry. perhaps a common type of fault with
these?
Can anyone help?
Thanks
Greg
--
gcd (delete everything else) A.T. austarmetro.com.au