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Any Tektronix 492 Owners out there?

Hi,

I've restored a 492 back to life after re-building the power supply. The analyser seems to work except I'm not sure about the Time/Div control. When I set time/Div to Auto, the unit seems to work fine with the sweep rate changing as I adjust Bandwidth Resolution. If I set Time/Div manually the display looks normal except there is an exact replica of the wanted signal to the left of the display as I adjust the centre frequency these two signals merge then cancel out. Is this normal behaviour?

I have service manuals Vol 1 & 2 , was there also a separate instruction manual for this instrument.

Any advice or personal experience with these instruments would be welcomed.

Many thanks,

Philip

Reply to
Electric dabbler
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Mine does not do seem to do this. Display looks plausible at all sweep speeds. I leave auto resolution on when switching the time base manually.

T> Hi,

Reply to
canthony15

Hi Tony,

Many thanks for your reply, looks like I've got some fault-finding to do.

thanks,

Philip

Reply to
Electric dabbler

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