need HP 1200 scope manual

Following up on my own thread (thanks to someone who responded privately):

It's pretty simple inside, and like all HP gear of the era, designed to be serviced. So it was no problem to find the open resistor in the power supply, replace it, and I'm up and running! I was able to calibrate the timebase and vertical gain without a manual, but I'm reluctant to do anything to the attenuator compensation, etc. - basically, anything involving a trimmer cap. But it's in pretty good shape even without that. Probably could use some contact cleaner on the selector switches. Traces are nice bright blue.

It's an interesting instrument. Both channels have differential input, each leg separately switchable AC/DC/off. And although bandwidth is only 500kHz, it will go down to 5 sec/div, and phosphor persistence is long enough to make that worthwhile. All in all, it should be a useful addition to the stable. Maybe I won't give it away quite so soon after all :-)

Hi,

I've had a 1200 on my bench for years. It's been 100% reliable (good thing, since I have no manual). I use it whenever I need the sensitivity or when I want to remind myself how sharp a good analog scope trace can be.

Alan

You mean Donny Lancaster could be w... I mean, wr.... I mean NOT RIGHT when he says HP scopes are worthless and won't trigger for squat? DON LANCASTER, Wrong??? Say it isn't so!!!

The last decent scope HP ever built was the 130-C. It has been downhill ever since.

So as long as I want to trigger on the negative edge, I should be fine, right? ;-)