Gould OS300 20 MHz analog dual channel oscilloscope (top).
I bought it to complement my 100 MHz digitising oscilloscope (HP 54501A on bottom), it set me back £60 (included a free probe).
It does need some preventative maintenance though. The trace "wobbles" when the timebase is slow (and x10 is selected) possibly due to PSU ripple. The focus control works, but the best focus is 2mm diameter trace, and the front panel controls are very position sensitive (needs a good clean.)
Main reason I bought this was for portability and repairing plasma TVs which use +385V Vset voltages; this thing can withstand 400V (and measure up to 100V/div with the 10x probe I got with it.)
I do have the service manual for it in paper form.
I bought it to complement my 100 MHz digitising oscilloscope (HP 54501A on bottom), it set me back £60 (included a free probe).
It does need some preventative maintenance though. The trace "wobbles" when the timebase is slow (and x10 is selected) possibly due to PSU ripple. The focus control works, but the best focus is 2mm diameter trace, and the front panel controls are very position sensitive (needs a good clean.)
Main reason I bought this was for portability and repairing plasma TVs which use +385V Vset voltages; this thing can withstand 400V (and measure up to 100V/div with the 10x probe I got with it.)
I do have the service manual for it in paper form.
Attachments
-
242.9 KB Views: 69