Jason Bowers wrote:
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After selling off a prior oscilloscope nearly two decades ago, I decided
to pick up another used one. I have forgotten most of the functions.
This is a used two channel 30 Mhz Elenco S-1325. I can return if it
fails my testing.

All I did so far use a coax t adapter between an RF signal generator and
a 50 ohm dummy load to channel the remaining side into one of the scope
channels. I then set it for 28 Mhz and 100,000 uV output. After some
fiddling, mainly because I forgot most functions, I finally got a nice
sine wave of the approximate frequency. What other functions might I
perform to make sure it is functioning ok?



** You need to buy or borrow a test oscillator, function or sine /square.
Then you check each setting of the controls, one at a time.
Square waves should look "square".

Vertical calibration can be checked with the help of any DMM on AC volts and a 400Hz sine wave.
Horizontal calibration really needs a frequency counter, but the 50/60 Hz supply is very accurate .

Make sure the "trace rotation" controlactually works.


...... Phil