On 5/4/21 10:07 AM, Ralph Mowery wrote:
In article , says...

Thank you and the others here! The scope seems fine. I was finally
able to find out what happened to the square wave test peg. It
dislodged during shipping. Reattached and a nice 2V PP 1 Khz square wave.

Phil, what you said was confirmed. If I input the signal generator and
set for say 10 Mhz, the frequency and amplitude are spot on.



Glad the scope checked out for you.

As far as the scope showing 2 or 3 waves at 30 MHz instead of one, that
is probably normal. I checked out my Tecktronics 465B scope which is a
100 MHz scope and with the 10x button pushed in it shows several waves
instead of just one at 100 MHz.

I think Phil mentioned it tht a scope is usually spected at a 3 db or
some other figure down at the rating. Just like the 30 MHz scope has
mostly full specs at 10 and not 30 MHz but is usuable to 30 and maybe
some what more to look at waveforms. Then there is that square wave
vers sine wave where you need a lot higher rated scope to show a true
square wave than a sine wave.



Well, I know the thread has been kindly answered and discussed now,
thanks mostly to Phil and you, I did want to tag on another question
while I was at it: is there any way to determine when this scope might
have been made? As mentioned, it is the Elenco S-1325. To my surprise,
it apparently is still being made but who knows for how long. Just a
curiosity more than anything else. Certainly seems clean enough.

Thanks once again guys.