Hello,

I have a Tektronix 465 analog scope and it works wonderfully for viewing =
periodic signals.  I've now come to the point where I need to view a =
40kHz square wave that lasts for only three periods (and thus is =
non-periodic).  I can set the scope to single sweep mode and get it to =
trigget on the first rising edge, but the signal disappears far to fast =
for me to analysis it.  Turning the time base down doesn't help as the =
width of the signal shrinks in proportion.

Is there any way to use an analog scope to view this waveform? Would a =
digital scope solve my problem (I could at least try and capture the =
screen with a digital scope)?  What do others do when trying to observe =
non-periodic waveforms?

Thanks,
Donovan

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