Re: A possibly sick 7904A


Hey David

that is exactly what the signal was it was a fast rise at 1Khz.


On 8/17/2020 8:35 PM, David C. Partridge wrote:
Typically you need a faster repetition rate on your test signal for it to be bright at 500pS/div.

I'm guessing that you were using a fast rise pulse from a CG551AP or CG5001 or PG506 for calibration. If so this has a pretty low repetition rate compared to the time for a sweep at 500pS/div so it will be dim.


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