[time-nuts] Noisy varactor diodes

[Ed Palmer]

What are the horizontal and vertical settings for that picture?

Ed

On 12/18/2012 12:29 PM, cdelect at juno.com wrote:
> I was recently repairing a noisy A3 module for an HP 5065A.
>
> The phase modulator has 4 varactor diodes in parallel.
>
> Since I suspected a diode, I removed them one at a time.
>
> Of course it was the last one! Must be a universal rule there!
>
> Anyway here is a PIX of the noise with the diode reverse biased at 20
> volts.
>
> Anybody know where to get an MV840 ???
>
> Thanks,
>
> Corby