[time-nuts] HP 58503A

Christoph Kopetzky dekagoon at gmail.com
Fri Aug 3 19:12:27 UTC 2012

Hal Murray <hmurray at ...> writes:

> dekagoon at ... said:
> > with my analog scope (Hameg HM2005-2) I can trigger a low level voltage
> > spike signal with  a p-p voltage of 30 mV and a frequency of 52,6 kHz. Could
> > that be real? The signal level is very low, 30 mV... 
> That sounds like junk pickup.  My guess would be from a switching power 
> supply.
> Any real signal that I've seen is at least several volts.

Hal, you are very right,

in the meantime I found that the junk came over the serial connection from my 
notebook to the 58503A...



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