[time-nuts] 3GHZ Extender for HP 53131A and 53132A

Richard Karlquist richard at karlquist.com
Fri Nov 8 22:42:25 EST 2013


On 2013-11-08 18:07, Peter Gottlieb wrote:
> Maybe he means fixed vs. automatic gain (or threshold)?  Perhaps a
> worry about picking up higher frequency noise on a lower frequency but
> larger signal you are looking to measure?
> 
> Peter

The problem is the opposite.  Low frequency noise will wipe
out measurement of high frequency signals.  They used to test
the 5334A/B above 1 GHz by driving it with an HP 8660 followed
by a 1 GHz high pass filter.

Rick


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