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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