[Test-Equipment] HP 141T spectrum analyzer question

[J. Forster]

greg mijal wrote:

> However,  the straight line trace at the bottom of the screen is no longer
> flat.  It has a series of bumps in it and they walk accross the screen while
> the analyzer is scanning. ..........

Try varying the sweep time and see if the bumps move at a differrent rate. It
smells like a filter cap that has dried out, has reduced capacity, and is
causing ripple on a power supply to me.

FWIW,
-John