This page is dedicated to the repair and/or modification of vintage test equipment.
I will also describes the circuits of some “landmark” equipment.
HP8562A Spectrum Analyzer Repair: Fixing Video Offset / Display Issues
My HP8562A has been in excellent condition for many years until one day when I powered it up, the displayed trace was weird. The whole spectrum display was shifted up, as in the above photo. Trying to display the built-in cal. signal further confirmed the problem. The photo below showed the 300MHz cal. signal, which…
From Hobby to Professional 