[Test-Equipment] HP 403B pegging meters

[w8au at sssnet.com]

At 08:46 AM 3/13/2008, Grant, Ken wrote:
>I thought that the pegging meter phenomenon was a sign that the 
>instrument was broken.
>So, I disconnected the original meter ( 100 uA FSD ) and, in its 
>place, hooked up an
>external 0-500 uA meter. The external meter would go over to about 
>400 uA on power-up,
>settle towards zero after a few seconds, then do it again before 
>finally zeroing.
>This seems to be normal.

Ken:

As pointed out in earlier postings, this is not a problem.  The meters will
withstand 1000% overload without damage (even though to our eyes it looks
abnormal).   In that you've shown that the surge is 400%, this is well within
the normal safety specs for the meters.

"Don't worry, Be Happy!"  as the song goes...  :-)

Perry   w8au