[time-nuts] 5370A

[Greg Burnett]

Joe - When you manually set the trigger level pots to the center of the 
triggered range (as indicated by flashing trigger LED), does your digital 
display indicate trigger levels near zero volts? That is what's important - 
and what might be way off if you have DC bias problems in the front-end. If 
you have that problem, typically it will be in one channel only, although it 
could of course be in both.

Greg


----- Original Message ----- 
From: "Joseph Gray" <jgray at zianet.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Saturday, October 10, 2009 12:42 PM
Subject: Re: [time-nuts] 5370A


Greg,

I did your test and at the 12 o'clock position, both levels read
-0.32V. Zero volts is at about 1 o'clock. With the attenuator switched
in, the range on the pots is fairly sharp.

Thanks for the tip. I'll add the  DC bias adjustment to my list.

Joe Gray
KA5ZEC