[time-nuts] [OT] Agilent 54845A attenuator maintenance / repair?

[Peter Loron]

Ok, everybody who (politely!) suggested I needed to engage my brain were right. By switching the triggering channel, I am getting a pretty clean signal.

However, the Autoscale still fails to find the signal.

I'm going to look into the calibration routines, but since the values which are being measured on the scope are pretty close to what they should be, I don't think this is it...

Thanks!

-Pete
On Feb 7, 2010, at 1:38 AM, Gerhard Hoffmann wrote:

> Peter Loron wrote:
>> When I look at input (a 19.44MHz xtal in this case), input #1 is good, except that the horizontal displacement of the trace flickers occasionally. On the other three inputs, the trace jumps around horizontally. Video of the display is here:       http://standingwave.org/54845a.m4v
>>  
> Unless the movie has been edited, you have forgotten to set the
> trigger source to channel 2 after moving the cable.
> 
> regards, Gerhard
> 
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