Re: 25 MHz hisotgram corrections

[Peter Kammel <kammel@npl.uiuc.edu>]

Dear Tom,

Please call me tomorrow in my office. I will phone to Alexei
at some point, but otherwise I am around.

I posted our email exchanges on
http://www.npl.uiuc.edu/exp/mucapture/coll/daq/maillist.html
for others to comment if they have any idea.

The description on the CERN micdigital page is interesting. It
explains how asynchronos pulse transitions *should* be correctly
sorted. If that does not work one would expect shifts of 1/clock=
40ns. Did you check different channels and CAEN modules?

With best regards

Peter

On Thu, 20 Mar 2003, Tom Banks wrote:

> 
> Hi Peter,
> 
> the 25 MHz plots which I sent you were produced with software designed
> for a 50 MHz external clock.  I changed the conversion factor in mu.f's
> make_caen to account for the 25 MHz clock, and I have attached the
> resultant plots which now have the correct timing.
> 
> Tom
> 

Peter Kammel  /  pkammel@uiuc.edu
Department of Physics, Loomis Laboratory
University of Illinois at Urbana-Champaign
1110 West Green Street, Urbana, IL 61801 
Tel (217) 333-5424 / Fax (217) 333-1215