40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Wed Oct 10 20:27:40 2012, Den, Update, IOO, MCL, WFS triggers MC2_POS.pngmcl.pdf
    Reply  Thu Oct 18 03:45:56 2012, Jenne, Update, IOO, MCL, WFS triggers 
       Reply  Thu Oct 18 12:02:32 2012, Den, Update, IOO, MCL, WFS triggers 
          Reply  Fri Oct 19 01:11:18 2012, Jenne, Update, IOO, MCL, WFS triggers 
Message ID: 7575     Entry time: Thu Oct 18 12:02:32 2012     In reply to: 7572     Reply to this: 7578
Author: Den 
Type: Update 
Category: IOO 
Subject: MCL, WFS triggers 



 I've redone the WFS triggers.  I left the MCL trigger alone (for now....I'll come back to it). 

The trigger was setup such that (a) it was totally unclear what was going on, by looking at the WFS screen.  Koji and I spent some time confused before I remembered that Den did this work recently.  Also, for some reason, the triggers were just plain thresholding, not a schmidt trigger, so any time the cavity flashed, the WFS came on.  Since the cavity can flash before the mcdown script has a chance to turn off the WFS servos, the outputs of the WFS filters are trying to output thousands of counts, and the signal goes through any time the cavity flashes.  Not so good.

 Your schmitt trigger has 2 threshold values - min and max. Set thresholding value in my trigger to the max of your schmitt trigger and you get the same behavior for MC,  triggers are not supposed to turn anything on in this realization as they do for locking with flashing.

ELOG V3.1.3-