From wagner@fnal.gov Fri Nov  9 12:40:28 2001
Date: Thu, 08 Nov 2001 17:36:20 -0600
From: Bob Wagner <wagner@fnal.gov>
To: Evelyn Thomson <thomsone@fnal.gov>, Avi Yagil <Yagil@fnal.gov>,
     dittmann@fnal.gov, Greg Veramendi <mendi@cdfsga.fnal.gov>,
     joao <guima@fnal.gov>, Peter Tamburello <tamburello@fnal.gov>,
     Robyn Madrak <madrak@fnal.gov>, Aseet <mukherjee@fnal.gov>,
     Ayana <holloway@physics.harvard.edu>, Bill Robertson <Robertson@fnal.gov>,
     Eiko <eikoyu@fnal.gov>, JC Yun <yun@fnal.gov>,
     Ken Schultz <kschultz@fnal.gov>, Kevin Burkett <Burkett@fnal.gov>,
     Kevin Pitts <kpitts@fnal.gov>, Kirby <kirby@fnal.gov>,
     Marina Brozovic <brozovic@fnal.gov>, Morris <Binkley@fnal.gov>,
     Ting <tmiao@fnal.gov>, Tom Phillips <phillips@phy.duke.edu>,
     Young-Kee <ykkim@fnal.gov>, Dave Ambrose <ambrose@fnal.gov>,
     Nigel Lockyer <lockyer@fnal.gov>, Bill Orejudos <orejudos@fnal.gov>,
     Peter Wittich <wittich@higgs.hep.upenn.edu>
Subject: COT 11/8 day shift work


    [ Part 1, Text/PLAIN (charset: ISO-8859-1 "Latin 1 (Western Europe)")  ]
    [ 38 lines. ]
    [ Unable to print this part. ]

    [ The following text is in the "iso-8859-1" character set. ]
    [ Your display is set for the "US-ASCII" character set.  ]
    [ Some characters may be displayed incorrectly. ]

 COT work on 11/8 Day shift:
 
   SL4-226 (D,579,18-17-3): 12 dead, 00 hot!, 00 warm, 00 null
   SL4-227 (D,579,18-17-3): 09 dead, 03 hot!, 00 warm, 00 null --> 2 HVD 
1 TRK
 
      --> OWL: Needs a CV jumper to ASDQ.
-->Installed missing jumper from CV to ASDQ.  Checked all signals on 224,
225, 226, 227 and all looked normal, except that 227 - 0, 2, 3, 4, 5 had
a double pulse due to the removed 300 ohm resistors on the HVDB.
 
   SL5-004 (A,018,10-12-2): 00 dead, 12 hot!, 00 warm, 00 null
   SL5-005 (A,018,10-12-2): 00 dead, 11 hot!, 01 warm, 00 null
 
      --> OWL: Has developed noise during shutdown.  Haven't looked yet.
-->Spy: This afternoon, pulses all looked normal and there was no noise. 
Before using Spy, I checked that the microcoax was not pinched on the
face beneath the NMR probe, and nothing looked odd.  I may have slightly
moved cables in the area.
 
   SL6-178 (B,361,05-15-1): 00 dead, 00 hot!, 00 warm, 08 null
   SL6-179 (B,361,05-15-1): 00 dead, 01 hot!, 01 warm, 07 null
 
      --> OWL: Null noise, probably from crossed wire 179#05, low DTH.
-->Spy: Now looks ok.  After noting that the 20ns early, ragged 179-05
pulse was still there, I looked at the calibration pulse and saw an
abnormal and ragged reflection at about120ns, instead of the usual nice
sharp reflection at 150 - 160ns.  Morris and I then examined the
microcoax all the way back to the Repeater.  The only odd thing was that
the Repeaters were tilted hard against each other at the microcoax end
(not an unusual occurance which often leads to shorted calibration
lines).  We separated the cards with a cable tie and looked again with
Spy.  Everything was then normal, including 179-05 and the Calibration
pulse.  We could not get the problem to come back by re-squashing the
cards or wiggling the cable.  A tounge depressor piece was left wedged
between the cards to insure separation in the future.