Hybrid Testing Status - PowerPoint PPT Presentation

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Hybrid Testing Status

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Hybrid Testing Status Lance Simms 6/22/04 With old software things were okay Opens, shorts, and noisy channels detected Automatic XML uploading Cuts adjustable ... – PowerPoint PPT presentation

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Title: Hybrid Testing Status


1
Hybrid Testing Status
  • Lance Simms
  • 6/22/04

2
With old software things were okay
  • Opens, shorts, and noisy channels detected
  • Automatic XML uploading
  • Cuts adjustable from configuration files
  • Manual mode ARCS available for hardware
    troubleshooting
  • Automatic report.txt file uploading to local
    database (UCSB only)

3
But pretty ghetto for the most part
  • Hybrids that failed at -20 a mystery simply
    swept aside.
  • XML files contain only
  • -Flagged channels -Pedestal
  • -Operator -Noise
  • -Test Script used
  • -Tool ID
  • -Date/Time of test

4
Even worse
  • False channel identification for six-chip hybrids
    (only seen in three cases)
  • TESTWITHPA_val held at 0 regardless of test
    outcome
  • Only two grades PASS / FAIL
  • One or more shorted channels OR five or more
    noisy OR open channels -gt Hybrid fails

5
Now Underlying DAQ library can be compiled
Microsoft Visual C 6.0 or higher required
6
Latest Teststation version in use at CERN is now
operational and modifiable
  • Labview source code can be changed and recompiled
    into an executable file
  • Allows UCSB/FNAL specific adjustments such as
    readout of air/water flow sensor in ACDC
  • MUX, PLL, DCU, etc. are now accessible through
    C/labview interface

Not possible with code currently in use at UCSB
FNAL dll source was not available
7
Features of New Software
  • PLL status check
  • PLL Forcing (If necessary)
  • Drifting Pedestal Check
  • New Hybrid Grading A/B/Fail
  • XML generation (Not automatic yet)
  • Manual mode disabled

8
PLL Failure? Take those old hybrids off the shelf
  • Initialization now talks to PLL
  • Reads bit 0 of PLL Control and Status register 1
  • 1 if PLL is going
  • the norm after reset sequence
  • PLL operation is controlled by auto calibration
    circuit
  • 0 if PLL is not going
  • Occurs at -20 C
  • Requires PLL forcing PLL operation is
    controlled by I2C interface
  • Hybrid will initialize in cold

9
PLL comment in report XML file
Slight problem For some reason pedestal and
noise have increased edges with new
software. Probably something simple.
10
Open Vias should be found
  • Final report vi compares the average pedestal
    for each APV between tests
  • If pedestal drifts, comment will be made in
    report.txt and XML file

11
New Grading Agreement with CERN
  • "TIB_P_4D", "TOB_P_4U".."TOB_S_4D", "TEC_4U"
  • 0-2 noisy or open channels "A" hybrid
  • 3-4 noisy or open channels "B" hybrid
  • 5 noisy or open channels Failed
  • One or more shorted channels Failed
  • "TIB_S_6U".."TID_S_6D", "TOB_P_6U", "TEC_6U",
    "TEC_6D"
  • 0-3 noisy or open channels "A" hybrid
  • 4-6 noisy or open channels "B" hybrid
  • 7 noisy or open channels Failed
  • One or more shorted channels Failed

New code still allows for only one channel to be
flagged as short. A consensus should be made as
to what constitutes a short.
12
XML Generation
  • Bruno Wittmer (teststation architect) is person
    associated with XML files
  • XML files output by new software should contain
    everything in old files
  • Comments on PLL Drifting Pedestal
  • TESTWITHPA_val indicating grade of hybrid
  • Automatic uploading will be added

Still have not successfully generated XML file
with new code
13
Additions to Code
  • CVS repository at CERN contains all updates
  • http//cms-project-cmstobss.web.cern.ch/cms-p
    roject-cmstobss/
  • CVS tools available in linux and Windows,
    making updating easy
  • US can contribute
  • Documentation http//cmsdoc.cern.ch/cmsoo/proje
    cts/cvs_server.html

14
Equipment
  • One spare peltier in US
  • Ours has failed due to overheating once
  • ARC boards (Ask Tony)
  • One spare crate at UCSB (belongs to
    Fermilab/going to Mexico City)
  • NIM modules (1 of each used in pulser)
  • Spare humidity temperature sensors
  • 2 peltier power supplies
  • No spare chiller (Perhaps one should be
    purchased)

15
Documentation AOB
  • Documentation on ARCS, ACDC, XML files, etc. will
    be collected, organized, and posted on web
  • Side by side updating of code at UCSB and Fermilab
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