TOFp System Procedure:
TOFp/pVPD Remote Threshold Systems Power On or Off


   Description:
This is the procedure to turn on or off the Remote Threshold System for the TOFp and pVPD detectors. This system provides over long cables the precision low voltage level used on the TOFp Systems FEE boards. There are thus three control paths, one each for the two pVPDs and one for the TOFp tray.
   Related Documentation:
  1. TOFp Glossary
  2. TOFp NPS Tutorial
  3. Threshold System Description
   Requirements:
  1. Notification and Approval of TOFp Group.
  2. Access to STAR Subnet.
  3. Password Information (posted at TOF Station in STAR Control Room).
   Procedure:
  1. Open the TOFp NPS Tutorial in a browser window for reference.
  2. From any terminal window, make a telnet connection to tofpnps.star.bnl.gov  (130.199.88.47). The password is posted at the TOF Station in the Control Room.
  3. You are now logged into the TOFp Network Power Switch.
  4. Enter
         /S
    to display NPS Plug names and status.
  5. Locate in this listing the names "ThreshSys". Identify the plug number: 3

    6. THRESHOLD SYSTEM ON

  6. Enter
         /on 3,y
    to turn on Plug 3, which powers up the Threshold System.
  7. Enter /S to check action completed, then /x to exit the communication w/ the NPS unit.
  8. Note the action in the Shift Log Book.

    9. THRESHOLD SYSTEM OFF

  9. Enter
         /off 3,y
    to turn off Plug 3, which powers down the Threshold System.
  10. Enter /S to check action completed, then /x to exit the communication w/ the NPS unit.
  11. Note the action in the Shift Log Book.

   Testing:
N/A
   Completion:
  1. Contact TOFp Control to inform that procedure is complete, and with any end-of-procedure comments that are necessary.
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