Reports until 09:33, Tuesday 19 November 2024
H1 CDS
david.barker@LIGO.ORG - posted 09:33, Tuesday 19 November 2024 - last comment - 09:45, Wednesday 20 November 2024(81350)
h1susex powered down for DAC change

WP12201

Marc, Fil, Dave, Ryan

h1susex is powered down to restore cabling from the new 28bit LIGO-DAC to the original 20bit General Standards DACs.

Procedure:

Put h1iopseiex SWWD into long bypass

Safe the h1susetmx, h1sustmsx and h1susetmxpi models

Stop all models on h1susex

Fence h1susex from the Dolphin fabric

Power down h1susex.

Comments related to this report
marc.pirello@LIGO.ORG - 11:01, Tuesday 19 November 2024 (81353)
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WP12201

D. Barker, F. Clara, M. Pirello

Swap to original 20 bit DAC complete.  Here are the steps we took to revert from LD32 to GS20

  1. Power off IO-SUS-ETMX with Dave's help, suspension set to safe.
  2. Move PI DB9 cable from new PI AI chassis (S1500301) to old PI AI chassis (S1500299).  This is on the front of the chassis (channels 6 and 7)
  3. Unplugged ESD-LD32 cable from the old PI AI chassis.(S1500299) on the back, DAC adapter 0.
  4. Unplugged ESD-LD32 cable from IO-SUS-ETMX slot 8 (LD32 bank 0)
  5. Move ETMX-86 from the new PI AI chassis (S1500301) to old PI AI chassis (S1500299) on the back DAC adapter 0  
  6. Removed WD-Bypass-Cable from slot 5 of the IO-SUS-ETMX and DAC adpater 1 of old PI AI chassis (S1500299) on the back. 
  7. Move ETMX-42 from IO-SUS-ETMX slot 10 (LD32 bank 2) to IO-SUS-ETMX slot 5 (GS 20 bit DAC).
  8. Power on IO-SUS-ETMX and verify watchdogs reapplied.

Included images of front and rear of rack prior to changes.

 

Images attached to this comment
david.barker@LIGO.ORG - 09:45, Wednesday 20 November 2024 (81382)
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Tue19Nov2024
LOC TIME HOSTNAME     MODEL/REBOOT
09:59:38 h1susex      h1iopsusex  
09:59:51 h1susex      h1susetmx   
10:00:04 h1susex      h1sustmsx   
10:00:17 h1susex      h1susetmxpi