Ryan S, Ibrahim
In prep for Fil turning off the high voltages, we ramped down and disabled some systems that use it, outlined in M1300464 (screenshot attached of specific page).
The following settings were changed:
- ZM4/5 PSAMs ramped down - not in the above doc but on Fil's WP by Sheila's suggestion
- Pico High Voltages were disabled
- SQZ Opo TECs disabled
I disabled all picomotor drivers (usually we keep these all disabled anyway, but still Squeezer HAM7 was the only one enabled) and turned off all SQZ TECs. The instructions only list the OPO, but there are three more: OFI, SFI1, and SFI2. I turned these off by switching the Servo toggle to "Off" in the upper-right of each TEC's medm screen (screenshot attached).
WP 12434
WP 12260
Procedure M1300464
The following high voltage power supplies/electronics were powered off in preparation for the corner vent.
1. CER Mezzanine - ESD HV
2. CER Mezzanine - Fast Shutter HV
3. CER Mezzanine - OMC PZT HV
4. CER - SR3 and ITM heaters
5. LVEA - Fast Shutter Driver Chassis - Disabled and powered off
6. MER Mezzanine - HAM7 PSAMS HV
7. MER Mezzanine - HAM7 Piezo HV
The interlock for HAM6 that was bypassed last December (alog 82011) has been restored. The gauge on HAM6 is scheduled to be replaced during the upcoming vent.