evan.hall@LIGO.ORG - posted 21:26, Sunday 16 February 2014 - last comment - 10:57, Tuesday 18 February 2014(10120)
ALS-X BBPD has gone dark
The ALS-X BBPD appears to have gone dark around 2:30 PST on Friday. The EX laser IR PD and fiber monitor PDs appear to have been disturbed around the same time, but they have recovered.
Possibly this is related to Friday's work on installing WFS on the ISCTEX table, or the related editing of the X-end simulink models.
Images attached to this report
Comments related to this report
The +-18V PD power supply cable for the table was unplugged at the power strip on the field rack. All DC diodes connected to the DC diode interface were down.
Should work now.
Don't know why it was unplugged, it's hard to accidentally plug it off.