Reports until 14:03, Monday 24 March 2014
H1 ISC
stefan.ballmer@LIGO.ORG - posted 14:03, Monday 24 March 2014 - last comment - 15:49, Tuesday 25 March 2014(10961)
REFLAIR_A_RF45_I whitening stage 1 diagnostic 
Jax, Stefan

We verified that the whitening stage 1 of REFLAIR_A_RF45_I is indeed not switching on the analog side. We checked that the command bit (pin 25 / GND=pin 20) makes it to the board. Thus Jax will pull the board tomorrow and debug it..

Details:
Rack: ISC R2 slot 32
S/N: S1101590
Assembly: D1002559 (board2)
Comments related to this report
stefan.ballmer@LIGO.ORG - 15:49, Tuesday 25 March 2014 (10993)
Link 

Turns out we confused I and Q: in the electronics the Q channel comes before the I channel.

Bottom line: the whitening board works fine. The Beckoff system does not switch line 33 on cable H1:ISC 56. I left a scope in the electronics room hooked up to that line.