(Alexa, Daniel, Stefan)

We

 - debugged the shutter software, and got it to work
 - switched the shutter control cables between shutter control 2 and 3
 - set up the appropriate threshold for the shutter (0V)
 - placed an iris in the main beam path to guarantee that the shutter protects the RFPD
 - verified the safety of the RFPD by moving PRM, and measuring the max power out of the RFPD.
 - aligned the RFPD to the weak ITMY reflected beam (with the PRM misaligned)
 - switched the supply cables between POPAIR_A and REFLAIR_A (they are now going to the right input)
 - verified that we see fringes on the DC readback
 - turned on the REFLAIR_A_RF9_LF power supply, verified that all whitening is 0
 - verified that we get a signal in H1:LSC-REFLAIR_A_LF_OUT
 - moved the RF cable to the REFLAIR demodulation board (i.e. the signal currently does not go to the real common mode board)
 - verified that we have a signal in H1:LSC-REFLAIR_A_RF9_I_OUT
 - verified that its whitening is all off
 - tried to lock the arm cavity, but had excessive pitch motion

PS:
 - The RefCav is still pretty lame in re-locking