Detection system (Detection system)tacca, vajente - 16:00 Tuesday 16 August 2011 (30109)
Print this reportB1_d1 demodulation phase Since the photodiodes displacement there were some troubles in the tuning of the demodulation phase of B1_d1. In order to overcome the problem of B1_d1 and B1_ d3 demodulation phases controlled by the same Lo board, we connected B1_d1 to Lo5 (not used since the dismount of B1_d4 and B1_d5 photodiodes). In this configuration B1_d1, B1_d2 and B1_d3 demodulation phases are independently controlled. In Pr_ITF we recovered the old configuration for the B1_d1 gain (from 400 to 200) and we changed back the sign. Moreover, we tuned properly the phase of B1_Lo5. Everything seems to work properly.
B1_d1 demodulation phase is now controlled by using B1_Lo5.
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Vajente, Marque - 14:40 Wednesday 17 August 2011 (30119)
Print this reportWe changed the configuration of Lo25 to assign the name B1_Lo1 instead of B1_Lo5 to the phase shifter now attached to B1_d1.