[Tom Roocke, Oli]

Summary: QOSEM Sat Amp installed, run into ADCs and Coil drivers, injected signals into sat amp appearing where the should in CDS.

Yesterday the QOSEM Sat Amp was installed into the SUS-R2 rack (D2300383, LHO:90004), along with the in air DB37 wiring into the ADC. We checked that the signal routing into CDS was good, by injecting a current into the QPD inputs on the front panel. We used the portable calibrator found in the EE shop, to generate a 3.5mA DC current, which is about the expected level of photocurrent during nominal operation of the QOSEM. The negative output of the calibrator is connected to the cathode input for the QPD (pins 16 and 21 on the DB25 QOSEM inputs on the sat amp, see D2500300), and the positive output is connected to the anode inputs (pins 25, 12, 24, 11 and 20, 7, 19, 6). 

We injected current into the anodes for all 6 channels in the sat amp, and all showed up in CDS on the expected channels. Next to check is the QOSEM Duopus cables, which we are waiting on from C&B. After which that should be the full signal chain tested.