Aritomi, Marc, Michael, Yuhang

Yesterday during the work on CCFC, we found out that the FC can be unlocked if we touch some cable of the rack or some ground of mixers also connected to the rack.

The rack power supply ground is connected to tama ground. Using a powermeter we checked the voltage between the power supply ground and the ground cable and found that it was zero...

We might have to investigate directly on the rack.

Also we found out that even if the signal generator is turned off, if it is connected to some voltage driver it might introduce noise and cause some unlocks.