[Marc, Michael]

Since sometimes now we have glitch on CC2 error signal while generating squeezing.

We did the following checks :

check of other error signals

No visible correlation on any error signal except some slight one with CC1.

tuning p pol frequency

CC2 error signal get noisier at the frequency that maximizes amplification

swap of homodyne power supply

As reported previously, the homodyne power supply plug got broken during last electrical shutdown and replaced by a new one.

We plugged the homodyne power supply on a different power supply with no change

laser sources noise eater on/off

No effect

trial to swap p pol and cc pll boards

We swapped all cables on pll servo, updated DDS3 to correct parameters and tried to load the good configuration on the board software.

For some reason we could not lock anymore the PLLs. Maybe due to the fact that PLL are using different boards?