About " the amplitude noise increase (in) all the EOM FxxMHz", it seems from previous measurements that the ADC is unable to read the Amplitude Noise reading the EOM output sample.

The only way to have the AM noise is to read at the (now available) DAQ_LNFS_{6,8,56}MHz_RAMS_OOTL_AC channels.

The first plot show the trend of the DAQ_EOM_{6,8,56}MHz_mag_{mean,rms} and the DAQ_LNFS_{6,8,56}MHz_RAMS_OOTL_{DC,AC}_{mean,rms} channels. One can see

• a coincidence between the fluctuations of the DAQ_EOM_56MHz_mag_mean and the ones of the LNFS_56MHz_RAMS_OOTL_DC_mean channel
• at the same time there is the same fluctuations on the  DAQ_LNFS_6MHz_RAMS_OOTL_DC_mean but not visible on the DAQ_EOM_6MHz_mag_mean channel

The second plot show the ASD of these channels during the period of the glicthes

• there is a good coherence below 50Hz between the  DAQ_EOM_56mHz_mag channel and the  DAQ_LNFS_56MHz_RAMS_OOTL_{DC,AC} channels
• the DAQ_EOM_56MHz_mag_rms has been rescale by 40 to mach the  DAQ_LNFS_56MHz_RAMS_OOTL_DC_rms channels

The first plot show the trend related to the EOM_{6,8,56}MHz_raw_mag_{mean,rms} chanels and the LNFS_{6,8,56}MHz_RAMS_OOTL_{AC,DC}_{mean,rms} channels :

• it seems that since 2022-11-22-21h20-UTC there is no more noisy period on these channels . 
• No more human activity in the laser lab ?  ligh off ?  others reasons ...

The second plot compare the ASD  these channels

• blue: last noisy period (20221122-21h08-UTC)
• purple: quiet period  (this night 20221124-00h00-UTC)