V5 - Noise level channel 1 higher than others
The noise level of channel one is in the +/- 50mV range is around a factor of 3 (~5dB) higher on channel 1 than on the other channels. This is likely caused by this channel being closest to the DC/DC switched power supply.
- Re-measure SNR and ENOB of all channels and document in spec on wiki
- Analyze noise sources (spikes) on all channels
- Consider moving all channels on the PCB design and having the Trigger input closest to the DC/DC
- Consider better shielding/decoupling of the DC/DC converter