I modified the analyzer so that it shows data from all four modules.
I find that there is evidence of corruption of the V1725 ADC data on a couple channels. You can see an example of a waveform with corruption in the attachment. You see that there seems to be a bunch of fluctuations of exactly 16
ADC counts, which seems unphysical. So far I see this problem in these channels:
module 0, ch 0
module 0, ch 1
module 0, ch 13
module 1, ch 4
module 3, ch 6
I saw corruption similar to this on the V1730 readout. CAEN does have a scheme for ADC calibration (by poking a register), which worked well for the V1730. I thought that I implemented this ADC calibration for the V1725, but I might
have messed it. I'll look at this again. |