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FRIBDAQ / SpecTcl

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V785N unpacker #115

Open cerizza opened 6 months ago

cerizza commented 6 months ago

There may be an issue with the CAEN V785N adc unpacker. SpecTcl doesn't handle correctly the firing channel. Possible cause could be this: image

rfoxkendo commented 4 months ago

This is sort of documented somewhen. It's really the way the ADC is built. The 785 has 2 ADC chips one for the even channels and one for the odd ones. The 785N just has one ADC chip stuffed - the even channeled one.

Those who have used this module come to know and accept this. Of course could do a separate v785N module type (alias in VMUSBReadout and new unpacker in VMUSBSpecTcl that is aware of this.

What you will see is that the even channels unpack e.g. set the parameter map to [list chan0 "" chan1 "" chan2 ....]