AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 404     Entry time: Thu Oct 27 10:57:49 2016
Author: TD 
Subject: AIDA data readout 
Developing real-time AIDA data synchronisation test using MIDASsort

To illustrate AIDA readout, ADC and discriminator data from a pulser event is plotted as a function
of the 100MHz AIDA internal timestamp (1us/channel)

Attachment 1 -    nnaida8  number of ADC and discriminator data items
Attachment 2 - nnaida1-24  number of ADC and discriminator data items
Attachment 3 - 4*(FEE64 module # - 1) + ASIC # (ADC channels 0-95, disc channels 100-195) versus timestamp
(1us/channel)

The spectra clearly illustrate

- 500kHz ADC readout cycle
- discriminator readout precedes ADC readout by ~18us (this figure will be shaping time dependent)
- after-pulse due to pulser injection via simple charge terminator (no pole zero correction) 
  ~84us after start of ADC readout (this figure will be pulser decay time and shaping time dependent)

Note events were identified (delimited) by time periods > 2us between successive ADC data items  
Attachment 1: 100.png  73 kB  Uploaded Thu Oct 27 11:57:57 2016  | Hide | Hide all
100.png
Attachment 2: 101.png  71 kB  Uploaded Thu Oct 27 11:57:57 2016  | Hide | Hide all
101.png
Attachment 3: 102.png  91 kB  Uploaded Thu Oct 27 12:05:29 2016  | Hide | Hide all
102.png
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