Difference between revisions of "DAQ Meeting/20180729"

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* Bob : Teach Cameron and Chandan how to test QWeak ADC channels and look at data read into CODA
 
* Bob : Teach Cameron and Chandan how to test QWeak ADC channels and look at data read into CODA
 
==Minutes==
 
==Minutes==
* Morning - 11AM - Bob, Cameron, Chandan
+
Morning - 11AM - Bob, Cameron, Chandan
**
+
* Metrics for testing a QWeak ADC - it's easier since their dynamic range is much greater and the bit resolution is much higher for them (32 instead of 18 bit gives much higher resolution when digitizing)
 +
** It works
 +
** Does't saturate at -5 or +5V
 +
** The zero volt signal is near the middle value of the dynamic range
 +
** Look at pedestal noise (differences between neighboring events, or just ADC values with no signal)
 +
** Use a modified rampdac16 command to put flat points at interesting voltage values for testing dynamic range
  
 
== Testing ==
 
== Testing ==

Latest revision as of 17:58, 8 August 2018

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Agenda

  • Bob : Teach Cameron and Chandan how to test QWeak ADC channels and look at data read into CODA

Minutes

Morning - 11AM - Bob, Cameron, Chandan

  • Metrics for testing a QWeak ADC - it's easier since their dynamic range is much greater and the bit resolution is much higher for them (32 instead of 18 bit gives much higher resolution when digitizing)
    • It works
    • Does't saturate at -5 or +5V
    • The zero volt signal is near the middle value of the dynamic range
    • Look at pedestal noise (differences between neighboring events, or just ADC values with no signal)
    • Use a modified rampdac16 command to put flat points at interesting voltage values for testing dynamic range

Testing

Today's testing