| Re: Raw data read and write [message #3846 is a reply to message #3840] |
Wed, 06 December 2006 18:17   |
Ken Oyama
Messages: 7
Registered: November 2006
Location: Heidelberg
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occasional visitor |
From: *physi.uni-heidelberg.de
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Hi Christian, and all,
Adding TRAP pedestal of 10 might be enough if we do it
carefully.
What will be different from real case is
that if ADC intrinsic pedestal is large (like 100),
we loose dynamic range of 10 % because ADC range is
limited from 0 to 1023.
This feature can not be simulated if we add 10.
It seems designer of current digitizer was thinking
about this effect as far as I see from the code.
This problem is relevant only if there is huge signal.
I do not know this affects to tracking performance.
Maybe it is negligible. Does anybody know?
If we decide such effect is negligible and do not care
then I would just put 10 (actually it was done!).
best regards,
Ken
Ken
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