Make New Entry, Make Followup Entry
User name R. Michaels
Log entry time 15:52:33 on January 3,2013
Entry number 385752
keyword=livetime of FADC in pulse integral modeCompton FADC DAQ Tests
In pulse-integral mode with all but one channel suppressed and
a threshold of 1500, the livetime versus rate looks like fig 1.
The data quality looks invariant wrt rate.
This is a pretty good start, but :
a) this is still a FIXED rate; I need to find a random pulser
b) the busy deadtime indicates 150 nsec, implying 6 MHz rate.
the saturation somewhere between 322 kHz and 1.0 MHz might be due
to other factors like network or writing to disk -- TBD
c) small problem: the pulser can't access the region between
322 kHz and 1.0 MHz because of some "holes" in the bits. A work
in progress.
FIGURE 1
