Using Serial Data Commands C-23
Unpolled R ecord F o r mats
The following are examples of unpolled record formats. These records are
comma delimited.
Accumulator (TOF) Data Record (A)
CS,A,SNX,tindex,ffff,stime,dtime,evt1,evt3,evt4,total,a1,a2,a3,... an
(the record is not available in Averaging or Correlated modes)
CS = Checksum
A = Accumulator (TOF) Data Record
S = S for Summed Mode
C Correlated mode
N = N for normal operation
A if in autocal mode
D if in autocal and autocal was “done” at the beginning of this
sample
X = X for spare position
tindex = time index 0 to sample time value - 1
(note if enabled for unpolled operation the
record is always reported when tindex = 0)
ffff = 4 digit hex value for status flags (see RF command)
stime = sample time not corrected for dead time
dtime = dead time (ms for 3321, µs for 3320)
evt1 = number of single hump events
evt3 = number of 3+ hump events
evt4 = number of timer overflow events
total = total (2-hump) particles measured (sum of reported channels,
evt 2)
a1... an = particle counts in each accumulator TOF bin (no zeros and
n=1023)
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