Firmware Commands B-5
R7 Legacy command to read the photometric voltage (3775
only)
Returns: 0.000–2.500 volts
Example: 2.013
RD Legacy command to read the concentration in p/cc
RV Read the version string.
Returns: Model 377x Ver B.B.B S/N AAAAAAAA
SET Commands
SAV Set analog output full scale voltage
Params 1 => 0 - 1 Volt
2 => 0 - 2 Volt
3 => 0 - 5 Volt
4 => 0 - 10 Volt
Example SAV,4 (A full scale concentration will equal
10V)
SSTART Start a new sample
Params 0 – Stop
1 - Start, data type 1
2 - Start, data type 2
Example SSTART,1 (Starts new sample)
Unit returns once/sec
Data Type 1:
UX,D,D,D,D,D,D,D,D,D,D,C,C,C,C,C,C,C,C,C,C,AN1,AN2,RIE
UX => elapsed time(sec), integer
D => tenth sec corrected counts, integer
C => tenth sec concentration, float
AN1 => analog input 1, float
AN2 => analog input 2, float
RIE => See help cmd for RIE
Data Type 2, 3776:
UX,C,C,C,C,C,C,C,C,C,C,R,R,R,R,R,R,R,R,R,R,F,F,F,F,F,F,F,F,F,F,T,T,T,T,T,T,T,T,T,T
UX => elapsed time(sec), integer
C => tenth sec concentration, float
R => tenth sec raw counts, integer
F => flowrate(cc/0.1sec), float
T => tenth sec deadtime(sec), float
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