Thermo Scientific 49i, Instruction Manual, Page: 272 / 314

C-Link Protocol Commands
Calibration
B-24 Model 49
i
Instruction Manual Thermo Fisher Scientific
Send: set stream time 0
Receive: set stream time 0 ok
Calibration
set cal o3 coef
set cal high o3 coef
set cal low o3 coef
These commands will auto-calibrate the O
3
coefficient based on the O
3
span gas concentrations. The high and low commands are only available in
dual and auto range mode. If the mode is incorrect, the instrument responds
with “can’t, wrong settings”. The example that follows shows a successful
auto-calibration of the low O
3
coefficient.
Send: set cal low 03 coef
Receive: set cal low 03 coef ok
set cal o3 bkg
These commands will auto-calibrate the O
3
background. If the instrument
is set to manual O
3
mode, the response to “set O
3
bkg” will be “can’t, wrong
settings”. The example that follows shows a successful auto-calibration of
the O
3
background.
Send: set cal 03 bkg
Receive: set cal 03 bkg ok
o3 coef
high o3 coef
low o3 coef
These commands report the O
3
coefficient in single range mode, or the high
and low range coefficients in dual or auto range mode. If the mode is
incorrect, the instrument responds with “can’t, wrong settings”. The
example that follows reports that the O
3
coefficient is 1.000.
Send: o3 coef
Receive: o3 coef 1.000
Table B-5. Stream Time Values
Value Stream Time
0 Attaches time stamp to streaming data string
1 Does not attach time stamp to streaming data string