C-Link Protocol Commands
Calibration
B-26
Model 42
i
Trace Level Instruction Manual
Thermo Fisher Scientific
“set cal no bkg” will be “can’t, wrong settings”. The example below shows a
successful auto-calibration of the NO background.
Send:
set cal no bkg
Receive:
set cal no bkg ok
set cal no coef
set cal no2 coef
set cal nox coef
set cal high no coef
set cal high no2 coef
set cal high nox coef
set cal low no coef
set cal low no2 coef
set cal low nox coef
These commands will auto-calibrate NO, NO
2
, and NO
x
coefficients based
on NO, NO
2
, and NO
x
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 below shows a successful auto-calibration of the low NO
coefficient.
Send:
set cal low no coef
Receive:
set cal low no coef ok
no coef
no2 coef
nox coef
high no coef
high no2 coef
high nox coef
low no coef
low no2 coef
low nox coef
These commands report NO, NO
2
, and NO
x
coefficients 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 below reports that the NO coefficient is 1.000.
Send:
no
coef
Receive:
no coef 1.000
set no coef
value
set no2 coef
value
set nox coef
value
set high no coef
value
set high no2 coef
value
