Appendix B RS-232 Commands
B-4
co bkg
This command reports the current CO background. The example below reports that the
CO background is 1.4 ppm.
Send: "co bkg"
Receive: "co bkg 1.400 ppm"
set co bkg
dd.ddd
This command is used to set the CO background to a user-defined value. The example
below sets the CO background to 1.4 ppb.
Send: "set co bkg 1.400"
Receive: "set co bkg 1.400 ok"
set cal co bkg
This command performs the automatic calibration of the CO background. The example
below shows a successful automatic calibration.
Send: "set cal co bkg"
Receive: "set cal co bkg ok"
co coef
low co coef
The “co coef” command reports the co coefficient in single range mode and the high co
coefficient in dual range or auto range mode when using a zero/span calibration. The
example below reports a co coefficient of 1.005.
Send “co coef”
Receive “co coef 1.005”
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