Vaisala GMP231 - Manual (Page 49)

Chapter 4 ____________________________________________________ Vaisala Industrial Protocol
VAISALA ________________________________________________________________________ 47
Test Analog Output
You can test the operation of the analog output with the ATEST
command by forcing the output to a given value. You can then measure
the output with a calibrated multimeter. After testing the output, use the
ATEST command again to exit the test mode.
ATEST [channel] [level]
where
channel = Analog output channel, only 1 can be selected.
level = Level for analog output channel in mA.
Example (enable analog output test mode, set level to 20 mA):
pass 1300
atest 1 20
Aout 1 (mA) :20.000
Example (disabling analog output test mode, resuming normal output):
atest 1
Aout 1 test mode disabled.
Other Commands
Enable Advanced Commands
Use the PASS command to enable advanced serial commands. Advanced
commands can be used until the next reset.
PASS [code]
where
code = Code for enabling advanced commands (1300).
Example:
pass 1300