Vaisala GMW90 - Manual (Page 61)

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 59
Testing Commands
Test Analog Outputs
Use the ATEST command to force the analog outputs to the given value.
Before using the ATEST command it is useful to give the AMODE
command to verify the output mode of the channels.
ATEST [channel value]
where
channel = Number of analog output channel to be tested (1 ... 3).
value = Voltage or current value to set the channel to. Unit is
determined according to output type (V or mA).
The value you set may not be achievable by the transmitter. Voltage
output can go as high as 12 V, and current output can go up to 25 mA.
Also, current output cannot go down to zero.
After testing the output, give the ATEST command with the channel
number to exit the test mode.
Example (verify output mode of the channels):
>pass 9000
>amode
Aout 1 range ( V) : 0.00 ... 5.00 (error: 5.50)
Aout 2 range ( V) : 0.00 ... 5.00 (error: 5.50)
Aout 3 range ( V) : 0.00 ... 5.00 (error: 5.50)
Example (set channel 1 to 6 V):
>atest 1 6
Aout1 ( V) : 6.000
Example (end test mode for channel 1, resume normal output):
>atest 1
Aout1 test mode disabled.