Vaisala MMT310 - Manual (Page 47)

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 47
Test Analog Outputs for Desired
Readings
Syntax: AQTEST x yyy.yyy<cr>
Using the AQTEST command, you can test the analog output by forcing
the output to correspond to a chosen value.
Where
x
= Output quantity (aw / T / ppm)
yyy.yyy = Value
For example:
>aqtest aw 0.5
CH1 aw : 0.5000 aw 10.000mA
CH2 T : 22.3 'C 7.568mA
>
The set values remain valid until you give the command AQTEST
without a value or RESET the transmitter.
Set Error Outputs
Syntax: AERR<cr>
The factory default state for analog outputs during error condition is
0 mA. Be careful when selecting the new error value: the error state of
the transmitter should not cause problems in process monitoring.
Example:
>aerr
Ch1 error out : 0.000mA ?
Ch2 error out : 0.000mA ?
NOTE The error output value must be within the output type’s valid range.
NOTE The error output value is shown only when there are minor electrical
faults such as a humidity sensor open circuit. When there is a severe
device malfunction, such as an analog output electronics failure or a
microprocessor ROM/RAM failure, the error output value is not
necessarily shown.