Vaisala GMP343 - Manual (Page 54)

User’s Guide ______________________________________________________________________
52 ___________________________________________________________________M210514EN-E
Setting and Testing the Analog Outputs
GMP343 has one analog output channel. The channel outputs either
current or voltage signal according to the order configuration. The analog
output always gives the filtered CO
2
results regardless of the quantity set
with FORM command.
Analog Output Hardware
AMODE
SAVE
Analog output hardware can be chosen between current or voltage output.
Command parameters are correspondingly I (for current) and U (for
voltage).
>amode
AMODE : I ? U
>
>save
EEPROM saved successfully.
>
You can scale the chosen analog output signal as follows:
- When you have current output, you can set any value between 0 ... 4
mA for the current signal low level. The default value is 4 mA
(command ILOW). The high value is always 20 mA.
- When you have voltage output, you can set any value between 0 ... 5
for the voltage signal high level (command UHIGH). The low value
is always 0 V.
Remember to set the analog output error value within the range of current/
voltage output. See the command AERR.
The concentration range of the analog output, corresponding to the signal
range set above, can be chosen by determining the low and high values for
the measurement range (AHIGH, ALOW).