Others – Vaisala HMP228 User Manual
Page 67
HMP228 Transmitters
M210282en-A
Appendix 1: Serial commands
61
OTHERS
ITEST
Testing the analogue outputs
ITEST
or
ITEST a b
a
=
current/voltage of channel 1
b
=
current/voltage of channel 2
The operation of the analogue outputs can be tested by forcing the outputs to
given values which can then be measured with a current/voltage meter from
the analogue outputs. The response to ITEST command gives six out-
puts/parameters. Only the first two are relevant; they show the channel current
or voltage in mA or V. The other four figures contain information for service
purposes only.
Examples:
•
reading the channel outputs and parameters
>itest
1.9438 2.3483 1.00694 10.64634 1.97374 2.17665
>
•
forcing outputs 0.5 V and 4 V to channels 1 and 2
>itest 0.5 4
0.5000 4.0000 1.00694 10.62970 1.23336 3.01722
>
•
releasing the forced control and reading the outputs
>itest
1.9427 2.3392 1.00731 10.62428 1.97157 2.16978
>