Vaisala HMP243 Guide de l'utilisateur télécharger pdf (Page 88)

HMP240

Appendix 1: Serial commands M210300en

4. OTHERS

ITEST Testing the analogue outputs

ITEST <cr>

ITEST a b <cr>

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 <cr>

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 <cr>

0.5000 4.0000 1.00694 10.62970 1.23336 3.01722

• releasing the forced control and reading the outputs

>itest <cr>

1.9427 2.3392 1.00731 10.62428 1.97157 2.16978

FILT Setting the averaging time

Disconnect the security lock jumper!

FILT nnnn <cr>

nnnn = averaging time (0 - 1024 seconds)

This command is used to set and inspect the averaging time during which the

individual measurement samples are integrated to get an averaged reading.

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 129 130

Pas de commentaire

Vaisala HMP243 Guide de l'utilisateur Page 88