Vaisala DMP248 Manual de servicio Pagina 52

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OPERATING MANUAL_______________________________________________________________
46 _____________________________________________________________________ U263EN-1.4
the seconds (32) start flashing; use the arrow keys to change
them and press ENT
NOTE
The transmitter does not have a real-time clock with backup battery.
This means that the date and time settings are not permanent.
Serial commands
More detailed descriptions of the serial commands can be found in
Appendix 1. Here only the most commonly used command sequences
are described. The instructions on how to connect the DMP248
transmitters to serial bus are given in Chapter Connecting the RS
232C serial bus.
Pressing ESC always interrupts any serial command being given. In
the commands <cr> means carriage return.
Auto-calibration
DRYCAL<cr>
>drycal
DCAL ON
Interval min : 360 ?
Max dTdp: 2.00 ?
dTdp time s : 10 ?
Max corr. : 0.040 ?
Settl time s : 50
>
The interval parameter defines the frequency of auto-calibration
cycles. When the transmitter is turned on, the first auto-calibration
takes place after on hour unless the frequency has been set to less than
an hour. After the first auto-calibration, the set frequency is activated
and the auto-calibration takes place e.g. every six hours. If the setting
is changed, it becomes valid only after the next auto-calibration has
been completed. If you wish to activate it immediately reset the
transmitter or turn it off.
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