Vaisala HMP228 User Manual
Page 69
HMP228 Transmitters
M210282en-A
Appendix 1: Serial commands
63
XPRES
Setting the pressure for mixing ratio calculations tempo-
rarily
XPRES pppp.pp
pppp.pp =
pressure (hPa)
The function and format of XPRES are the same as those of the PRES com-
mand except that with XPRES command the setting is valid only until a reset
is given, power is turned off or pressure is set to zero with XPRES. After this
the pressure stored with command PRES is valid again.
CDATE
Entering calibration date
CDATE xxxxxx
xxxxxx =
calibration date (000101...991231)
When the latest calibration date has to kept in memory, it is entered as fol-
lows:
>CDATE 940506
If the command is given without the date, the transmitter outputs the latest
calibration already in memory.
>CDATE
940420
The date can be given in any format; however, the maximum number of digits
is six.
DATE
Setting the date
DATE
For example, to enter a new date:
>DATE
Current date is 1993-01-30
Enter new date (yyyy-mm-dd) : 1993-06-12
When the current date is asked, the new date is passed with