Vaisala PTU300 Guide de l'utilisateur Page 79

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Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 77
NOTE
This command changes both the serial output and display units to
either metric or non-metric units. When you want to output both
metric and non-metric units simultaneously on the display, select the
display units later by using the display/keypad.
NMEA Data Format
The PTU300 transmitter can be used in connection with a GPS
receiver. It responds to a GPS input command by outputting a single
predefined NMEA format message or the transmitter serial number.
NOTE
The pressure unit has to be set as bar when the NMEA data output
format is used.
The maximum length of FORM is 128 characters.
NOTE
Check that the serial bus settings of the transmitter and those of the
GPS receiver are the same. A baud rate less than 9600 is
recommended.
Example:
"$PASHS,XDR,P,"1.5_P_",B,"_SN_",C,"_3.2_T_",C,"_SN_",H,"_RH_",P,"
_SN_#r #n
where,
"$PASHS,XDR,P," text field $PASHS,XDR,P, (P transducer type
= pressure)
1.5 number field
P pressure
",B," text field (B transmitter unit = Bar)
SN transmitter ID (serial number)
",C," text field (C transducer type = temperature)
3.2 number field
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