Vaisala PTU300 Guia do Utilizador descarregar pdf (Página 109)

Chapter 4 _________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 107

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 ra

te less than 9600 is recommended.

Example:

"$PASHS,XDR,P,"1.5_P_",B,"_SN_",C,"_3.2_T_",C,"_SN_",H,"_RH_",P,"_S

N_#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

T Temperature

",C," Text field (C temperature unit = deg. Celcius)

SN Transmitter ID (serial number)

",H," Text field (H transducer type = humidity)

RH Humidity

",P," Text field (P humidity = % relative humidity)

SN Transmitter ID (serial number)

#r #n CR LF

_ space

1 2 ... 104 105 106 107 108 109 110 111 112 113 114 ... 216 217

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Vaisala PTU300 Guia do Utilizador Página 109