Paroscientific, Inc.

Paroscientific, Inc. Document No. 8360-002 Rev. K. 8/1/2002Command: NHDescription: Read or set NMEA header used in the P9 command response.By default, the NH (NMEA Header) string is set to produce the generic NMEA header“$WI”. The default P9 output looks like this:$WIXDR,P,,B,,C,,C,,H,,P,To change the header string to “$PASHS,”, use the following NH (NMEA Header)command.Command: *0100EW *0100NH=$PASHS,Response: *0001NH=$PASHS,The P9 response will now look like this…$PASHS,XDR,P,,B,,C,,C,,H,,P,Remember to add a comma to the end of the string if a comma is to appear beforeXDR.The maximum string length is 7 characters.Unused characters to be "null" not spaces.ASCII characters 32 through 90 are valid, except “*” and “=”.Command: TT or A1Description: Read an external temperature sensor measurement in degrees CelsiusCommand: *0100TT (*0100A1)Response: *0001##.##*0001-##.## (example of response for negative temperature values).Note: See MD command for fan status indication (see section 5.3).Command: RH or A2Description: Read an external humidity sensor measurement in percent.Command: *0100RH (*0100A2)Response: *0001##.#Command: N1Description: Read raw analog to digital converter value for the temperature input.Command: *0100N1Response: *0001######MET3A Installation, Operation & Maintenance Guide Page 11