Campbell GPS16X-HVS Manual de Instruções descarregar pdf (Página 26)

GPS16X-HVS GPS Receiver

Appendix C. GPS16X-HVS Setups

As configured by Campbell Scientific, the GPS16X-HVS will output the

NMEA 0183 $GPGGA data string once a second, the PPS signal is enabled

with a duration of 100 milliseconds and the baud rate is set to 4800 baud.

Special software (SNRSRCFG.EXE) is available from Garmin International for

system setup. The GPS16X-HVS user manual available from Garmin

International provides technical details beyond the scope of the Campbell

Scientific user manual.

Settings used by Campbell Scientific for GPS16X-HVS setup:

GPS Base Model = GPS16X

Fix Mode = Automatic

Baud Rate = 4800

Dead Reckon Time = 30 sec

NMEA output time = 1 sec

Position pinning = off

NMEA 2.30 mode = off

Power Save Mode = off (Normal mode)

PPS mode = 1 Hz

PPS Length = 100 mS

Phaze output Data = off

DGPS Mode = WAAS only

Differential mode = Automatic

Earth Datum Index = WGS 84

Selected Sentences = GPGGA

Common changes would be baud rate and selected sentences. The CR1000,

CR3000, CR800, and CR850 dataloggers can support baud rates above 4800,

which can be beneficial in some applications. The NMEA 0183 GPVTG data

sentence gives ground speed and direction, which may be required for some

applications. Changes can be made with the Garmin software, or with a

terminal emulator and the Garmin technical user manual. Contact Garmin

International (www.garmin.com) for either resource.

NMEA Commands for System Setup

Received NMEA strings are commands to the GPS16X-HVS which change

some operating parameter. Null fields in the configuration sentence indicate no

change. All sentences are terminated with the carriage return and line feed

characters (CRLF). The CRLF can occur anywhere in the string. The *hh

indicates a checksum which is not required.

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