Garmin GPS 16-HVS 기술 사양 - 페이지 19

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1. Gps 16/17 Wiring Diagrams

4.1.6

Tune DGPS Beacon Receiver (PSLIB)

The $PSLIB sentence provides the ability to tune a Garmin GBR 21, GBR 23 or equivalent beacon receiver.

$PSLIB,<1>,<2>*hh<CR><LF>

<1>

Beacon tune frequency, 0.0, 283.5–325.0 kHz in 0.5 kHz steps

<2>

Beacon bit rate, 0, 25, 50, 100, or 200 bps

If valid data is received, the GPS sensor will store it in the EEPROM and echo the PSLIB command to the beacon

receiver. If the GPS sensor is using any stored beacon frequency other than 0.0, it will tune the beacon receiver once

immediately after power up or external reset.

4.2

Transmitted NMEA 0183 Sentences

The subsequent paragraphs define the sentences that can be transmitted on COM 1 by the GPS sensor.

4.2.1

Sentence Transmission Rate

Sentences are transmitted with respect to the user selected baud rate.

The GPS sensor will transmit each sentence (except where noted in particular transmitted sentence descriptions) at a

periodic rate based on the user selected baud rate and user selected output sentences. The GPS sensor will transmit

the selected sentences contiguously. The length of the transmission can be determined by the following equation and

Tables 2 and 3:

length of transmission

Sentence

GPRMC

GPGGA

GPGSA

GPGSV

PGRME

GPGLL

GPVTG

PGRMV

PGRMF

PGRMB

PGRMM

PGRMT

The maximum number of fields allowed in a single sentence is 82 characters including delimiters. Values in the

table include the sentence start delimiter character "$" and the termination delimiter <CR><LF>. The factory set

defaults will result in a once-per-second transmission at the NMEA 0183 specification transmission rate of 4800

baud.

Regardless of the selected baud rate, the information transmitted by the GPS sensor is referenced to the one-pulse-

per-second output pulse immediately preceding the GPRMC sentence, or whichever sentence is output first in the

burst (see Table 2 above).

190-00228-21

total characters to be transmitted

---------------------------------------------

characters transmitted per second

Output by Default?

Once per minute

Table 2: NMEA 0183 Output Sentence Order and Size

Baud

Characters per Second

300

600

1200

2400

4800

9600

19200

38400

Table 3: Characters per Second for Available Baud Rates

GPS 16/17 Technical Specifications

Page 15

Maximum Characters

120

240

480

960

1920

3840

Rev. A