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GXB5005
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UART Interface
Interface:
Asynchronous serial interface (UART)
Baud rate:
4800bps/9600bps/19200bps/38400bps
Start bit:
1 bit
Data bit:
8 bits
Stop bit:
1 bit
Parity bit:
None
Flow control:
Xon/Xoff
Data output cycle: Approximately 1 second (default)
NMEA0183 Format
The GXB5005 can output 8 different types of sentence: GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG,
GPZDA and PSGSA. If 9600bps, 19200bps or 38400bps baud rate is set for port setting, it outputs 7 types of
sentence: GPGGA, GPGSA, GPGSV, GPRMC, GPVTG, GPZDA and PSGSA as default. Moreover, if 4800bps
baud rate is set, it outputs 4 types of sentences: GPGGA, GPGSA, GPGSV and GPRMC as default.
NMEA Message Output Timing
NMEA messages are output within 1s after the 1PPS pulse.
1
0
D0
D1
D2
D3
D4
D5
D6
D7
Start bit
1 bit
Data bit
8 bits
Stop bit
1 bit
LSB
MSB
t + 1
t + 2
t + 3
t + 4
t + 5
t + 6
T
1PPS
NMEA
t + 1
t + 2
t + 3
t + 4
t + 5
t + 6