GTD-110/150
Chapter 10
Technical Reference
93151542-00
10-1
10.1 Details of input serial data
Sentence name: NMEA-0183 Ver. 1.5/2.0
10.1.1 Input data format
Data per one byte is as follows:
10.1.2 Input data specification
Baud rate
Output level
Output
current
Sentence Update
rate
4800
TTL
5mA max GGA+GLL+VTG+RMC+MSS+MTW+TTM 1
second
10.1.3 Details of input sentences
Name &
Version
Data name
GGA
GPS Position data
Ver.1.5
/2.0
More than 1 bit
provided
Data Bit (ASCII Code)
Logic 0: >+4V
Logic 1: +0.5V
Start Bit D0 D1 D2 D3 D4 D5 D6 D7 Stop Bit
Parity bit: none
$ _ _GGA, hhmmss, XXXX.XXX, N/S, XXXXX.XXX, E/W
Start of sentence
Talker device
Sentence
name
UTC of position
(Hour, Minute, Second)
Latitude
Longitude
E: East
W: West
N: North
S: South
NOTE:
Checksum is a total sum of EX-ORed data that are put between the $ and asterisk (*) signs.
X, XX, XXX, 0/-XXXX, M, 0/-XXX, M, *hh <CR><LF>
Checksum (Version 2 only)
meter
Geoidal
separation
Meter
Antenna
height
(0: positive, -: negative)
HDOP
value
Number of Satellite in use
GPS quality indicator (0:Reception unable, 1:DGPS reception 2:GPS reception)
(0: positive, -: negative)
