Alinco EJ-50U - Manual (Page 25)

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Direction in degrees
Date in dd/mm/yy format.
The difference of magnetic direction from true north.
To which direction the magnetic direction differs. E toward east, W toward west.
Hh<CR><LF> the check-sum and the end of the message.
5-4-7 $GPGLL
One of NMEA-0183 formats. latitude, longitude, and time can be detected. EJ-50U can analyze and re-structure
this format.
The data contains the following information:
Starts $GPGLL sentence.
Latitude in numbers
N for north, S for South.
The data status. [A] for valid data, [V] for invalid.
Hh<CR><LF> the check-sum and the end of the message.
5-4-8 $PNTS
This is a private-sentence based on NMEA-0183. The data contains date, time, latitude, longitude, moving
speed, direction, altitude plus a short message, group codes, and icon numbers. The EJ-50U does not analyze this
format but can re-structure it.
The data contains the following information:
$PNTS Starts the $PNTS sentence
version
the registered information. [0]=normal geographical location data. This is the only data EJ-50U can
re-structure. [s]=Initial position for the course setting [E]=ending position for the course setting [1]=the
course data between initial and ending [P]=the check point registration [A]=check data when the automatic
position transmission is set OFF [R]=check data when the course data or check point data is received.
Dd/mm/yyyy/hh/mm/ss: Date and time indication.
Latitude in DMD followed by N or S
Longitude in DMD followed by E or W
Direction: Shown with the number 360 degrees divided by 64. 00 stands for true north, 16 for east.
Speed in Km/h
One of 15 characters [0] to [9], [A] to [E]. NTSMRK command determines this character when EJ-50U is
used.
A short message up to 20 bites. Use NTSMSG command to determine this message.
A group code: 3 letters with a combination of [0] to [9], [A] to [Z]. Use NTSGRP command to determine.
Status: [1] for usable information, [0] for non-usable information.
*hh<CR><LF> the check-sum and end of PNTS sentence.
5-4-9 Notes for NMEA-0183
The format of NMEA-0183 data depends on each devices’ own codes. The following formats are not against
NMEA-0183 rules. The software used to process the received beacons must be programmed to receive and
process the data, such as:
The partition of the data field is a comma[,]. The null-field format is used when particular data is intentionally
left blank. In this case, nothing is written, but used a comma to go to the next field.
If all the data afterwards are not necessary, the data may be ended at once followed by <CR><LF>