Garmin GTN 725, Installation Manual, Page: 124 / 178

Page B-4 GTN 725/750 TSO Installation Manual
Rev. A 190-01007-02
Table B-2 describes the Type 2 output sentence item designator (id), sequence number (seq), waypoint
identifier (wpt), waypoint latitude (lat), waypoint longitude (lon), and magnetic variation at waypoint
(mvar) fields.
Table B-2. Type 2 Output Sentence Format
Field Byte
Format
7 6 5 4 3 2 1 0
Description
id
1
2-3
ASCII character 'w' (77 hex)
Two ASCII numeric characters representing
route sequence number of waypoint (01 to 31)
seq
1 x l a n n n n n x - undefined
l - 1 if last waypoint in route
a - 1 if active to waypoint
nnnnn - route sequence number of waypoint
(unsigned binary)
wpt
1-5 Destination waypoint identifier (will be blank
filled on right if less than 5 characters in
identifier)
lat
1
2
3
s d d d d d d d
x x m m m m m m
x h h h h h h h
s - 0 (north) or 1 (south)
ddddddd - latitude degrees (unsigned
binary)
xx -
undefined
mmmmmm - latitude minutes (unsigned
binary)
x -
undefined
hhhhhhh - hundredths of latitude minutes
(unsigned binary)
lon
1
2
3
4
s x x x x x x x
d d d d d d d d
x x m m m m m m
x h h h h h h h s - 0 (east) or 1 (west)
xxxxxxx - undefined
dddddddd - longitude degrees (unsigned
binary)
xx -
undefined
mmmmmm - latitude minutes (unsigned
binary)
x -
undefined
hhhhhhh - hundredths of latitude minutes
(unsigned binary)
mvar 1-2
Two's complement binary in 16ths of degrees.
Easterly variation is positive. MSB output first.