Leica Geosystems GPS System 500 - Technical Reference Manual - Manual (Page 325)

325 Appendix E Technical Reference Manual-4.0.0en
Appendix E - NMEA Message Formats
The Receiver can output a variety of NMEA messages.
These can be set using the CONFIG key or may be
steered from a connected device using a query message.
Note that a Talker ID appears at the beginning of the
header. This is normally GP for GPS but may be set by
the user in CONFIG\NMEA.
The query message format is the same for every NMEA
message apart from the message identifier.
Format
$PLEIQ,
XXX,
x,
x
*hh
GLL - Geodetic Position - Latitude/Longitude
GNS - GNSS Fix Data
GSA - GPS DOP and Active Satellites
GSV - GPS Satellites in View
LLK - Leica Local Position and GDOP
LLQ - Leica Local Position and Quality
VTG - Course Over Ground and Ground Speed
ZDA - Time and Date
2 Port from which NMEA message is requested:
1 - Port 1
2 - Port 2
3 - Port 3
3 Output rate of NMEA Message
Content
Header, message sent from
Outside
World.
Message Identifier
1
Port 2
Output Rate 3
Checksum
Carriage Return
Line Feed
0 - Output off
1 - 0.1 s (10Hz)
2 - 0.2 s (5Hz)
3 - 0.5 s (2Hz)
4 - 1 s
5 - 2 s
6 - 3 s
7 - 4 s
8 - 5 s
9 - 6 s
10 - 10 s
11 - 12 s
12 - 15 s
13 - 20 s
14 - 30 s
15 - 1 min
16 - 2 min
17 - 3 min
18 - 4 min
19 - 5 min
20 - 6 min
21 - 10 min
22 - 12 min
23 - 15 min
24 - 20 min
25 - 30 min
26 - 1 h
200 - Output
immediately
1 Message Identifiers are:
GGA - Global Positioning System Fix Data
GGK - Real-Time Position with DOP
GGK (PT) - Real-Time Position with DOP
GGQ - Real-Time Position with CQ