Appendix D. Garmin16-HVS Setups
5. $PGRMO,,G will cause the COM 1 port to change to GARMIN data
Transfer format for the duration of the power cycle. The GARMIN mode
is required for GPS 16/17 series product software updates.
TABLE D-3. Supported NMEA 0183 Sentences
Order and Size
Sentence Default
Output Maximum
Characters
GPRMC Yes
74
GPGGA Yes
82
GPGSA Yes
66
GPGSV Yes
70
PGRME Yes
35
GPGLL No
44
GPVTG No
42
PGRMV No
32
PGRMF No
82
PGRMB Yes
40
PBRMM Yes
32
PGRMT
Once per minute
50
In Table D-3 default Output indicates NMEA sentences that are Garmin16-
HVS defaults. CSI turns off all output except the GPGGA sentence. The time
required to output a NMEA sentence can be determined by multiplying the
maximum number of characters by 10 then dividing the result by the baud rate.
Selected sentences will be transmitted at a periodic rate based on the selected
baud rate and the selected output sentences. The sentences will be output
contiguously. Regardless of the baud rate, the sentences are reference to the
PPS signal immediately preceding the GPRMC sentence, or whichever
sentence is output first.
TABLE D-4. $GPGGA Global Positioning System Fix Data
$GPGGA,1,2,3,4,5,6,7,8,9,M,10,M,11,12*hhCRLF
<1>
UTC time of position fix, hhmmss format
<2>
Latitude, ddmm.mmmm format (leading zeros will be transmitted)
(5 digits of precision on GPS 16A)
<3>
Latitude hemisphere, N or S
<4>
Longitude, ddmm.mmmm format (leading zeros will be
transmitted) (5 digits of precision on GPS 16A)
<5>
Longitude hemisphere, E or W
<6>
GPS quality indication, 0 = fix not available, 1 = Non-differential
GPS fix available, 2 = Differential GPS (DGPS) fix available, 6 =
Estimated
<7>
Number of satellites in use, 00 to 12 (leading zeros will be
transmitted)
<8>
Horizontal dilution of precision, 0.5 to 99.9
<9>
Antenna height above/below mean sea level, -9999.9 to 99999.9
meters
<10>
Geoidal height, -999.9 to 9999.9 meters
<11>
Differential GPS (RTCM SC-104) data age, number of seconds
since last valid RTCM transmission (null if not an RTCM DGPS
fix)
<12> Differential
Reference Station ID, 0000 to 1023 (leading zeros will
be transmitted, null if not an RTCM DGPS fix)
D-3
