uAvionix AV-30-C - 17 Serial Interface Specification

UAV-1003947-001, AV-30-C, Installation Manual 50
Rev E
17 Serial Interface Specification
GPS serial input is compatible with the “Aviation” and NMEA serial protocols.
Aviation protocol is 9600 Baud, No Parity, 8 Data Bits, 1 Stop bit. NMEA is
either 4800 or 9600 Baud, No Parity, 8 Data Bits, 1 Stop Bit.
The packets received are as follows:
Table 9 - GPS Serial Specification
Parameter Name
Aviation Packet
NMEA Packet
GPS Track
“C” Packet
$GPRMC, Field 8
GPS Ground Speed
“D” Packet
$GPRMC, Field 7
Distance to Waypoint
“E” Packet
$GPRMB, Field 10
Cross Track Error
“G” Packet
$GPRMB, Field 2
Desired Track
“I” Packet
Computed
Waypoint ID
“K” Packet
$GPRMB, Field 5
Bearing to Waypoint
“L” Packet
$GPRMB, Field 11
Magnetic Variation
“Q” Packet
$GPRMC, Field 10
AT Master Flag
“T” Packet, Flag 4
$GPGGA, Field 6
Garmin Master Flag
“S” Packet, Flag 5
N/A