Furuno FS-5070 manual AP-18, GLL Geographic position latitude/longitude, ZDA Time and date

APPENDIX

GLL – Geographic position – latitude/longitude

$--GLL,llll.lll,a,yyyyy.yyy,a,hhmmss.ss,A,a*hh<CR><LF>

							+-------	6
						+---------		5
					+	-----------		4
				+	----------------			3
		+------	+	-----------------------			2
+---	+	-----------------------------------				1

1.Latitude, N/S

2.Longitude, E/W

3.UTC of position

4.Status: A=data valid, V=data invalid

5.Mode indicator(see note)

6.Checksum

NOTE Positioning system Mode indicator:

A = Autonomous

D = Differential

E = Estimated (dead reckoning)

M = Manual input

S = Simulator

N = Data not valid

The Mode indicator field supplements the Status field. The Status field shall be set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The positioning system Mode indicator and Status field shall not be null fields.

ZDA – Time and date

$--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh<CR><LF>

						+	--------- 7
					+	-----------	6
				+	--------------		5
			+	------------------			4
		+	----------------------				3
	+	-------------------------					2
+	---------------------------------						1

1.UTC

2.Day, 01 to 31(UTC)

3.Month, 01 to 12(UTC)

4.Year(UTC)

5.Local zone hours, 00h to +-13h

6.Local zone minutes, 00 to +59 as local hours

7.Checksum

AP-18