Trimble Outdoors Part Number 45005-00-ENG manual All-In-View Satellite Selection Report

Trimble Standard Interface Protocol A

0x6D Report Packet 6D

All-In-View Satellite Selection Report

This packet provides a list of satellites used for position fixes by the GPS receiver. The packet also provides the PDOP, HDOP, and VDOP of that set and provides the current mode (automatic or manual, 3-D or 2-D). This packet has variable length equal to 16+nsvs (minimum 4), where "nsvs" is the number of satellites used in the solution.

The GPS receiver sends this packet in response to packet 24 or whenever a new satellite selection is attempted. The GPS receiver attempts a new selection every 30 seconds and whenever satellite availability and tracking status change. The data format is shown below.

Table A-63 Report Packet 6D

Byte	Item	Type	Units
0	Mode	BYTE	Bit	Value	Meaning
			0-2	0	Auto
				1	Time Only (1-SV)
				2	2D Clock Hold
				3	2D
				4	3D
				5	Overdetermined Clock
				6	DGPS Reference
			3	0	Auto
				1	manual
			4-7	- -	nsvs
1-4	PDOP	SINGLE	PDOP
5-8	HDOP	SINGLE	HDOP
9-12	VDOP	SINGLE	VDOP
13-16	TDOP	SINGLE	TDOP
(16+nsvs)	SV PRN	BYTE

A-74 Acutime 2000 Synchronization Kit User Guide