Furuno GD-3300, GP-3300 manual Satellite Force Health/Deselection, 10-5

Item	Description
MIN. ELEVATION	Enters minimum angle above the horizon a satellite must be positioned to use
ANGLE	it for fixing position. The default setting is five degrees.
DESELECT SAT	Every GPS satellite is broadcasting abnormal satellite number(s) in the
NO.	Almanac. Using this infomation the GPS receiver eliminates any
	malfunctioning satellite from the GPS satellite schedule. Once the
	malfunctioning satellite is returned to on-line status it is automatically restored
	to the satellite schedule when the Almanac is received. In some instances
	however the Almanac may not contain information which announces that a
	satellite is now back on line. If you hear of this through another source, you
	can manually restore the satellite to the satellite schedule. This is called
	“Forced Health.” Conversely, you can manually “Deselect” a healthy satellite if
	you hear it is “unhealthy.” To force health or deselect a satellite see the
	procedure below.
D.GPS MODE	Select normal mode or DGPS mode.
	When you select DGPS ON, set the items below referring to the DGPS
	Beacon Receiver's operator's manual.
RTCM VERSION,	Set according to DGPS Beacon Receiver connected.
BYTE FORM,
FIRST BIT, PARITY
BIT, STOP BIT, BIT
RATE, BAUD RATE

10.3Satellite Force Health/Deselection

1.Press [MENU] and [8], and then press [−] to set the cursor on

PAGE CHANGE (TO GPS INITIAL SETTINGS).

2.Set the cursor on DESELECT SATELLITE NO. The display should look something like Figure 10-3.

Satellite condition (NONE, No satellite; OK, Satellite in use; NG, No Good)

01	: NONE (		) 02 : OK		(DESELECT) 01		: OK	(FORCED )
04	: NONE (		) 05 : NONE (			) 04	: NG	(	)
07	: NONE (		) 08 : NONE (			) 07	: OK	(	)
10	: NONE (		) 11 : OK		(	) 10	: OK	(	)
13	: OK	(	) 14 : OK		(	) 13	: OK	(	)
16	: OK	(	) 17 : OK		(	) 16	: OK	(	)
19	: OK	(	) 20 : OK		(	) 19	: OK	(	)
22	: NONE (		) 23	: OK	(	) 22	: OK	(	)
25	: OK	(	) 26	: OK	(	) 25	: OK	(	)
28	: OK	(	) 29	: NONE (		) 28	: NONE (		)
31	: NONE (		) 32	: NONE (		) 31	: NONE (		)

Satellite NO.

Figure 10-3 Sample satellite selection display

10-5