128 A-Series display - User reference manual
For each tracked satellite, this screen provides:
• satellite number
• signal strength bar
• status
• azimuth angle
• elevation angle
• A sky-view to show the position of tracked satellites
To view GPS status
1. Press and hold the PAGE/MENU button.
2. Select GPS Status
GPS accuracy depends upon the parameters shown, especially the
azimuth and elevation angles which are used in triangulation to cal-
culate your position.
Horizontal Dilution of Position (HDOP) is a measure of GPS accu-
racy; a higher figure signifies a greater positional error. In ideal
circumstances, the figure should be in the region of 1.0.
Satellite differential system
Select the satellite group(s) appropriate to your area using the Other
Set Up softkey:
• WAAS - United States
• EGNOS - Europe
• MSAS - Japan
• GAGAN - India
Note: The EGNOS, MSAS and GAGAN systems may not be
active. Check with your local government for operational
status.
COG/SOG filter
Set the COG/SOG filter to the level appropriate to your use and to
the level of oscillation being experienced by the GPS:
• HIGH for trawling or when there is a high level of oscillation.
• MEDIUM for general use.
• LOW when travelling at speed
DIFF SET UP OTHER SET UP RESTART GPS
DIFF GPS
ON OFF
D6809_3
Actual mode
GPS reporting
(No Fix, Fix, D
Fix or SD Fix)
Mode
selected
by GPS
Only available if connected to
Raymarine landbased GPS e.g. 114
81314-1_A Series Reference Guide.book Page 128 Thursday, August 28, 2008 9:23 AM
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