56
Getting Started
Main Page Sequence
56
Reference
Sky View Signal
Strength
Bars
Receiver
Status
Accuracy
45°
90°
Outer ring -
the horizon
Inner ring- 45°
above the horizon
Center dot -90°
above the horizon
Main Menu— GPS Tab
Database (continued)
• Card – interface control for saving waypoints, routes and tracks to a data card.
Setup
• Alarms – sets up alarms system, navigation, and optional sonar.
• System – defi nes System, Units, Time, Communication, and Marine Network settings.
• Map – defi nes Map Page and Map window settings. See page 29
• Temp – sets up the water temperature log. (if equipped with GSD 20 or NMEA compatible device)
• Highway – sets up Highway Page features. See page 35.
GPS Tab— the “Info” submenu tab provides a visual reference of satellite acquisition, receiver status, and
accuracy. The status information gives you an idea of what the receiver is doing at any given moment. The
sky view and signal strength bars give you an indication of what satellites are visible to the receiver and
whether or not they are being tracked. The signal strength is shown on a bar graph for each satellite, with
the satellite number below. As the receiver locks onto satellites, a signal strength bar appears for each satel-
lite in view. The progress of satellite acquisition is shown in three stages:
• No signal strength bars— the receiver is looking for the satellites indicated.
• White signal strength bars— the receiver has found the satellite(s) and is collecting data.
• Green signal strength bars— the receiver has collected the necessary data and the satellite(s) are
ready for use.
As soon as the GPSMAP 3006C/3010C has collected the necessary data from the best satellites in
view to calculate a fi x, the status fi eld indicates “Ready For Navigation” in the Status fi eld. The unit then
updates the position, date and time.
You can use the sky view to help determine if any satellites are being blocked, and whether you have
a current position fi x (indicated by a “Ready For Navigation” in the Status fi eld). The sky view shows a
bird’s-eye view of the position of each satellite relative to the receiver’s last known position. The outer circle
represents the horizon (north up), the inner circle 45º above the horizon, and the center point a position
directly overhead. You can also set the sky view to a ‘Track Up’ confi guration, causing the top of the sky
view to align along your current track heading.
Main Menu: GPS Tab
