The Sonar Page menu with the Log Sonar Chart Data selected (left). Sonar Chart Logging menu with the Start Logging selected (right).
To record or log chart data:
1.Press MENU↓ to LOG SONAR CHART DATAENT.
2.To record data using the default settings, press ENT. The menu clears
and the Sonar Page title bar shows the name of the file you are record- ing. Warning messages will appear as recording time begins to run out.
NOTE:
You can change any of the settings by using the cursor arrows to highlight different commands. Select FILE NAME if you want to change the name. Select CHART QUALITY if you want to lower the file quality and record for a longer period of time. After you've changed the settings, select START LOGGING and press ENT.
Noise Rejection
See the entry on Advanced Signal Processing in this section.
Overlay Data
On any Page display except Satellite Status, you can float or overlay additional GPS or navigation data on the screen with the Overlay Data command. For example, if you left your watch at home, you could dis- play the local time on top of the map. Or, if you wanted to see details about your route and trip, you could show your bearing, course, average speed and trip distance.
The various data available from your unit are divided into categories in the Overlay Data menu. These categories include GPS Data, Naviga- tion, Trip Calculator, Time and Sonar Data.
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