Sonar Picture Advance

The picture advance setting allows the sonar picture to advance faster by drawing more than one column of data on the screen for each column of sounder data received. This is especially helpful when you are using the sounder in deep water, because the sonar signal takes longer to travel to the water bottom and back to the transducer.

The 1/1 setting draws one column of information on the screen per sounder return. The 2/1 setting draws two columns of information on the screen per sounder return, and so on for the 4/1 and 8/1 settings.

To access this feature on a GPSMAP 7x0, 4xxx, 5xxx, 6xxx, or 70xx/72xx series device:

1. With the device powered ON, press the Home button
2. Choose Sonar
3. Press Menu
4. Choose Sonar Setup
5. Choose Pic Advance
6. Select a picture advance setting

To access this feature on a GPSMAP 8xxx, 74xx/76xx, 7x1, 7x2, 8x0, 9x2, 10x0, 10x2, 12x2 or an echoMAP/echoMAP CHIRP 4x/5x/7x/9x series device:

1. With the device powered ON, press the Home button
2. Choose Sonar
3. Press Menu
4. Choose Sonar Setup
5. Choose Appearance
6. Choose Pic Advance
7. Select a picture advance setting