GPS Chart Plotter & Echo Sounder
33
1
】
Single frequency
Press
〖
Center/Frequency
〗
to switch 50khz or 100khz under singe frequency image.
2
】
Double frequency
Press
〖
Center/Frequency
〗
to adjust image position of 50khz and 100khz under singe dual
image.
3
】
Frequency / Zoom
Press
〖
Center/Frequency
〗
to switch 50khz or 100khz under this image. Normal zoom in image
will be displayed on up in horizontal mode or left in vertical mode