Furuno GP-7000F - Manual (Page 90)

10. VIDEO SOUNDER OPERATION
10-4
AUTO MODE PRESET MANUAL
DISPLAY MODE NORMAL
FREQUENCY 50 KHz
PICTURE ADVANCE 1/1
TEMPERATURE GRAPH On
ZOOM MARKER On
A-SCOPE Off
SOUNDER SETUP
SENSOR SETUP
Sounder menu
3. Rotate the [ENTER] knob to choose FREQUENCY and then push the
[ENTER] knob.
50 kHz
200 kHz
4. Select 50 KHz or 200 KHz as appropriate and then push the [ENTER] knob.
5. Press the [MENU] key to close the menu.
10.1.2 Selecting a sounder display
There are seven display modes from which to choose: dual frequency, single
frequency, marker zoom, bottom zoom, bottom lock, bottom discrimination and
A-scope.
Dual frequency
The dual-frequency display provides both 50 kHz and 200 kHz pictures. This
display is useful for comparing the same picture with two different sounding
frequencies.
0.0
50k 200k
Dual-frequency display
To show the dual frequency display, do the following.
1. Press the [DISP] key.
2. Rotate the [ENTER] knob to choose
icon.
3. Push the [ENTER] knob.