10. VIDEO SOUNDER OPERATION
10-4
Sounder menu
3. Rotate the [ENTER] knob to choose FREQUENCY and then push the [ENTER]
knob.
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 frequen-
cy, 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.
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.
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
50 kHz
200 kHz
0.0
50k
200k
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