Furuno CH-300 Operator's Manual page 24

1. OPERATIONAL OVERVIEW
Dual-frequency display
1. Push the GAIN control.
HIGH FREQ GAIN :
LOW FREQ GAIN : 5.0
PUSH GAIN KNOB TO SPECIFY THE FREQ
ROTATE GAIN KNOB TO CHANGE THE FREQ
2. Push the GAIN control to choose the frequency for which you want to adjust the gain.
3. Rotate the GAIN control to adjust the gain (range: 0-10).
GAIN(HI) 5.0
Gain setting high and low frequencies
Location of gain setting indications on dual-frequency display
4. Press the MENU key to close the gain setting window.
1-14
5.0 (0-10)
(0-10)
GAIN(LO) 5.3