Range Shifting - Furuno 1722C Operator's Manual

4. VIDEO SOUNDER OPERATION
Press the [GAIN] key to show the gain window, and rotate the [ENTER] knob to
set the gain. Current level is shown on the bar. Press the RETURN key to finish.
The setting range is 0-100 (%).
Note 1: On the dual-frequency display, the gain can be independently set for 50
kHz and 200 kHz. Use the FREQ 50/200 soft key to select the
frequency for which to adjust gain.
Note 2: Gain cannot be adjusted in the automatic sounder mode. The message
"SOUNDER GAIN CANNOT BE CHANGED IN AUTO MODE" is
displayed when you attempt to do so.
4.4.4

Range shifting

The basic range may be shifted up or down as desired by pressing the SHIFT
soft key followed by adjusting the [ENTER] knob or ▲ or ▼ on the cursor pad.
Press the RETURN soft key to finish.
4-10
GAIN 200kHz
27
HIGH
LOW
Gain window
Shift concept