Transducer Frequency Adjustment; Demonstration Mode - Furuno CH-300 Operator's Manual

5. MENU OPERATION
5.4.11

Transducer frequency adjustment

If the CH-300 is receiving interference from a video sounder or other sonar on board your
ship, adjust the frequency of the CH-300's transducer to reduce the interference.
FREQ SHIFT (L)
FREQ SHIFT (H)
: SELECT
5.4.12

Demonstration mode

The demonstration mode provides a simulated sonar picture which helps you become
acquainted with how your sonar works. Connection of the transducer is not required. All
controls are operational.
1. Display the SYS menu.
2. Choose DEMO MODE.
3. Press ► to open the menu.
DEMO MODE
: CHANGE
4. Choose OFF or ON as appropriate and press the MENU key. (DEMO) appears at the
top of the screen when the demonstration mode is active.
5-20
** TX FREQ ADJUST **
: 85.0 kHz (85-95 kHz)
: 215.0 kHz (205-225 kHz)
: CHANGE MENU: END
TX frequency adjustment dialog box
** DEMO MODE **
: OFF
MENU: END
Demo mode dialog box
ON