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5. MENU OPERATION
5-20
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.
85.0 kHz (85-95 kHz)
FREQ SHIFT (L) :
FREQ SHIFT (H) : 215.0 kHz (205-225 kHz)
: CHANGE MENU: END
** TX FREQ ADJUST **
: SELECT
TX frequency adjustment dialog box
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.
OFF ON
DEMO MODE :
: CHANGE MENU: END
** DEMO MODE **
Demo mode dialog box
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.