Furuno 1722C, 1753C, 1742, 1733C, 1752 Transmitting, Stand-by, Adjusting the Gain, Tuning window

2. RADAR OPERATION

2.2Transmitting, Stand-by

1.Turn the power on. The products information appears and is then followed by the radar screen. You can display the radar screen at once by pressing the any key.

2.Press the [POWER/BRILL] key momentarily.

3.Press the RADAR STBY soft key to highlight TX on its label.

4.When the radar picture is not required, but you want to keep it in a state of readiness, press the [POWER/BRILL] key momentarily followed by RADAR TX soft key.

5.Press the RETURN soft key to finish.

2.3Tuning

The radar receiver can be tuned automatically or manually, and the default tuning method is automatic. To adjust manually or switch to automatic tuning, do the following:

1.Press the [MENU] key to display the main menu.

2.Press the RADAR DISPLAY SETUP soft key.

3.Select TUNING and press the EDIT soft key.

TUNING°§

AUTO

MAN Tuning bar

Tuning window

4.Choose MAN or AUTO as appropriate.

5.For manual tuning, adjust the [ENTER] knob until the tuning bar is at its longest position.

6.Press the RETURN soft key.

7.Press the [MENU] key to close the menu.

Note: If the auto setting does not provide satisfactory tuning, see the installation manual for how to adjust tuning.

2.4Adjusting the Gain

The [GAIN] key adjusts the sensitivity of the radar receiver. It works in a manner similar to the volume control of a broadcast receiver, which amplifies received signals.

The proper setting is such that the background noise is just visible on the screen. If your gain setting is too low, weak echoes may be missed. On the other hand excessive gain yields too much background noise; strong targets may be missed because of the poor contrast between desired echoes and the background noise on the display.

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