Transmitting, Stand-By; Tuning; Adjusting The Gain - Furuno 1823C Operator's Manual

2. RADAR OPERATION
2.2

Transmitting, Stand-by

1. Confirm that the network radar is plugged in.
2. Press the [DISP] key to select a radar display.
3. Press the [POWER/BRILL] key momentarily.
4. Press the RADAR STBY soft key to highlight TX on its label.
5. Press the RETURN soft key.
When the radar picture is not required, but you want keep it in a state of
readiness, press the RADAR TX soft key to highlight STBY on its label.
2.3

Tuning

The radar receiver can be tuned automatically or manually, and the default
tuning method is automatic. If you require manual 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, then press the EDIT soft key.
4. Choose MAN.
5. Adjust the [ENTER] knob until the tuning bar is at its longest position.
6. Press the [MENU] key to close the menu.
Note: If the auto setting does not provide satisfactory tuning, ask your dealer
how to re-adjust tuning.
2.4

Adjusting the Gain

The [GAIN] key adjusts the gain sensitivity of the radar receiver. It works in a
manner similar to that of 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.
To adjust the receiver sensitivity, transmit on long range, and then do the
following:
2-2
TUNING
¤
AUTO
¡
MAN
Tuning window
Tuning bar