Furuno 1623 Operator's Guide

2
Automatic Adjustment of
Sensitivity
1. Press the [GAIN] key consecutively until
the display shown below appears.
GAIN
20
[GAIN] : A/C SEA MENU
[MENU/ESC] : Exit.
AUTO : MODERATE
MANU
2. Press up arrow to choose AUTO.
3. Press right arrow to open the automatic
gain options window.
4. Press up or down arrow to choose
ROUGH, MODERATE or CALM as
appropriate.
5. Press left arrow to finish.
Automatic Suppression of Sea
Clutter
1. Press the [GAIN] key consecutively until
the display shown below appears.
A/C SEA
20
[GAIN] : A/C RAIN MENU
[MENU/ESC] : Exit.
AUTO : MODERATE
MANU
2. A/C SEA adjustment window
3. Press up arrow to choose AUTO.
4. Press right arrow to open the automatic
A/C SEA options window.
5. Press up or down arrow to choose
ROUGH, MODERATE or CALM as
appropriate.
6. Press left arrow to finish.
Suppressing Rain Clutter
1. Press the [GAIN] key consecutively until
the display shown below appears.
A/C RAIN
[GAIN] : GAIN MENU
[MENU/ESC] : Exit.
65
2. While observing the screen and the A/C
RAIN tuning bar, press left or right arrow
to adjust the A/C RAIN. The setting
range is 0-100.
3. Press the [MENU/ESC] key to finish.
Measuring the Range by VRM,
Measuring the Bearing by EBL
1. Press the [MARK] key to show the Mark
menu.
MARK MENU
 [GAIN] : EBL
[ALARM] : VRM
[MARK] : TLL OUTPUT
2. Range: Press the [ALARM] key to
display the VRM.
Bearing: Press the [GAIN] key to
display the EBL.
3. Range: Operate the cursor pad to place
the VRM on the inside edge of the target.
Bearing: Operate the cursor pad to
bisect the target with the EBL.

Furuno 1623 Specifications

General

Power Output	2.2 kW
Display Type	LCD
Waterproof Rating	IPX6
Power Supply	12-24 VDC
Display Size	6 inches
Range	16 nautical miles
Antenna Length	15 inches