Furuno 841, 821 manual Menu Operation, Target on collision course with your vessel?

To erase the EBL, press and hold down the [EBL] key for about three seconds.

1.5NM

0.5

Target

EBL

VRM	EBL	+ CURSOR
0.675 NM 300.1°R		0.675NM 300.1°R

EBL bearing

Figure 2-9 Measuring bearing by the EBL

Tips for measuring the bearing

•Bearing measurements of smaller targets are more accurate; the center of larger tar- get echoes is not as easily identified.

•Bearings of stationary or slower moving targets are more accurate than bearings of faster moving targets.

•To minimize bearing errors keep echoes in the outer half of the picture by chang- ing the range scale; angular difference be- comes difficult to resolve as a target approaches the center of the display.

Target on collision course with your vessel?

You can determine if a target might be on a collision course with your vessel by placing the EBL on the target. If it tracks along the EBL as it approaches the screen center it may be on a collision course with your vessel.

2.12 Menu Operation

The menu, consisting of 6 sub menus, mostly contains less-often used functions which once preset do not require regular adjust- ment. To open or close the menu, press the [MENU] key. You can select items on the menu with the cursor pad.

Basic menu operation

1)Press the [MENU] key to open the menu. The main menu appears.

● MAIN MENU ●

Select item by ▲▼ keys and press ENT key.

1.Backlight/Brilliance

2.P/L, IR, NR & Radar Mode

3.Nav Data

4.Mode & Function

5. Tuning AUTO MANUAL

6.Self Check

7.Installation Setup 1

. . . . . . . . . . . . . . . . .

Press HM-OFF to temporarily hide menu.

<Press MENU key to escape.>

Figure 2-10 Main menu

2)Press the cursor pad to select menu and press the [ENT] key.

3)Press the cursor pad to select menu item.

4)Press the cursor pad to select option.

5)Press the [ENT] key to register selection.

6)Press the [MENU] key to close the menu.

Menu description

See the table on the next page.

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