Garmin GPSMAP 440 User Manual download pdf (Page 10)

4 GPSMAP 400/500 Series Owner’s Manual

Getting Started

Minimum Safe Depth—select the minimum safe depth for your

boat. Refer to your boat specications for more information.

Shallow Water Alarm

—only available if you are receiving NMEA

sonar depth data. Select Yes or No.

Minimum Overhead Clearance

—select the minimum overhead

clearance for your boat. Refer to your boat specications for more

information.

AIS Alarm Range

—select the distance in which an alarm will

sound if an AIS vessel nears your boat (page 44).

AIS Alarm Time To

—select the time within which an alarm will

sound if an AIS vessel is on track to intersect the Safe Zone around

your boat (page 44).

If a water speed wheel is detected, a message will ask if you want to

calibrate it now. Select Yes or No.

Adjusting the Backlight

1. Press and release the Power key.

2. Select Backlight.

3. Press left or right on the Rocker to manually adjust the backlight.

NOTE: Press the Power key repeatedly to cycle between

maximum backlight, minimum backlight, and your manual setting.

To allow the unit to automatically adjust the backlight based on

ambient light, select Auto Backlight (automatic backlight is

available only on the GPSMAP 535, 536, 545, and 546).

To switch between Day mode and Night mode:

1. Press and release the Power key.

2. Select Color Mode.

3. Press left or right on the Rocker to switch between modes.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 81 82

No comments

Garmin GPSMAP 440 User Manual Page 10