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Adjusting the backlight – Garmin GPSMAP 545s User Manual

Page 10

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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 specifications 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 specifications for more

information.
aiS alarm Range (is not available if you select

No

for aiS

Receiver)—select the distance within which an alarm will sound if

an AIS vessel nears your boat (

page 49

).

aiS alarm Time To (is not available if you select

No

for aiS

Receiver)—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 49

).

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.