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Screen Contrast
The GPS 126/128 has adjustable screen contrast
controlled by an on-screen bar scale.
To set the screen contrast from the Menu Page:
1. Highlight the ‘contrast’ field, and press
F
.
2. Adjust the bar scale to the desired contrast, and
press
F
.
Note: The screen contrast can also be adjusted by
pressing the rocker keypad while viewing the Satellite
Page (see pg. 13).
Screen Backlighting Timer
The screen backlight timer is adjustable for 15, 30,
60, 120, or 240 seconds. The timer also may be set to
the “Stay On” setting for continuous use. Whenever
backlighting is on, a bulb icon will appear on the
Satellite Page.
To set the backlight timer:
1. Highlight the ‘light’ field, and press
F
.
2. Select the desired setting, and press
F
.
3. To turn lighting on and off, press the
P
briefly.
Navigation Setup
The navigation setup submenu page is used to
select units of measurement for position formats, map
datums, CDI scale, units, and heading information.
Position Formats
The default position format for the GPS 126/128 is
latitude and longitude in degrees and minutes
(hdddºmm.mmm’). You may also select degrees, min-
utes and seconds (hdddºmm’ss.s’’); degrees only
(hddd.dddddº); UTM/UPS coordinates; or British,
German, Irish, Maidenhead, Swedish, Swiss, or Taiwan,
or User grid formats.
To select a position format:
1. Highlight the ‘position format’ field, and press
F
.
Select the desired setting, and press
F
.
47
REFERENCE
Screen Contrast
& Backlighting
The position format may
be set to display your
choice of many formats.
Note: degree and minutes
is the default setting.
The “Stay On” setting will
keep your backlighting on
continuously.
126/128 Manual (new) 6/15/98 9:51 AM Page 47