Manual Raytheon NAV398GPS LORAN (page 16 of 74) (English)

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3.3

Basic Operations

Now that the NAV unit has been properly installed and the keypad layout

has been described, we should be ready to begin learning the basic operations

of the unit. So, let’s press the power key and get going!

3.3.1 Turning Unit On/ Off

To turn the unit ON, press

themlkey.

To turn the unit

OFF,

press the /pwRp<ey

andmqkeys

simultaneously.

The LCD screen will go blank and the unit will be OFF.

3.3.2 Contrast/Backlighting Level

The LCD display contrast level and the keypad

illumination may be adjusted for dusk or night

use and viewing. While the unit is ON, just press

them1

key to turn the backlighting menu On.

The Backlighting menu is only temporary and

will disappear when 7 seconds have elapsed

with no keys pressed.

CONTRAST

HI LO

LITE

PRESS CLEAR TO EXIT

3.3.2.1 Contrast Setting

When the

BackLight

menu appears, use

thelwpT/4[and[T

keys to

vary the contrast level of the LCD for best viewing. The level ranges from 0

to 15.

The/eikey

increases the contrast

level;llkey

decreases the

contrast level, as the arrows indicate.

3.3.2.2 Backlighting

Use

thelc/uolkey

to highlight HI, LOW, or OFF. The selection becomes

the active choice when it is backlighted in the menus.

3.3.3 Auto Start-up

Each time the

NAV

398 is turned “ON”, the

NAV

398 ID screen indicates

operation has begun. While this screen is in view, the

NAV

398

is beginning

an internal self-test to verify that the Loran-C sensor, GPS sensor, or both (if

connected) are working, as well as testing its own internal memories.

The

NAV 398

ID screen usually appears for about 3 seconds. The smaller

characters on this screen show the

version of the operating software program

used inside the NAV unit. This version number is handy information to

remember should a problem develop within the unit.

OPERATION 3-3

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Raytheon NAV398GPS LORAN Manual

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