Raymarine GPS navigation User Manual download pdf (Page 61)

COURSElBEARlNG TYPE

TRUE

NAV SETUPS MENU

blAGNEllC

)

COURSBIBBARINPS

)

-D

MANUAL VARIATION

)

POSITION

CORR.

PRESS CLEAR

EXIT

AVERAGING

)

PMSS

CLEAR

TO Exrr

3.10.4 NAV Setups Menu- Loran

NAV Setups for Loran include making choices of bearing types, position

corrections, and averaging constants for smooth (but responsive) readouts.

3.10.4.1TrueBlagnetic Modes

As with most navaids, Course and Bearing readouts can appear referenced

to True North or Magnetic North on the screen. When the

COURSE/BEARINGS

softkey is pressed the

COURSEBEARINGTYPE

menu permits selection of True

or Magnetic readouts. On the menu:

Press

thd=Jsoftkey

for True Bearings.

Press thelMACNETiC[key for Automatic Magnetic Bearings

Press

the/

MANUAL VARIATION

softkey

for manual Magnetic bearings

True North mode

When the unit is shipped from the factory the readouts for Course and

Bearing are displayed in “Magnetic North”. To display “True North” data’ it

is necessary to de-activate the “AUTO” Magneticvariation mode. Press the

/TRUEJkey

The Course and Bearing readouts will now be in degrees “True”.

The “mag” indicators, on the screen, will become ‘Ys.

Magnetic North Mode

when

thef~(orlMANUAL

VARIATION(keys

are pressed, the unit will

produce magnetic courses and bearings. The primary difference between these two

modes is that the variation values often from area to area. The

automatic variation program selected

softkey

can adjust for

these changes. The Manual variation mode uses a fixed value that is usually

accurate for a specific area.

Manual Magnetic Variation

In rare cases the Auto Mag Variation may be off by a degree in certain

Lat/Lon

locations. In this case, you could turn OFF the Auto magnetic

OPERATION 3-48

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Raymarine GPS navigation User Manual Page 61

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