Eagle Electronics UltraNav II GA5

Surface Mounting -

Without Access

If you don't have

access to the back side of the

mounting surface,

use

the "cleats" supplied with the

UltraNav II. (Note: This is assuming you

can "snake" the

module's cableto a location that is accessable. A hole

will still need to be drilled in

the mounting surface for the

cable.) Using

the gasket

as a

template, mark and drill the 17mm (11/16") hole for the

cable. Attach the cable to the module .and dropthe

other end of the

cable

through the

gasket

and down the hole. Place the

module on the

gasket. Slide the "cleats" onto each end of the module and (using the

cleats as templates) mark four holes for 5 mm (#10) mounting screws.

Drill the

holes, then replace the cleats on the module and

fasten them

the

mounting surface with 5 mm (#10) screws. Route the cable to the

UltraNav II.

strength (the higher

the num-

ber,

the

better), and the

signal-

to-noise ratio (SNR).

The

high-

erthe SNR

number, the

better,

also.

The lower half of the screen

shows statistics for

each of the

receiver's five channels. This

includes the satellite number

(PRN), its status (STAT), the

User Differential Range Error

(UDRE), Time status (TIME), and if SA

(Selective

Availablity) is on or off.

The UDRE is the range

error

from

your position to the

satellite. If there is

an "OK" in this

field,

then the

range errorto that satellite is 8 meters or less

68 percent

of the time.

For mOre

information, read your

beacon receiver's manual.

SELECT UNITS OF

MEASURE

(See the Select Units of Measure in the Plotter section of

this manual.)

TRUE and MAGNETIC POSITION

True and magnetic north are not

always the

same. True north is

the

top of

the world. It's where all lines of

longitude converge. Magnetic

north is the

location our

compasses point. It lies

several hundred miles to the south of

true north, at a location in Canada.

Charts are

usually

laid out

according

aMercatorprojectionthatuses true

north. If

you ptot

a course on chart using

the Mercator projection, you'll

either have to convert magnetic readings to true or use true

readings.

The UltraNav II can display navigation information in magnetic or true.

When it's turned on for

the first time

magnetic is used. To switch to

true,

press

the MENU keywhile

a GPS screen is

displayed.

Next, press

the

key

next to the

"CHANGE GPS SETTINGS" label.

Now press

the key next to

the "SELECT UNITS

OF MEASURE' label. Nowsimply pressthe key

to the "BEARING" label; This moves the black box from "MAG" to "TRU."

Press the

key next to the "EXIT" label when

you're

finished.

4 73

"CLEAT"

• DRILL FOUR

PLACES

GA5

CABLE

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