Raymarine GPS navigation User Manual

Page 21

one degree of longitude. For longitudes of less than 100 degrees, begin the
entry with

After you press the

check to see that the direction symbol

is correctly indicated to the left of your longitude entry. If

is displayed,

press the

to change the symbol to

or vice versa. If the

direction is correct,

Example:

14.50’

If you make any mistakes while entering your longitude, press

key and retype the entry. Then

complete the estimated

position entry.

is pressed to finish your longitude entry, the estimated

entry is complete and the display will return to the Auto Start-up

sequence at the Status page for sensor in use.

3.4.3 The Status Page

The STATUS screens show the condition of

the acquisition and tracking of signals for the

SIGNALSTATUS LORAN

sensor in use.

EST

In normal tracking operation for loran, the

GRI chain and secondary signals received are
indicated in the status box. The most important

ECD

information are the status numbers to the right

PRESS CLEAR TO EXIT

of the

SNR

characters. These numbers show the

progress of the acquisition program towards signal lock-on. When 8’s are

indicated for the Master and selected Secondaries, the loran is “Locked-on”
and tracking the loran signals. At that point the screen automatically will
switch to the Position screen and navigation is available.

In normal tracking operation for GPS, there

is only ONE important indicator indicating
that the GPS is “Locked-on” and tracking the

satellite signals. That indicator is when the

satellite ID number becomes a reversed

“Block” character. When four or more signals

are in this state, the screen will switch to the
Position screen and navigation is now avail-

able.

PRESS CLEAR TO EXIT

OPERATION 3-7