I
II
l.“,T..
-se
NWV 9PB
II
L”
H
NAV
398
ROM OK
MRSON
1
0
‘&WON
1.0
RAM
OK
-4
SENSOR OK
NOW TESTING
I
I I
1
To SIONAL SYAYU.9 (IF NOT
lMCNlN0)
To FMlYlON DlSFiAY IF TRACK,,,O.
The ID screen is then followed by a second screen which advises that the
SELF TEST is in process, and a third screen prints the
SELF TEST
results .
anytime by pressing the
The Signal Status screen provides a readout or the progress made by the
sensors in acquisition and tracking of the signals. Once full signal lock-on
has been achieved, the screen switches to the
Position
display, the Auto
Startup sequence is completed, and normal operation is underway.
3.3.4 Selecting Loran/GPS Mode
One key feature of the
NAV
3%
is that the unit can be either a loran or GPS
depending on the type of sensor that is connected,
.or
both, if a sensor for
each system is attached. Normally, if only one sensor is used, the unit detects
the type of sensor and automatically puts the
NAV
unit into the correct system
mode during the Auto Start-up program. If both the RayNAV 508/A Loran-C
and
Raystar
108 GPS sensors are connected,
.each
system will always be
operating and normally tracking signals and either system can provide your
position and NAVigation data instantly.
TheI-
key is used to toggle the unit
between the two system sensors. The systems
can be changed anytime you are on the
PM-
tion, NAVigation, CDI, or PLOT modes.
When the GPS mode is selected, “GPS”
characters become illuminated along the bot-
tom left edge of the LCD display and the
latitude/longitude position and ship’s course
and speed data is then GPS derived.
OPERATION 3-4
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