DGPS
18.0 m
CLR
SET
SET
CANC
H
0
10
20
30
40
ADJ
SEL
GPS 34°18.000N 135°01.000E
USING DGPS
ON OFF
BEACON FREQUENCY
283.5KHZ
AUTO
BEACON BAUD RATE
100 200
OPERATION
The DPGS is a newly established system intended to improve the positioning precision of the GPS. (Optional RD-200 is
required).
This chapter describes how to correct the positioning data using DGPS data, select the beacon station, and set the baud rate.
When you activate the marine plotter (e.g. Icom FP-561) either of two screens will be displayed. The Plotter screen or the
Sounder screen. All functions are able to be accessed and activated from these two screens.
(1) Using the DGPS
(2) Setting the beacon
frequency and baud rate
DGPS
18.0 m
CLR
SET
SET
CANC
SEL
H
0
10
20
30
40
GPS 34°18.000N 135°01.000E
USING DGPS
ON
OFF
BEACON FREQUENCY
283.5KHZ AUTO
BEACON BAUD RATE
100 200
To set the beacon frequency and baud rate (transmission speed), proceed as
follows.
q
Press the [MENU] key.
The Main Menu screen will appear.
w
Select “Positioning Menu” screen using the [UP] or [DOWN] key and press the
[SET] key.
The Positioning Menu screen will appear.
e
Select “DGPS” using the [UP] or [DOWN] key and press the [SET] key.
The DGPS setting screen will appear.
r
Select “Beacon Frequency” using the [UP] or [DOWN] key and press the [SET]
key.
AUTO (default) will turn yellow.
t
Select the frequency field using the [LEFT] key. (See
NOTE
)
y
Set the frequency using the [UP] or [DOWN] key and press the [SET] key.
• Set the frequency of the beacon station nearest to the current ship position.
(Refer to the supplied Beacon Station Lists.)
u
When the frequency fields have been set, select “beacon baud rate” using the
[UP] or [DOWN] key and press the [SET] key.
The selected item turns blue.
i
Select “100” or “200” using the [LEFT] or [RIGHT] key and then press the [SET]
key. The beacon baud rate will be set as you selected.
• If the Frequency of the beacon station has been set manually the baud rate of
the beacon station must also be entered manually. (See
NOTE
)
o
When you finish setting the beacon frequency and baud rate, press the [MENU]
key.
You will return to the previous screen.
Using the DPGS data allows correction of the positioning data received by the
built-in GSP receiver.
q
Press the [MENU] key.
The Main Menu screen will appear.
w
Select “Positioning Menu” using the [UP] or [DOWN] key and press the [SET]
key.
The positioning screen will appear.
e
Select “DGPS” using the [UP] or [DOWN] key and press the [SET] key.
The DGPS setting screen will appear.
r
Select “Using DGPS” using the [UP] or [DOWN] key and press the [SET] key.
The selected item turns blue.
t
Select “ON” using the [LEFT] key and press the [SET] key. (default: OFF)
The selection is now saved.
y
When you finish setting, press the [MENU] key.
You will return to the previous screen.
NOTE:
Generally when setting the beacon frequency please select the ”AUTO” option (as in step
t
). This will
automatically select the highest (closest) signal intensity to the ship's present position. If the system fails to
synchronize with this beacon station for one minute, it automatically starts to search for the highest signal in-
tensity, again.
In cases where the beacon frequency has been manually selected after referral to the supplied
BEACON STA-
TION LIST,
ensure the corresponding baud rate is also entered. If both the beacon frequency and the baud
rate are not correctly entered the position correction signal will not be received.
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