Furuno GP-3700 Operator's Manual page 113

How to display position in DECCA TDs
1. Press the MENU key to open the main menu.
2. Select [8. PLOTTER DISPLAY SETTING].
3. Select [3. LORAN/DECCA SETTING].
4. Select [DECCA CHAIN].
5. Press the numeric keys to enter chain number (01 to 48). [RCH LST] is displayed
at the bottom of the window.
6. Press the numeric keys to set the chain station combination from [RCH LST] at
the bottom of the window. If necessary, follow the procedure from step 7 to enter
offset. Otherwise, go to step 12.
7. Select [OFFSET VALUE 1].
8. Press the numeric keys to enter offset. To switch between + and -, press the CUR-
SOR ON/OFF key.
9. Enter offset for [OFFSET VALUE 2] in the same way.
10. Select [TIME DIFF. DISP TYPE].
11. Select [DECCA].
12. Press the DISP key to close the menu.
How to set calculation method for TDs
The value for TDs on the display differ depending on datum type though own ship po-
sition is same.
1. Press the MENU key to open the main menu.
2. Select [8. PLOTTER DISPLAY SETTING].
3. Select [3. LORAN/DECCA SETTING].
4. Select [LOP FORMULA].
5. Select [NEW] or [EARLIER].
[NEW]: Displays position, calculated by WGS-84 datum, in TDs (or phase differ-
ence).
[EARLIER]: Displays position, calculated by TOKYO datum, in TDs (or phase dif-
ference).
6. Press the DISP key to close the menu.
9. OTHER FUNCTIONS
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