Chapter 5 - Understanding Position Coordinates
Page 5-10
961 Operations and Reference Manual Rev. D
Using Phantom loran to determine position
What is Phantom
loran?
The 961’s Phantom loran feature is designed for those 961
users who’ve previously compiled lists of fishing spots or other
locations as loran TDs, and who are now using the 961 as a
GPS-only navigator. The 961 mathematically converts GPS lat/
lon coordinates to loran TDs—in real time as you navi-
gate—enabling you to display your current position as TDs.
When entering new waypoints, the 961 lets you enter way-
point coordinates as loran TDs, usually by first pressing a
LL/
TDS
key, which switches the display of coordinates between
lat/lon and loran TDs.
The 961 may be used to simulate full operation of a loran
receiver. Position coordinates may be displayed as TDs, and all
navigation functions may be used as if the unit were actually
receiving loran signals. Remember, however, that these calcu-
lated TDs won’t exactly match the positions of previously
recorded TD coordinates that you obtained from actual loran
signals. In most areas, TD errors shouldn’t exceed one micro-
second; however, larger errors are possible in areas for which
the 961 doesn’t contain accurate factory-programmed ASF cor-
rection points.
Selecting Phantom
loran TDs
The 961 gives you the option to display position coordinates
as Phantom loran TDs. To display TDs on the
CHART
screen
INFO BAR
s (and the
CURSOR INFO BAR
), you must turn on
loran TDs at the
CHART SETUP
screen. The 961’s default set-
ting is
ON
.
1. Press the
STAR
key twice to access the
SETUP MENU
screen.
2. Press the
CHART SETUP
key.
3. Press the
CURSOR PAD
down to highlight the
LORAN
INFO BARS
field, then press the
EDIT
key.
4. Press the
CURSOR PAD
right to select
ON
, then press the
ACCEPT
key.
Содержание 961X
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Страница 8: ...Page viii 961 Operations and Reference Manual Rev D ...
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Страница 58: ...Chapter 2 Introducing the 961 Page 2 16 961 Operations and Reference Manual Rev D ...
Страница 140: ...Chapter 5 Understanding Position Coordinates Page 5 12 961 Operations and Reference Manual Rev D ...
Страница 172: ...Chapter 7 Creating Avoidance Points Page 7 16 961 Operations and Reference Manual Rev D ...
Страница 198: ...Chapter 8 Creating Routes Page 8 26 961 Operations and Reference Manual Rev D ...
Страница 262: ...Chapter 12 Alarms TideTrack and Currents Page 12 16 961 Operations and Reference Manual Rev D ...
Страница 348: ...Chapter 14 Service and Maintenance Functions Page 14 20 961 Operations and Reference Manual Rev D ...
Страница 374: ...Index Page I 12 961 Operations and Reference Manual Rev D ...