NorthStar 941x 사용자 설명서
Page 30
3 — Basic Navigation
3 — Basic Navigation
3 — Basic Navigation
3 — Basic Navigation
Rev. D
MESSAGE
MEANING
OLD CORRECTIONS
No DGPS corrections have been received
within the DGPS DATA TIMEOUT limit set
in RECEIVER OPTIONS (default is 1 min-
ute), and the navigator has returned to non-
differential operation. See “GPS data time-
out” on page 89 for details.
within the DGPS DATA TIMEOUT limit set
in RECEIVER OPTIONS (default is 1 min-
ute), and the navigator has returned to non-
differential operation. See “GPS data time-
out” on page 89 for details.
NOT INSTALLED
A beacon receiver is not installed.
UNHEALTHY
BEACON
The beacon transmitter reports it has prob-
lems.
lems.
UNHEALTHY SATS
Data received from satellites cannot be re-
lied upon.
lied upon.
ACQUIRING SATS
1) The GPS receiver cannot operate in
DGPS mode until it has received ephemeris
data from the satellites; or 2) the receiver
does not have a GPS fix yet.
DGPS mode until it has received ephemeris
data from the satellites; or 2) the receiver
does not have a GPS fix yet.
DGPS IN USE/ OK
DGPS corrections are being received and
used.
used.
DGPS signal quality information for the 941X is available from the op-
tional internal beacon receiver, or from an optional external Northstar
beacon receiver. Other brands of beacon receivers may supply DGPS cor-
rections but omit the additional signal information shown on the 941X’s
screen.
tional internal beacon receiver, or from an optional external Northstar
beacon receiver. Other brands of beacon receivers may supply DGPS cor-
rections but omit the additional signal information shown on the 941X’s
screen.
Press the RETURN menu key to return to the previous screen.
If you have a loran receiver connected to your 941X, you can navigate
using loran coordinates as well as GPS. Just select loran as the source of
using loran coordinates as well as GPS. Just select loran as the source of
navigation data, as described below, and you’re on your way.
To display loran TD coordinates from a loran receiver interfaced to the
941X, first select loran as the navigation source, as described below.
941X, first select loran as the navigation source, as described below.
1. Press the STAR key until the USER CUSTOMIZATION screen is
displayed.
2. Press the NAVIGATION OPTIONS menu key. The NAVIGATION
SOURCE line will be designated by the cursor arrow.
3. Press the EDIT menu key. The cursor will begin flashing.
Using Loran
selecting loran
"