NorthStar 958 Manual Do Utilizador
Chapter 5 - Determining Your Position
958 Operator’s Manual, Rev. A
Page 65
low for best results. Table 3 below describes the noise lev-
els.
els.
A summary of DGPS operations is displayed at the bottom of
the DGPS STATUS screen. The table below summarizes these
status messages.
the DGPS STATUS screen. The table below summarizes these
status messages.
Table 3: Definitions of noise levels
Noise level value
Meaning
200 or less
excellent
200 - 1,000
good
1,000 - 3,000
typical at night
5,000 - 10,000
thunderstorms or electrical noise
Table 4: DGPS status messages
DGPS message
Meaning
NO CORRECTIONS
Beacon receiver status message is being received, but no SC-104
DGPS corrections are present.
DGPS corrections are present.
NOT INSTALLED
No beacon receiver status message is being received, nor has an
external DGPS source been chosen.
external DGPS source been chosen.
SC-104 IN OK
An external source has been chosen, and the required data is being
received.
received.
SC-104 IN FAIL
An external source has been chosen, but the required data isn’t
being received.
being received.
RESULTS UNKNOWN
The communication link to the GPS receiver has a problem.
BCN UNHEALTHY
The beacon station in use is either unhealthy or unmonitored.
DISABLED
DGPS has been turned off by the user (to enable DGPS, see
”Changing your receiver settings” starting on page 172).
”Changing your receiver settings” starting on page 172).
INIT OR SYNCH
The GPS receiver is trying to initialize the messages from the bea-
con receiver.
con receiver.