NorthStar 941X Reference Manual page 36

DGPS status
Page 28
On five-channel 941Xs, the last bar at the bottom of the screen
will sometimes "jump" around once per second as the 941X
receiver sequences among other satellites.
The following GPS data is also displayed:
ACCURACY: The estimated accuracy of the GPS system to be ACCURACY
ACCURACY ACCURACY
expected at the current time. Your position readings should be more ac-
curate than this estimate 95% of the time.
HDOP HDOP: This is a technical measure of the "quality" of your fix. HDOP HDOP
HDOP (Horizontal Dilution of Precision) can range from an ideal value
of 1, up to 10 or more. Any value less than 2 indicates excellent perform-
ance. HDOP is calculated from the satellites' current positions, and is not
based on actual received signals. You will usually see an HDOP value
displayed immediately after the unit is turned on, and before it is ready
to navigate.
Press the RETURN menu key to return to the previous screen.
To display more information about DGPS corrections that are being re-
ceived, press the DGPS menu key on the GPS position screen. A screen is
displayed showing the DGPS beacon transmitter currently in use. The
upper part of the screen shows the beacon's name and position, the fre-
quency of the transmitter, and the baud rate of the transmitted data.
3 — Basic Navigation 3 — Basic Navigation
3 — Basic Navigation 3 — Basic Navigation
NOTE
Rev. D