Magellan GPS PROMARK X, User Manual

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Getting Started
2-18
ProMARK X
Press the DOWN ARROW to see
the current datum, date, and time. POS WGS84
09/12/93
22:58:02UT
~
Press the DOWN ARROW again to
see which satellites were used to
compute the position, the SQ, and
the PDOP of the fix. (See Appendix
8 and 9 for a description of PDOP
and SQ.)
Press the DOWN ARROW again to return to the first screen.
NOTE
You may perform other functions, such as entering a route or
checking satellite status and schedule while the satellite search
and tracking algorithm is on.
Position Fix Updates . The position fix is normally updated approximately
once every second, unless a satellite sets or its signal becomes blocked.
When the unit loses a satellite signal it tries to locate the satellite again and,
if necessary, replaces the satellite with a new one. This rarely takes more than
10 seconds, but if it does, the most recent position fix is displayed with an
Old Data symbol which is explained in the next section.
Message Displays
The ProMARK X displays a variety of messages during the operation of the
unit. Some messages appear as an icon on the fourth line of the screen
during normal operation; they are intended to alert the operator to an
existing condition. A few messages appear on the first two lines of the
screen, and indicate a condition that prevents the unit from performing the
function selected; these are described in Chapter 8.
The following icons and messages may appear on the fourth line of the
screen during normal operation.
POS PDOP 2.2
0 2 2 2 0 2 0 1
1 5 3 0 5 1 7 2
D T T B S T T I I D