Gps; Gps1 - Gps Status Screen; Gps2 - Gps Health Screen - NorthStar MX500 Operator's & Installation Manual

Operator's Manual

GPS

Several GPS and DGPS screens are available under the GPS func-
tion key. The GPS/DGPS functions are highly interactive with these
CFG1 menu selections:

GPS1 - GPS Status Screen

There are two windows in this display. The left window has twelve
graphic Power Bars representing the twelve GPS receiver channels
of the MX421 antenna. The PRN (PseudoRandom Number) under
each power bar represents the satellite ID number assigned or being
tracked on that channel. The power bars indicate the valid receiver
power range from 30 to 50. Any portion of the power bar which is
filled in, indicates that a satellite is being tracked on that channel. If
a power bar is empty, but a PRN number is labeled under the power
bar, then the identified satellite is not currently being tracked.
The graphic on the right hand side of the screen indicates where the
satellites are relative to your present position. The outer ring repre-
sents 0° elevation. The inner ring represents 45° elevation. The +
sign represents 90° elevation and your present position. Under nor-
mal conditions, the best satellites to track are usually between 15 and
75 degrees in elevation.
GPS 3 through GPS 4 screens are skipped under normal operation.

GPS2 - GPS Health Screen

There are two windows in this display, the top window is a table
indicating which satellites are reported Healthy or Unhealthy by the
satellite almanac. The PRN (PseudoRandom Number) ID table is di-
vided into columns and rows. The rows represent the 10's digit of the
100
GPS - sets the lowest elevation at which a satellite will be tracked.
DGPS - sets the internal beacon receiver to Auto, DGPS only, or
Off.
Position
Version 3.0