User's Manual

05-4446A01, Rev. C Mercury Reference Manual 107

GPS Status Menu

Invisible place holder

Figure 3-77. GPS Status Menu

¥ GPS Serial NumberThe serial number of the GPS unit in the

radio.

GPS Firmware VersionThe firmware version running on the

GPS chip.

Satellite Fix StatusIndicates whether or not the unit has

achieved signal lock with the minimum required number of

GPS satellites. The transceiver requires a fix on five satellites to

achieve Precise Positioning Service (PPS) and four to maintain

PPS. [

No Fix, Fix]

¥ Number of SatellitesShows the number of GPS satellites

received by the transceiver. Although there are typically 24

active GPS satellites orbiting the Earth twice a day, only a sub-

set of these is visible to a receiver at a given location. A good

signal provides information from six to ten satellites.

LatitudeShows the transceivers latitudinal location (in

degrees), based on GPS data received from the satellites.

LongitudeShows the transceivers longitudinal location (in

degrees), based on GPS data received from the satellites.

AltitudeShows the transceivers altitude above sea level (in

feet), based on GPS data received from the satellites.

GPS InformationShows data about the individual satellites

being received, including the Pseudo-Random Noise (PRN)

code (a unique bit stream for each satellite), the satellites ele-

vation (in degrees), azimuth (in degrees), and the sig-

nal-to-noise ratio of the carrier signal (SNR).

Figure 3-78 on

Page 108

shows a layout example for this screen.