HP RC3000 Manual Do Utilizador

 88  

                                    INIT 

 

LAT/LON:*INITIALIZING GPS* 

GETTING LAT/LON FROM GPS 

The LAT/LON: field initially displays the status of communications with the GPS receiver.  The following 
messages may be displayed: 

“*INITIALIZING GPS*” – The RC3000 is establishing communications with the GPS receiver. 

“*NO GPS NAV*” – Communications with the GPS is proceeding but the GPS reports has not yet 
calculated a valid navigation solution.  This typically indicates one of two situations: 

1)  The GPS receiver has not been powered on long enough to have “acquired” enough satellites to form 

a solution.  Typically the GPS receiver will acquire the required number of satellites within several 
minutes from powerup. 

2)  The GPS receiver’s view of the sky is obstructed such that it cannot “see” enough GPS satellites to 

form a solution. 

“*GPS OFFLINE*” – This message indicates that the RC3000 has not established communication with 
the GPS receiver.  The cabling between the RC3000 and the GPS should be checked. 

After obtaining latitude and longitude, the INIT mode waits 10 seconds before pulling in magnetic heading 
from the compass.  During this time the bottom line will flash “GETTING HEADING”.  The 10 second 
delay is to ensure that the compass has settled following any previous platform movement. 

                                    INIT 

                          FLUX HDG:215.2 

LAT/LON:38

°56N  94°45W      MAG VAR:  3.9 

                          TRUE HDG:219.1 

The INIT mode calculates magnetic variation and applies it to the magnetic heading to derive true 
heading. 

Following successful initialization of latitude, longitude and true heading the INIT mode will display a 
“POSITION INITIALIZED” message for two seconds then return to the CALCULATE mode.