Appendix, Gps status screen – Magellan RoadMate 6000T User Manual

Page 117

Appendix

107

GPS Status Screen

GPS STATUS Screen Structure-first page

It is ordered by the channel number from 1 to 12.

Where:

d1: Satellite PRN number, with “e” or “E” to the right means got ephemeris data, “v” or “V” to the right means got verified

ephemeris data (double check). “E” or “V” also means got satellite time for this channel.

d2: Azimuth,

degrees

d3:

Elevation angle, in degrees

d4:

SNR (signal to noise ratio), it is ratio-Hz, not dB unit

c1:

U – Used for position fix, U – Not used for position fix

Bad fix code

0 PVT_OK :good fix

2 ILLEGAL_ALT: illegal altitude < -10km or > 17.5km

4 POSITION_JUMP: too big position jump between two epoch (300 miles)

5 ILLEGAL_VELOCITY_OR_ALT: max velocity 951mile

7 TOO_BIG_ACCELERATION max 15m around 1.5g

8 TOO_SMALL_ALTITUDE -10000 m

9 TOO_BIG_ALTITUDE 17,500 m

10 TOO_BIG_PDOP max PDOP 50

11 SATS_BELOW_MASK_ANGLE satellite elevation angle is below mask angle

16 ILL_DEFINED_3D_MATRIX 3X3 matrix can not be inverted in 3D fix

PRN

SNR

U/N

09 d1