Great Plains DICKEY-john AI-120 12-inch Virtual Terminal - Manual (Page 187)

OPERATOR’S MANUAL
AI-120 Virtual Terminal
11001-1606B-201310
APPENDIX A / 179
GPS accuracy is determined as follows:
HDOP < 1.0 gps accuracy = 100
HDOP between 1.0 and 4.0 accuracy = inverse percentage of hdop
between 1 and 4 examples:
– 1.1-->93%
– 2 -- >.75%
– 3 -- >43.75%
HDOP > 4 gps accuracy goes to 1
GPS invalid, gps accuracy goes to 0
The correction source icon is green for the differential source selected,
otherwise it is red.
When auto correction mode is selected, the icon color changes vary
depending on the correction source it is picking up at the time:
When correction source is selected:
(DGPS, WAAS, EGNOS, MSAS, VBS) button is green
– otherwise button is red
XP (Omnistar XP solution) button is green
– otherwise button is red
HP (Omnistar HP solution) button is green
– otherwise button is red
RTK (RTK fixed position mode) button is green
– otherwise button is red
AUTONOMOUS OR ANY (for fixed RTK, float RTK, XP, HP) button is green
DGPS fix (VBS, WAAS, EGNAS, MSAS) button is yellow
– otherwise button is red
With AGI-3, if the signal hasn’t yet converged to a level sufficient for auto
steering, the icon is yellow, not green.