Consilium SELUX ST, Installation And Service Manual

Page: 50 / 180

SERIAL INTERFACE SPECIFICATION
2.15 Rev. E
NOTE 1
Mode Indicator. A variable length valid character field type with the first two
characters currently defined.
The first character indicates the use of GPS satellites, the second character indicates the
use of GLONASS
satellites. If another satellite system is added to the standard, the mode indicator will be
extended to three
characters; new satellite systems shall always be added to the right, so the order of
characters in the mode
indicator is: GPS, GLONASS, other satellite systems.
The characters should take one of the following values:
N = No fix. Satellite system not used in position fix, or fix not valid.
A = Autonomous. Satellite system used in non-differential mode in position fix.
D = Differential. Satellite system used in differential mode in position fix.
P = Precise. Satellite system used in precision mode. Precision mode is defined as: no
deliberate degradation
(such as selective availability), and higher resolution code (P-code) is used to compute
position fix.
R = Real time kinematic. Satellite system used in RTK mode with fixed integers.
F = Float RTK. Satellite system used in real time kinematic mode with floating solution.
E = Estimated (dead reckoning) mode.
M = Manual input mode.
S = Simulator mode.
The mode indicator should not be a null field.