Observator Instruments OMC-140, Installation Manual

Page: 49 / 68

OMC-140 Installation Manual Page 49
$--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
1 2 3 4 5
1. Course over ground, degrees True
2. Course over ground, degrees Magnetic
3. Speed over ground, knots
4. Speed over ground, km/hr
5. Mode Indicator:
A = Autonomous mode
D = Differential mode Corrections from ground stations or Satellite Based Augmentation
System (SBAS).
E = Estimated (dead reckoning) mode
M = Manual input mode
N = Data not valid
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. P is also used for satellite system used in multi-frequency, or
Precise Point Positioning (PPP) mode
S = Simulator mode
This Mode Indicator field shall not be a null field.
$--XDR,a,x.x,a,c--c,
...…………...a,x.x,a,c--c*hh<CR><LF>
1 2 3 4 5 6
1. Transducer type, Transducer #1
2. Measurement data, Transducer #1
3. Units of measure, Transducer #1
4. Transducer #1 ID
5. Data for variable # of transducers
6. Transducer 'n'1
Recognized XDR messages:
Parameter 1 2 3 4 remarks
Temperature (Celsius)
C xx.x C AT 4 <> WATER or DP
4 = empty also recogninzed
Humidity (Relative in %)
H xx P RH 4 = ignored
4 = empty also recognized
Dewpoint (Celsius)
C xx.x C DP
Barometric pressure
(Bar) P xx.x B 4 <> QNH or QFE
Barometric pressure
QNH
(Bar) P xx.x B QNH
Barometric pressure
QFE
(Bar) P xx.x B QFE
Water temperature
(Celsius) C xx.x C WT 1 = W (4 empty) is also recognized