Telephonics Corporation
R ADAR SYSTEMS D IVISION
TM113806 (3/10) 1-17
Table 1.3.5-1
Navigation ARINC 429 Data Labels (Cont)
LABEL DEFINITION UNITS RESOLUTION
TX RATE
(HZ)
NAVIGATION
OVERLAY
TRACKER
MODE
NOTES
312 Ground Speed KT 0.125 KT 1 Yes Yes If not present then the ground speed will not be displayed
in Navigation Overlay mode.
Required for proper Tracker operation. If not present
then the tracker will be non-operational and “AMS Data
Fail” will be displayed
Not required for Target Marker mode.
313 Track Angle –
True
Deg 0.044 deg 1 Yes Yes If not present then the track angle will not be displayed
in Navigation Overlay mode.
Required for proper Tracker operation. If not present
then the tracker will be non-operational and “AMS Data
Fail” will be displayed
Not required for Target Marker mode.
314 True Heading Deg 0.0055 Deg 10 Yes Yes This is the primary source for True Heading. The tracker
will use the AHRS data bus as a secondary source for
true heading if not available on FMS bus.
Required for Navigation Overlay. If not present then a
“NO NAV” fault will be displayed if navigation overlay
mode is selected.
Required for proper Tracker operation. If not present
then the tracker will be non-operational and “AMS Data
Fail” will be displayed.
If not present, then the Target Marker function will
output relative range and bearing only. The target
marker will not output lat, long, or true heading to target.
315 Wind Speed KT 1.0 KT 2 Yes No If not present then the wind speed will not be displayed
in Navigation Overlay mode.
Not required for Tracker Operation or Target Marker
mode.
316 Wind Angle Deg 0.703 Deg 2 Yes No If not present then the wind angle will not be displayed
in Navigation Overlay mode.
Not required for Tracker Operation or Target Marker
mode.
The document reference is online, please check the correspondence between the online documentation and the printed version.
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