IFD500 Series Pilot Guide
4-40 Map Subsystem
ADS-B Traffic
Thumbnail
Status
Indicates the ground is not providing
TIS-B or ADS-R services to your aircraft.
The primary causes of this are:
The aircraft is not in range of a
ground station
the aircraft is not providing qualifying
ADS-B Out information
the ADS-B In device is not
configured for the correct tail number
This indication is common and normal at
low altitudes, but if you never get TIS-B
service while in a known service area
and at sufficient altitude (above 1500ft in
most of CONUS), it likely means there is
a misconfiguration of your ADS-B Out or
ADS-B In device.
If an individual intruder displays “DGRD” in yellow in the traffic
thumbnail, then that intruder is reporting its own GPS position
accuracy (HFOM, VFOM) as outside normal operating limits.
TRAFFIC SENSOR CONTROL
Because traffic sensor mode changes are automatic based on phase
of flight, manual control of the sensor is generally unnecessary.
However, if a manual mode change is desired, it can be changed
using the traffic thumbnail. To change the sensor mode, touch the
mode shown in the lower third of the thumbnail. Repeated touches
will cycle through all available modes. If the thumbnail is displayed
on the left side of the IFD, adjacent to the top LSK, then the LSK can
also be used to cycle through the modes.
When the installed traffic sensor is a Skywatch and the aircraft is not
airborne, "Standby" mode is included in the cycle of selectable
modes. When the standby mode is selected, the thumbnail can be
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