BENDIXKing AeroNav 910 Pilot's Manual page 72

AeroNav 900/880 Series Pilot's Guide
The 3D traffic uses the same symbology as that in the traffic
thumbnails and map overlays but the traffic depictions in the
SynVis scene attempt to indicate relative threat level by size and
symbol and are depicted at the relative altitude and bearing as
received from the traffic sensor, consistent with the SynVis field of
view. As traffic draws nearer to your ownship position, it grows
in size in the SynVis scene. Traffic outside of 10nm will not
display, however, if the traffic is a "Proximity" or "Traffic Alert" it
will display.
3D Traffic Symbology in SynVis Scene
The TVV will grow in size when it is behind the deviation
indicators or heading digital readout bubbles in order to stay
viewable.
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2-4 SVS Subsystem Rev 1 May 2019