Lynx
®
NGT-9000
Pilot’s Guide
4-4
Principles of TAS Operation
TA SyMBOL DURATION
A TA symbol remains on the screen for at least 8 seconds, even if the
intruder aircraft no longer meets the TA criteria, as long as the Lynx
NGT-9000 continues to track the aircraft.
OTHER AIRCRAFT GROUND FILTERING
The traffic awareness system ignores other aircraft that is determined
to be on ground (not airborne). Intruders determined to be below 380
ft AGL will not be output with the TAS active traffic output.
NOTE
Since the Lynx NGT-9000 also receives ADS-B traffic
information, aircraft no longer output by TAS may still be
displayed based on the received ADS-B traffic data.
INTERFERENCE LIMITING
To assure that interference effects from active TAS equipment are
kept to a minimum, the FAA requires TAS equipment to “interference
limit,” i.e. reduce its transmit power, when it is operating in congested
airspace. This limiting function is based on the number of TCAS
II
interrogators detected via Mode S broadcast reception and the reply
rate of your transponder. Interference limiting reduces the effective
surveillance range of the TAS equipment and is independent of the
display range selected; therefore, selecting a display range of 20 nmi
does not guarantee a 20 nmi TAS surveillance range when operating
in high density areas.
NOTE
This interference limiting function is for active TAS and does
not affect the range at which ADS-B reporting traffic will be
received. It also does not limit the range at which the Lynx
NGT-9000 ADS-B output will be received by other aircraft.
Summary of Contents for 9029000-20000
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