Lynx
®
NGT-9000
Pilot’s Guide2-10
Operation
Current Pressure Altitude
The current pressure altitude (PALT) is located below the Squawk
Code. A value greater than 99,000 ft will set the value to 99900 with
amber text. An invalid pressure altitude is shown as amber dashes.
Flight ID / Call Sign
The Flight ID or Call Sign (tail number) is located below the PALT.
During initial installation either the tail number is setup to be shown
or the Flight ID can be set each flight using the Flight ID screen
(configuration option).
Mode Control
The Mode Control toggle button has the following selections: Standby
(SBY), On (ON), and Altitude (ALT).
Selecting Standby stops all transponder transmission.
Selecting ON puts the transponder in ATC mode A in which it replies
to interrogations, but does not report the plane’s altitude.
Selecting ALT put the transponder in ATC mode C. When the
aircraft is In-Air the transponder replies to interrogations and
includes the plane’s pressure altitude in the replies.
When On-Ground, the display includes an “ON-GND” indication.
While On-Ground the transponder does not reply to All-Call
interrogations and outputs ADS-B at a slower surface rate.
A “FAIL” message, in amber text, is shown if a transponder failure is
detected.
Transponder Reply
When the transponder (XPDR) reply is active an “R” indicator is shown
to the right of the Squawk Code. The “R” is replaced with “IDENT”
when the IDENT button is tapped.
IDENT Button
Tap the IDENT button to transmit the Special Identification (SPI) pulse.
An IDENT pulse highlights the aircraft’s symbol on the ATC’s radar
screen and is identified on the screen next to the squawk code.
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