Lynx NGT-9000s
Installation Manual
1.4.4 Audio Out
Two audio out discrete outputs are available that can output a 40 mW signal to equipment with a load of
600 Ohms.
1.4.5 RF Suppression Input/output
The mutual suppression input/output is used to provide suppression of L-band equipment on the aircraft.
The transponder uses the signal as an input to inhibit decoding of receiver signals when other equipment
on the aircraft is transmitting. When the transponder transmits, it asserts a positive voltage on the output
to provide the suppression to other systems on the airplane.
1.4.6 TAS Alert
Traffic Alert is a discrete output that provides an indication of when a TAS Alert exists. Discrete outputs
are ground/open type and are able to sink 250mA.
1.4.7 TIS-B Not In Coverage
The TIS-B Not In Coverage discrete output provides an indication that the unit is not in an Radar
coverage area or that power has been removed from the unit. Discrete outputs are ground/open type and
are able to sink 250mA.
1.4.8 WiFi Interface
The Unit uses a RS-232 bus to interface with a commercially available RS-232 to Wifi accessory. This
interface provides traffic and weather information on a personal electronic device via an approved
software application (APP).
1.4.9 WOW Input
The WOW input discrete is optional. The input signals the On Ground status to the unit via squat switch,
Airspeed monitor, or a collective switch. The discrete input is active (ON) when the input is grounded.
•
Do not connect this to a gear switch or a manual pilot switch input.
•
An internal algorithmic override that uses ground speed and altitude inputs may override this input
and change the air/ground state (ex. a WOW "in-air" state could get changed back to on ground if the
Aircraft is sitting on the ground). This is expected behavior. If simulated in-air tested is required,
use the ground test mode.
1.4.10 Maintenance Interface
The Unit can interface to a maintenance computer using either the WiFi interface or the USB port located
on the front of the unit. This interface is used for installation setup and fault isolation and is only available
while on ground.
1.4.11 GPS Antenna
Antenna performance is critical to the operation of the Unit. The unit requires that the GPS Antenna meet
performance requirements specified in TSO-145c.
0040-17001-01
General Information
Page 1-9
Revision A
January 15, 2015
