BENDIXKing KGX 150 System Installation Manual page 71

Pin Signal
J1-35 429 IN 1A
J1-36 429 IN 2B
F. Discrete Inputs
(1) Three discrete inputs are available to supply control inputs to the UAT. Discrete input
connection pins are shown in Table 1017.
NOTE:
Pin Signal
J1-15 TRAF TEST
J1-27 AIR/GRND
J1-12 ANONYMOUS
MODE
(2) Air/Ground Input
NOTE:
(a) The air/ground discrete input connects to an open/ground squat switch or other air/ground
discrete indication. The air/ground discrete is configurable to be either:
• Not connected
• High when airborne
• Low (ground) when airborne.
(b) Deleted.
(c) Airborne or on ground status affects ADS-B message transmission behavior.
(d) Light Aircraft Installations: The KGX automatically determines the air/ground status if
configured to the light aircraft (<15500 lbs) emitter category (refer to CONFIGURATION,
CALIBRATION, AND CHECKOUT, Paragraph 4.E. Step (9) and Paragraph 5.C. (5))
without the use of the external air/ground input discrete.
(e) Other Aircraft Installations: The KGX validates the air/ground status of the external
air/ground input for all other Emitter Categories including Rotorcraft utilizing available
GPS and air (pressure altitude, airspeed, etc.) data.
(f) Rotorcraft Installations: The KGX sufficiently validates an air/ground input discrete based
on collective position or collective position combined with oil pressure, no/low engine
RPM, airspeed, etc. to ensure false On Ground indications are not transmitted during
auto-rotation training and other unusual conditions
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
SYSTEM INSTALLATION MANUAL
89000016
Table 1016. ARINC 429 Ports (Cont)
Electrical I/O
ARINC 429 I
ARINC 429 I
Input pins are pre-configured active low. Refer to SYSTEM INTERCONNECT
DIAGRAMS, Figure 2011 thru Figure 3014 for a wiring diagram reference.
Table 1017. Discrete Inputs
Electrical I/O
Open/ground I
Open/ground I
Open/ground I
Automatic air/ground determination is required for transceiver and transmitter
installations.
Description
ARINC 429 input Port 1A
ARINC 429 input Port 2B
Description
Traffic test
Air/ground in (squat switch - configurable)
Anonymous mode
Page 1015
22 Dec 2016