SYSTEM INSTALLATION MANUAL
89000016
Table 1021. KGX Control Panel Connections (DB-9) (Cont)
Pin
Signal
Electrical
I/O
Description
6
GND
Ground
GND
Signal common
7
REM ON
Open/GND
O
Remote power control (Ground: ON, Open:
OFF)
8
POWER
6 to 10 VDC
Pwr
KGX control panel power
9
GND
Ground
GND
KGX control panel power common
12. KGX Control Panel Interface Details
A.
Power
CAUTION:
DO NOT CONNECT TO AIRCRAFT INPUT POWER.
(1)
The KGX control panel uses 5.5 to 10 volts from the KGX (typically approximately 7 volts).
B.
Remote ON
(1)
The remote ON output controls the power to the KGX. This is connected to the KGX REM ON
input (J1-32) to remotely control power to both units.
C.
TMAP Bus
(1)
TMAP is a proprietary protocol using RS-485 bi-directional serial bus between the KGX control
panel and KGX. The KGX control panel RS-485 lines (TMAPA and TMAPB) are connected to
the KGX RS-485 lines (TRxD3+ and TRxD3-) respectively.
D.
Altitude Out
(1)
The KGX control panel outputs pressure altitude data on an RS-232 serial output
pin (ALT_OUT) at 9600 baud using the Icarus format (refer to SERIAL INTERFACE
SPECIFICATIONS, Paragraph 2). The pressure altitude data output depends on the altitude
input configuration.
(2)
If the KGX is configured with an altitude/air data input (ARINC or serial port), then the KGX
control panel will use the same data on Pin 4 (ALT_OUT).
(3)
If the KGX is not configured with an altitude/air data input, then the pressure output of the
KGX control panel defaults to its built-in altitude encoder. If the built-in altitude encoder is
used then it must feed the aircraft transponder so that the transponder and the KGX share
the same altitude source.
Table 1022. KGX to KGX Control Panel Connections
KGX (DB-44)
KGX Control Panel (DB-9)
Pin
Signal
Pin
Signal
J1-18
Vcp
8
POWER
J1-2
GND
1,6,9
GND
J1-32
REM ON
7
REM ON
EFFECTIVITY
ALL
Page 1019
22 Dec 2016
© Honeywell International Inc. Do not copy without express permission of Honeywell.