User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-3: Gables Control Panel Interface Descriptions (cont)
Connector
Pin
Designation
Functional Description
J1/J2-21
LAMP TEST INPUT: (J1/J2-21)
To initiate a lamp test, J1 or J2 pin 21 must be grounded through an external
switch. All segments and annunciators in the control panel LCD (except RPLY and
decimal points) are ON for as long as this input is grounded. ARINC 429 labels are
not affected by the activation of a lamp test mode.
J1/J2-22, 23
ARINC 429 OUTPUTS: (J1/J2-22, 23)
Communication between the control panel and the transponder is done over a two
wire low-speed, odd parity, ARINC 429 compatible bus. Selected ATC code,
operating mode, and system parameters are communicated to the transponder
over these lines. Transmission of labels 013, 015, 016, and 031 is done every 150
msec.
Connect these pins to one of the two transponder ARINC 429 CONTROL DATA
Input Ports.
J1/J2-24
AIR/GROUND INPUT DISCRETE: (J1/J2-24)
The control panel accepts input from two independent Air/Ground (WOW) switches
for applications that require automatic disabling of the transponder upon landing.
This input is wired directly to the AIR/GROUND SW Discrete Output (J1/J2-15).
Table 4-4: Thales 41-Pin VSI-TCAS Interface Description
Connector
Pin
Designation
Functional Description
J1-1
VERTICAL SPEED +dc REFERENCE INPUT:
Pins 1, 2, and 3 are inputs to the VSI/TRA from an ARINC 575 air data computer
indicating vertical speed. Pin 1 is a +12 V dc regulated reference voltage from the
ADC. Pin 3 is a -12 V dc regulated reference voltage from the ADC. Pin 2 receives
a +10 to -10 V dc rate signal from the ADC. Also see pins 31, 32, and 33.
J1-2
VERTICAL SPEED dc RATE INPUT:
See pin 1.
J1-3
VERTICAL SPEED -dc REFERENCE INPUT:
See pin 1.
Pub. No. 8600200-001, Revision 004
34-45-29
4-73
04 Nov 2014
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