User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 4−26
15 Dec 2005
Table 4−3. ACSS ATCRBS−Mode S Control Panel Interface Descriptions (cont)
Connector
Pin
Designation
Functional Description
J1−16 AIR DATA SOURCE OUTPUT: (J1−16)
Ground/Open output dependent on the front panel ALT RPTG switch position. This
discrete output is enabled (Grounded) when altitude reporting is selected in the ON mode.
When altitude reporting is selected OFF, the J1−16 output is in an Open state.
This discrete output is connected to the transponder AIR DATA SOURCE SELECT
Discrete Input.
J1−18 MONITOR LAMP POWER INPUT: (J1−18)
This input is used as the input power source for the XPDR FAIL annunciator on the front
panel of the control panel. The input supply voltage is a dimmable 26 V dc at 200 mA
maximum.
J1−20 XPDR FAIL #1 DISCRETE INPUT: (J1−20)
This pin is tied directly to control panel pin J1−12. See pin 12.
J1−21 LAMP TEST INPUT: (J1−21)
To initiate a lamp test, pin J1−21 must be grounded through a remote test switch. All
segments in the control panel LCD display will be ON for as long as this input is grounded.
ARINC 429 labels are not affected by the activation of a lamp test mode.
J1−22, 23 ARINC 429 OUTPUTS: (J1/J2−22, 23)
Communication between the control panel and the Mode S 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 milliseconds.
Connect these pins to one of the two transponder ARINC 429 CONTROL DATA Input
Ports.
CONNECTOR J2 INTERFACE DESCRIPTIONS
J2−L ALTITUDE NO.1 OUTPUT: (J2−L)
This discrete output along with pin J2−N and J2−R outputs are used in conjunction with the
ALT RPTG switch on the control panel to enable one of two sources of altitude reporting
data to be selected. These outputs are used only if two altitude sources are used.
Connect this pin to Altitude Digitizer No.1 COMMON output.
J2−N ALTITUDE NO.2 OUTPUT: (J2−N)
See pin J2−L. Connect pin J2−N to Altitude Digitizer No.2 COMMON output.
J2−R ALTITUDE COMMON: (J2−R)
See pin J2−L. Connect pin J2−R to the ATCRBS transponder Altitude Common input.
J2−T TRANSPONDER NO. 2 ON OUTPUT: (J2−T)
This discrete output puts the ATCRBS transponder in either a standby or active mode. It is
used in conjunction with the Mode switch on the front panel of the control panel. The
output uses Ground/Open logic, where an Open specifies Standby and a Ground specifies
an Active mode (ATC On).
Connect this pin to the ATCRBS transponder ON input.