User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 4−56
15 Dec 2005
Table 4−9. RCZ−852 Diversity Mode S Transponder Interface Descriptions (cont)
Connector Pin
Designation
Functional Description
J1−93 XPDR STRAP DATA (P) INPUT:
Connect Strap Board connector pin W1P1−7 (white wire) to J1−93. This input receives
the serial data from the Strap Assembly that is used to program the desired system
options and Mode S address.
J1−99 XPDR ACTIVE (NO) OUTPUT:
This discrete output can be connected to an RF relay for systems that use a single
antenna connected to two transponders for the purpose of switching the antenna to the
active transponder. A Ground (200 mA maximum) output is provided when an Active
transponder mode is selected. An Open (>100K ohms to ground) output is provided
when Standby mode is selected.
J1−100 XPDR VALID (NO) OUTPUT:
This discrete outputs the status of the transponder continuous monitor tests. A Ground
(200 mA maximum) output is provided when the transponder is operational and an active
transponder mode is selected. An Open (>100K ohms resistance to ground) output is
provided when the transponder has failed or the Standby mode is selected.
This pin should be connected to the Control Panel XPDR FAIL input.
J1−102 ALT VALID (NO) OUTPUT:
This discrete outputs the status of the altitude source when the transponder is in an active
mode and altitude reporting is enabled. A Ground (200 mA maximum) is output when the
selected altitude source is valid and the transponder is in an altitude reporting mode. An
Open (>100K ohms resistance to ground) output is provided when the selected altitude
source is invalid or the transponder is in Standby or not in an altitude reporting mode.
This pin should be connected to the Control Panel ALT FAIL input if applicable.
J1−103 XPDR STRAP GROUND OUTPUT:
Connect Strap Board connector pin W1P1−4 (black wire) to J1−103. This output is the
return line for the +5 volt output. See pin 90.
J1−104 RESERVED FUNCTION:
Connect Strap Board connector pin W1P1−1 (green wire) to J1−104.
J1−105 RESERVED FUNCTION:
Connect Strap Board connector pin W1P1−8 (yellow wire) to J1−105.
J2 BOTTOM ANTENNA RF INPUT:
RF input signal from bottom antenna.
J3 TOP ANTENNA RF INPUT:
RF input signal from top antenna.