User's Manual Part 1

T
2
CAS / Part No. 9000000
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
34-43-20
15 Feb 2003
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
1--28
The RA Display No. 1 and No. 2 buses can be configured for a 429 Data
Recorder function by grounding programming pin (RMP -- 11D). In this mode,
the buses are configured for high speed operation.
5
Performance Management Bus Interface
The TCAS function contains a low speed ARINC 429 bus input (RMP -- 6A,
6B) that is reserved for connection to a performance management system.
The input is provisioned to obtain maximum rate of climb information from a
FMS or Performance Management System (PMS.) The input is provided for
future system enhancements and is currently not used.
6
Magnetic Heading/Attitude Bus Interface
The TCAS function contains a high speed ARINC 429 bus input (RMP--7A,
7B) reserved for connection to an Inertial Reference System (IRS) or
Attitude Heading and Reference System (AHRS). The input lets aircraft
heading and attitude data be input for the purpose of providing for future
horizontal maneuvers. This function has not been implemented on TCAS II
installations, so these pins a re reserved for future use.
7
RS -- 422 Data Recorder Interface
The TCAS function contains an RS--422 interface connected to a data
recorder. The interface consists of two RS--422 input buses and two
RS -- 422 output buses, with a program input to select internal or external
clock operation. The RS-- 422 input buses input a reply enable signal and an
external recorder clock. The RS--422 output buses output the recorder data
and internal 125 KHz clock reference. The interface also contains a
program pin for enabling or disabling the data recorder function. The
RS -- 422 data recorder inputs and outputs are connected to pins on the front
panel 53-- pin PDL connector.
8
ARINC 573 Flight Data Recorder Interface
The TCAS function contains 12 discrete outputs connected to an ARINC
573 flight data recorder. The outputs are used to record informa tion during a
resolution advisory event.
9
ARINC 429 Flight Data Recorder Interface
The TCAS function contains an interface for an ARINC 429 flight data
recorder. The flight data recorder function is activated by grounding a
discrete input pin (RMP -- 11D) on the rear connector. With the discrete input
grounded, flight data is output as high speed ARINC 429 data on the RA
Display No. 1 and No. 2 Buses. With the discrete grounded, the normal RA
Display bus operation is not available.