User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
E. TAWS/RWS and Transponder Input Data Signals
The T
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CAS TAWS/RWS and Transponder functions require a minimum set of data that is
needed to perform within the standard specifications (detailed in RTCA DO-161A
[GPWS], TSO-C151 [TAWS], TSO-C117 [RWS], TSO-C112 [XPDR], DO-260 [MOPS
ADS-B] and DO-181 [MOPS XPDR], refer to NOTE following this paragraph). This
section contains the minimum set of TAWS/RWS and XPDR data signals and the
information/guidelines that is needed by the installer to obtain the correct analog or digital
signal on a specific aircraft. Since the I/O function is very flexible, the installer must keep
in mind that the data signal sources listed in this section are typical for the specified
signal and that the I/O function can be modified via the ASDB to accommodate other
non-typical signal sources.
NOTE:
For T
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CAS Computer Part No.and applicable FAA TSOs and RTCA DOs, refer
to Section 1, Table 1-2 T
3
CAS Unit Configurations.
RWS is not applicable to Part No.9005000-10000, -10101, -10202, -10204, or -
11203.
The information in this section will include External Sensor Input accuracies for specific
inputs to T
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CAS GCAM function. These External Sensor accuracies must be met for the
specified inputs in order for the T
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CAS to perform the TAWS/RWS and Transponder
functions. Inputs to T
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CAS GCAM function consist of errors due to the external system
sensor plus measurement errors within the T
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CAS LRU. In addition, for analog inputs the
internal T
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CAS errors due to the hardware circuit are also considered.
GNSS equipment interfacing with T
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CAS must be compliant with TSO-C129a, Airborne
Supplemental Navigation Equipment Using the Global Positioning System (or
subsequent), or any revision of TSO-C145, Airborne Navigation Sensors Using the
Global Positioning System Augmented by the Satellite Based Augmentation System,
TSO-C146, Stand-Alone Airborne Navigation Equipment Using the Global Positioning
System Augmented by the Satellite Based Augmentation System, or TSO-C196, Airborne
Supplemental Navigation Sensors for Global Positioning System Equipment Using
Aircraft-Based Augmentation.
(1) Vertical Speed (Digital/Analog)
The TAWS/RWS Vertical Speed parameter is updated from an Inertial, GPS or
Air Data Computer source. The IRS/GPS source can be any one of the following:
ADIRS, GPIRS, IRS, AHRS, GPS and ADC.
NOTE:
When Vertical Speed is unavailable from an IRS or GPS source, the
alternate variable Baro Altitude Rate will be used from an ADC
source.
Vertical velocity equipment interfacing with T
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CAS must be compliant with TSO-
C8, Vertical Velocity Instruments, or TSO-C106, Air Data Computer.
Pub. No. 8600200-001, Revision 004
34-45-29
4-145
04 Nov 2014
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