User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 1-5 - T3CAS Unit Deviation Notes
• TSO-C151c, Sections 4(a) and 4(b)
• TSO-C166a, Sections 4(a), 4(b) and 4(c)
• TSO-C166b, Sections 4(a), 4(b) and 4(e)
This deviation allows TSO-C112d, TSO-C117a, TSO-C151c, TSO-C166a and TSO-C166b part
marking details to be listed in this installation manual instead of on the article’s label. See Table 1-2
in this manual for marking details.
Deviation 10: TSO-C112d and TSO-C166b: DO-160E 21.4 Radiated RF Emissions
The T
3
CAS Processor has a high power RF transmitter which is used to generate 1090 MHz
waveforms for Mode S Transponder and ADS-B OUT functions. Due to the high RF power
requirement and inherent non-linearities in RF transmitters, the harmonics of the transmitter exceed
the RF radiated emissions limit in DO-160E Category M. The T
3
CAS deviates from DO-160E Section
21 Category M Radiated RF Emissions in the following frequency bands when the transmitter is
active:
2180 ±78 MHz (2nd Transmitter harmonic) Exceeds Cat M limits by as much as 20dB
3270 ±78 MHz (3rd Transmitter harmonic) Exceeds Cat M limits by as much as 20dB
4360 ±23 MHz (4th Transmitter harmonic) Exceeds Cat M limits by as much as 5dB
5450 ±23 MHz (5th Transmitter harmonic) Exceeds Cat M limits by as much as 5dB
The avionics installer must conduct the appropriate testing required to ensure that other aircraft
systems are not adversely affected in the above frequency bands when the T
3
CAS transmitter is
active.
Deviation 11: TSO-C119d: DO-160E 21.4 Radiated RF Emissions
The T
3
CAS Processor has a high power RF transmitter which is used to generate 1030 MHz
waveforms for the TCAS function. Due to the high RF power requirement and inherent non-linearities
in RF transmitters, the harmonics of the transmitter exceed the RF radiated emissions limit in DO-
160E Category M. The T
3
CAS deviates from DO-160E Section 21 Category M Radiated RF
Emissions in the following frequency bands when the transmitter is active:
2060 ±60 MHz (2nd Transmitter harmonic) Exceeds Cat M limits by as much as 20dB
3090 ±60 MHz (3rd Transmitter harmonic) Exceeds Cat M limits by as much as 20dB
4120 ±60 MHz (4th Transmitter harmonic) Exceeds Cat M limits by as much as 5dB
5150 ±60 MHz (5th Transmitter harmonic) Exceeds Cat M limits by as much as 5dB
The avionics installer must conduct the appropriate testing required to ensure that other aircraft
systems are not adversely affected in the above frequency bands when the T
3
CAS transmitter is
active.
Deviation 12: TSO-C117a: DO-160B 2.3 Environmental Conditions
The T
3
CAS LRU is tested to the environmental test conditions set forth in Environmental Conditions
and Test Procedures for Airborne Equipment, RTCA DO-160E, December 9, 2004 instead of the
RTCA DO-160B standard called out in TSO-C117a. The T
3
CAS deviates from TSO-C117a to allow
the use of DO-160E Environmental Test Procedures.
Pub. No. 8600200-001, Revision 004
34-45-29
1-11
04 Nov 2014
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.