User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 1-16: T
3
CAS Computer DO-160E Categories (cont.)
DO-160E
Section
Condition Category
17.0 Voltage Spike
Category A, High degree of protection against
voltage spikes (For both 115VAC)
18.0
Audio Frequency Conducted
Susceptibility
Category R(CF) for AC Power Inputs
19.0
Induced Signal Susceptibility
Category CC
20.0 Radio Frequency Susceptibility
Category R for conducted susceptibility
Category R for radiated susceptibility (CW and
Pulse)
21.0
Emission of RF Energy
Category M with deviation (Refer to Table 1-5)
22.0
Lightning Induced Transient
Susceptibility
Category A3 for pin injection tests
Category J13 for cable bundle tests
23.0
Lightning Direct Effects
Category X, Not Applicable
24.0
Icing
Category X, Not Applicable
25.0 Electrostatic Discharge
Category A, Equipment Installed, Repaired, or
operated in an Aerospace Environment
26.0
Fire, Flammability
Category C, by analysis
NOTE:
Regarding DO-160E Section 4.5.5 In-Flight Loss of Cooling, the 6-MCU unit was tested for
18 hours.
(1) System Interfaces
The T
3
CAS Computer Unit supports the external system interfaces that follow.
The specifications apply to the 6-MCU and 4-MCU computer. All interfaces are
per ARINC 735B.
(a) Common System Interfaces
This section defines external system interfaces that are common to the
T
3
CAS functions.
1 Radio Altimeter
The T
3
CAS Computer Unit accepts either analog or digital radio
altimeter inputs. For each type of input, dual input ports are provided.
The external connector pins for Analog/Digital Radio Altitude Inputs
#1 and #2 are shared by TCAS, TAWS/RWS and XPDR. The
Analog/Digital inputs have independent circuitry.
The T
3
CAS CU analog radio altimeter interface accepts either
ARINC 552A, Collins BCA analog input, or metric analog input
formats. The type of input format is selected by program discrete
inputs RMP-12B, -12D, -12E, and -12F. Each analog input contains
a valid discrete used to validate the analog input.
Pub. No. 8600200-001, Revision 004
34-45-29
1-53
04 Nov 2014
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