User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 1-15: T
3
CAS Computer Unit Leading Particulars (cont.)
Item
Specification
XPDR Pulse Timing Characteristics:
● Pulse Rise Time 0.05 to 0.10 µsec
● Pulse Fall Time 0.05 to 0.20 µsec
●
ATCRBS S1, P1, P3, P4 Duration
0.45 ± 0.05 µsec
●
Mode S P1, P2 Duration
0.5 ± 0.05 µsec
Whisper-Shout Characteristics:
● Range 0 to 27 dB attenuation by 1 dB steps
●
Absolute Tolerance
Relative to the 0 dB step, the attenuation
of each step does not exceed the
nominal attenuation by more than ±2 dB
●
Relative Tolerance
Step increments are ±0.5 dB and
monotonic
TCAS RF Receiver Characteristics:
●
Receiver Frequency Range
1087 to 1093 MHz
●
Receiver MTL Over Frequency
(Nominal Operation)
-77 ±2 dBm (≥90% Mode S and
ATCRBS replies decoded)
Receiver Dynamic Range
(Normal Operation)
-77 to -24 dBm (≥99% Mode S and
ATCRBS replies for signal levels greater
Than MTL +3 dB)
●
Low-level Receiver Signal Rejection
(Normal Operation)
-81 dBm (≤10% Mode S and ATCRBS
replies decoded)
●
Receiver Signal Processing
Amplitude Mono-pulse
●
System Bearing Accuracy
Error less than 9 degrees RMS, 27
degrees peak from -10 to +10 degrees
elevation
ADS-B RF Receiver Characteristics:
●
Receiver Frequency Range
1089 to 1091 MHz
●
Receiver MTL Over Frequency
(Normal Operation)
≤-87 dBm (= 90% Interrogations
decoded)
●
Receiver Dynamic Range
(Normal Operation)
-87 to -24 dBm (≥99% for signal levels
greater than MTL +3 dB)
●
Reply Reception
-90 dBm (≥15% ADS-B squitter replies
decoded)
XPDR RF Receiver Characteristics:
●
Receiver Frequency Range
1029.8 to 1030.2 MHz
Pub. No. 8600200-001, Revision 004
34-45-29
1-51
04 Nov 2014
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