User's Manual

TT21/TT22 Transponder Installation Manual 13 July 2009
00560-00 Issue AF
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Page 4 Trig Avionics Limited
3. Technical Specifications
3.1 TT21 Transponder Unit (00675-00)
Specification
Characteristics
Compliance
ETSO 2C112b Class 2 Level 2els, ETSO
C166a Class B0
FCC Identification
VZI00675
Applicable documents
EUROCAE ED-73B, EUROCAE ED-14F
(RTCA DO-160F), RTCA DO-181D, RTCA
DO-260A change 2
Software
ED-12B (RTCA DO-178B) Level B
Hardware
DO-254 Level C
Power Requirements
11 – 33 Volts DC. Typical 5 Watts @ 14Volts.
Altitude
35,000 feet
Humidity
95% @ +50°C for 6 hours; 85% @ +38°C for
16 hours.
Tested to Category A in DO-160F
Operating Temperature
-20°C to +70°C
Transmitter Frequency
1090MHz ± 1MHz
Transmitter Power
125 Watts nominal; 71 Watts minimum at
antenna after allowing for 0.5dB connector
losses and 1.5dB cable losses.
Transmitter Modulation
6M75 V1D
Receiver Frequency
1030 MHz
Receiver Sensitivity
-74dBm ± 3dB