User's Manual

TT21 Transponder Installation Manual 19 January 2009
00560-00 Issue AA
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3. Technical Specifications
3.1 TT21 Transponder Unit (00675-00)
Specification Characteristics
Compliance ETSO 2C112b Class 2 Level 2es, ETSO C166a Class B0
FCC Identification VZI00675
Applicable documents EuroCAE ED-73B, EuroCAE ED-14E (RTCA DO-160E),
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-160E
Operating Temperature -20°C to +70°C
Transmitter Frequency 1090MHz ± 1MHz
Transmitter Power 130 Watts nominal; 71 Watts minimum at antenna after
allowing for 0.5dB connector losses and 1.5dB cable losses.
Receiver Frequency 1030 MHz
Receiver Sensitivity -74dBm ± 3dB
Physical Specifications (in the
mounting tray)
Height 48mm (1.9”)
Width 66mm (2.5”)
Length 160mm (6.3”)
Weight 0.77lbs. (350 g)
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