Honeywell BendixKing KT 76C Installation Manual page 9

B
Sensitivity and Dynamic Range:
Transmitter Characteristics:
Reply Transmission Frequency:
RF Peak Power Output:
ATCRBS Reply Rate Capability:
Reply Pulse Characteristics:
ATCRBS Reply Pulse Positions
Rev 3, May 2004
ATCRBS TRANSPONDER
Table 1-1 KT 76C Technical Characteristics
The minimum triggering level (MTL) is defined as the
minimum input power level that results in a 90% reply
ratio if the interrogation has nominal pulse
characteristics.
A. The MTL for ATCRBS will be -73 dBm +/- 4 dB.
B. The reply ratio will be at least 90% for ATCRBS
interrogations between MTL and 50 dB above MTL.
C. The variation of MTL between ATCRBS Mode A
and Mode C interrogations will not exceed 1 dB.
The transmitter frequency of the reply will be 1090+/-
3MHz when observed in a 50Ω load with a VSWR of
1.2:1 or less.
The transmitter output power will be 125 watts peak
power minimum and 500 watts peak power maximum
at the terminals of the transponder antenna. The pulse
amplitude variation between any two pulses in an
ATCRBS reply will not exceed 1 dB.
The transponder will be able to continuously generate
at least 500 ATCRBS 15-pulse replies per second and
will have the capability of a peak reply rate of 1,200
ATCRBS 15-pulse replies.
NOTE: A 15-pulse reply includes 2 framing pulses, the
12 information pulses, and the SPI pulse.
The reply function will consist of two framing pulses
and 13 information pulses. The pulse spacing
tolerance for each pulse (including the last framing
pulse) with respect to the first framing pulse of the
reply group will be +/- 0.10 µsec. The pulse spacing
tolerance of any pulse in the reply group with respect
to any other pulse (except the first framing pulse) will
be no more than +/- 0.15 µsec.
IM 006-10545-0003.dwd
KT 76C
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