Conformity Inspection; Ramp Test; Aircraft Address And Maximum Airspeed Verification - Honeywell BENDIX KING KT 73 Installation Manual

Preliminary - Subject To Change Without Notice
BENDIX/KING
(5)

Conformity Inspection

Visually inspect the installed equipment to determine the use of acceptable work-
manship and engineering practices. Verify that all mechanical and electrical connec-
tions have been made properly.
(6) Ramp Test (see section 2.4.1.3, 2.4.1.4)
The following test will be conducted to verify operation.
1)
2)
2.4.1.3 Ramp Test (Per AC 20-131A)
This test requires the use of a Mode S Ramp Tester. Specific instructions for operating the ramp
tester are contained in the applicable operator's manual. In systems with dual transponders and
altitude sources configure the system to check each function. Table 2-2 lists tests that will be per-
formed during ramp testing. In addition, Table 2-2 contains a brief description of each test and the
pass/fail criteria.
TEST
RF Power Output
RF Frequency
ATCRBS Receiver
Sensitivity
Mode S
Reply Delay
Rev 0, October/2002
1) Rotate ident code selector knob. Verify the most significant digit increas-
es from zero to seven with clockwise rotation and decreases with a
counter-clockwise rotation.
2) Repeat step 1) for the remaining three digits of the squawk code.
3) Momentarily push the IDENT switch to store the selected code. (The
code will automatically be stored after a five second period if Ident switch
is not momentarily pushed.)

Aircraft Address and Maximum Airspeed Verification.

Verify that the correct Aircraft Address and Maximum Airspeed has been pro-
grammed correctly.
The Aircraft Address may be verified when the KT 73 is first powered on. See
Section 3.2.1 for details.
Reply Frequency
Verify that the reply frequency is 1090 ± 1 MHz.
DESCRIPTION
Measures the effective radiated power
output from the antenna.
Measures the transmit frequency
Measures the receiver minimum triggering
level (MTL) for a 90% reply rate.
Measures the time difference between the
transponder interrogation and reply.
TABLE 2-2 RAMP TESTS
(Sheet 1 of 2)
10563I00.JA
KT 73
PASS/FAIL
CRITERIA
Minimum of 125 watts.
1090 MHz ±1 MHz
-74 dBm ±3.0 dBm
128 µsec ± 0.25 µsec.
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