User's Manual

ROCKWELL COLLINS
COMPONENT MAINTENANCE MANUAL with IPL
TDR-94, PART NO 622-9352
STEP PROCEDURE DESIRED RES ULTS
1.3 Receiver Bandwidth Test
Vary the interrogation RF frequency to 1007, 1053, 1060, and
1150 MHz. Ver ify the MODE-A interrogation level, required to
produce 90% reply efficienc y is greater than -17 dBm .
TOP BOT
1007 MHz ____ ____
1053 MHz ____ ____
1060 MHz ____ ____
1150 MHz ____ ____
1.4 Dynamic Range Test
Verify a minimum reply rate of at least 90% for the following
interrogations at input signal levels of -73 dBm and -19 dBm.
I
nterrogations
A. MODE-S only All-Call
B. ATCRBS MODE-A/MODE-S All-Call
C. ATCRBS MODE-C
Signal level (dBm)
-73dBm -19dBm
TOPBOT TOPBOT
___ ___ ___ ___
___ ___ ___ ___
___ ___ ___ ___
1.5 Sensitivity Limit Test
For the following interrogations at a -81 dBm input signal level,
ver ify that the reply rate does not exceed 10%.
I
nterrogations
A. MODE-S only All-Call
B. ATCRBS MODE-A/MODE-S All-Call
C. ATCRBS MODE-C
TOP BOTTOM
_____ _____
_____ _____
_____ _____
1.6 Un desired Replies
For this test, squitter must be disabled by setting Self-Test Inhibit
discrete input, P2-38 (-004 thr u -007) or P1-19 (-008, -10
8,
-308, -309, -408, -409) to ground. Turn off all interrogations.
Ve r ify that the ATCRBS random replies are less than 5 per
second and the MODE-S replies are less than 1 per 10
seconds, averaged over a period of at least 30 seconds.
After this test, turn interrogations back on and rem
ove the
ground from P2-38 or P1-19.
TOP BOT
ATCRBS ____ ____
MODE-S ____ ____
2.0 TRANSMITTER REQUIREMENTS
Unless otherwise specified, perform the following tests on both
the top and bottom antenna ports using a MODE-S test set. For
the TDR-94, you must do only the tests for the
bottom antenna
por t.
2.1 Transmitter Frequency Test
Ensure that the output transmitter frequency is 1090 ±0.5 MHz. _____ MHz
Final Performance (Customer Acceptance) Test. Cont.
Table 1001/Table 34-50-96-99A-009-A01
34-50-96
Page 1012
Jun 20/08