User's Manual

ROCKWELL COLLINS
COMPONENT MAINTENANCE MANUAL with IPL
TDR-94, PART NO 622-9352
STEP PROCEDURE DESIRED RESULTS
6.3 P4 Pulse Width Variation, ATCRBS-ONLY ALL
Interrogate with a P1, P3, P4 ATCRBS-Only All-Call. Vary the
P4 pulse width from 0.60 to 1.00  s. Verify that the reply rate
is NOT GREATE R than 10%.
Signal level (dBm)
-75 -22
BOT _____ _____
TOP _____ _____
6.4 P4 Pulse Width Variation, ATCRBS/MODE-S ALL CALL
Interrogate with a P1, P3, P4 ATCRBS/MODE-S All-Call. Set
theP4pulsewidthto1.1and2.4 s. Verify that the reply rate
is NOT GREATE R than 10%.
Signal level (dBm)
-75 -22
BOT _____ _____
TOP _____ _____
6.5 P4 Minimum Pulse Width, ATCRBS-ONLY ALL CALL
Interrogate with a P1, P3, P4 ATCRBS-Only All-Call. Set P4
pulse width to 0.30  s. Verify that an ATCRBS reply occurs
within 3.00 ±0.50  s from P3, at a rate of AT LEAST 90%, and
the MODE-S reply rate is NOT GREATER than 10%.
10% or < MODE-S reply
90% or > ATCRBS reply
Signal level (dBm)
-75 -22
BOT _____ _____
TOP _____ _____
BOT _____ _____
TOP _____ _____
6.6 P4 Position Variation, ATCRBS/MODE-S ALL CALL
Interrogate with normal P1, P3, P4 ATCRBS/MODE-S All-Call
interrogations. Deviate the P4 position ±50 ns. Verify that the
All-Call replies are transmitted at a rate of AT LEAST 90%.
Signal level (dBm)
-75 -22
BOT _____ _____
TOP _____ _____
6.7 P4 Amplitude 6 dB Below P3
Interrogate with ATCRBS/MODE-S All-Call interrogations.
Adjust the P4 amplitude 6 dB below the amplitude of P3. Verify
that the MODE-S reply rate is NOT GREATER than 10% and
the ATCRBS rate is AT LEAST 90%.
10% or < MODE-S reply
90% or > ATCRBS reply
Signal level (dBm)
-75 -22
BOT _____ _____
TOP _____ _____
BOT _____ _____
TOP _____ _____
Final Performance (Customer Acceptance) Test. Cont.
Table 1001/Table 34-50-96-99A-009-A01
34-50-96
Page 1022
May 18/06