MAINTENANCE MANUAL
IFR 4000
2-2-3
Page 51
Aug 1/04
STEP DATA
RESULT
(12) Glideslope
MODULATION FREQUENCY, DISTORTION AND DEPTH ACCURACY
7. Verify 90 Hz (
±
0.02%) with <2.5% distortion and AM Depth of
40% AM (
±
2% AM)
________
9. Verify 150 Hz (
±
0.02%) with <2.5% distortion and AM Depth of
40% AM (
±
2% AM)
________
DDM ACCURACY
11. Verify readings:
0.000
CENTER
0.000
(
±
0.003 DDM
________
0.091
UP
0.091
(
±
0.003 DDM +
±
3% of setting)
________
0.091
DOWN
0.091
(
±
0.003 DDM +
±
3% of setting)
________
0.175
UP
0.175
(
±
0.003 DDM +
±
3% of setting)
________
0.175
DOWN
0.175
(
±
0.003 DDM +
±
3% of setting)
________
0.400
UP
0.400
(
±
0.003 DDM +
±
3% of setting)
________
0.400
DOWN
0.400
(
±
0.003 DDM +
±
3% of setting)
________
13. Verify readings:
0.176
0.176
(
±
0.0048 DDM +
±
3% of setting)
________
0.177
0.177
(
±
0.0048 DDM +
±
3% of setting)
________
0.178
0.178
(
±
0.0048 DDM +
±
3% of setting)
________
0.179
0.179
(
±
0.0048 DDM +
±
3% of setting)
________
PHASE ACCURACY
16. Verify readings:
0
0
°
(
±
0.5
°
) ________
5
-5
°
(
±
0.5
°
) ________
10
-10
°
(
±
0.5
°
) ________
20
-20
°
(
±
0.5
°
) ________
40
-40
°
(
±
0.5
°
) ________
80
40
°
(
±
0.5
°
) ________
120
0
°
(
±
0.5
°
) ________
Summary of Contents for IFR 4000
Page 1: ...NAV COMM Test Set Maintenance Manual 1002 5600 4P0 IFR 4000...
Page 3: ...MAINTENANCE MANUAL IFR 4000 FOR QUALIFIED SERVICE PERSONNEL ONLY...
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Page 166: ...MAINTENANCE MANUAL IFR 4000 2 3 1 Page 6 Aug 1 04 STEP PROCEDURE 4 Remove the Fuse...
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