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400 SERIES MAINTENANCE MANUAL Page v
P/N 190-00140-05 Rev. C
SECTION 5
ALIGNMENT, CALIBRATION, AND TESTING
Paragraph Page
5.1 INTRODUCTION .................................................................................................5-1
5.2 RECOMMENDED TEST EQUIPMENT ...............................................................5-1
5.3 TEST SETUP.......................................................................................................5-3
5.4 STANDARD SIGNALS AND TEST LOADS.........................................................5-3
5.4.1 VHF Com Transceiver.....................................................................................5-3
5.4.1.1 Standard Loads...............................................................................................5-3
5.4.1.2 Standard Signals.............................................................................................5-4
5.4.2 Glideslope .......................................................................................................5-4
5.4.2.1 Standard Loads...............................................................................................5-4
5.4.2.2 Standard Signals.............................................................................................5-4
5.4.3 NAV Receiver..................................................................................................5-5
5.4.3.1 Standard Loads...............................................................................................5-5
5.4.4 VOR Standard Signals ....................................................................................5-6
5.4.4.1 Standard Test Signals.....................................................................................5-6
5.4.5 Localizer Standard Signals..............................................................................5-7
5.4.5.1 Standard Test Signals.....................................................................................5-7
5.5 ALIGNMENT........................................................................................................5-9
5.6 CALIBRATION.....................................................................................................5-9
5.6.1 Com Setup Page Fields ................................................................................5-10
5.6.1.1 Com Frequency.............................................................................................5-10
5.6.1.2 Frequency Spacing .......................................................................................5-10
5.6.1.3 SQ 250 ..........................................................................................................5-10
5.6.1.4 SQ 833 ..........................................................................................................5-10
5.6.1.5 Sidetone ........................................................................................................5-11
5.6.1.6 MIC Gain .......................................................................................................5-11
5.7 TEST PROCEDURES .......................................................................................5-12
5.7.1 Test Mode .....................................................................................................5-12
5.7.2 Com Testing..................................................................................................5-14
5.7.2.1 Power Input Check........................................................................................5-14
5.7.2.2 RF Power Out................................................................................................5-15
5.7.2.3 Frequency Stability and Tolerance................................................................5-16
5.7.2.4 Modulation Capability Test............................................................................5-16
5.7.2.5 Carrier Noise Level........................................................................................5-17
5.7.2.6 Demodulated Audio Distortion.......................................................................5-17
5.7.2.7 Demodulated Audio Response......................................................................5-17