Installation Instructions
Table Of Contents
- Installation & Commissioning Handbook Vol. 1
- RECORD OF CHANGES
- TABLE OF CONTENTS
- SECTION 1 ANTENNA INSTALLATION PROCEDURE
- 1 Civil Work Checks
- 2 Localizer Antenna System Assembly
- 3 Glidepath antenna system assembly/towers 10m and 15m
- 4 Near field monitor
- 5 Marker beacon installation antenna assembly
- SECTION 2 SHELTER INSTALLATION
- 1 General
- 2 Mechanical installation LLZ/GP
- 3 Electrical Installation LLZ/GP
- 4 Mechanical Installation Marker Beacon
- 5 Electrical installation marker beacon
- 6 Remote Control Connections (TWR)
- SECTION 3 ANTENNA SYSTEMS ADJUSTMENTS PROCEDURE
- 1 NM 3522 6 elements antenna system adjustments - LLZ
- 1.1 Mechanical alignment of antenna array
- 1.2 Electrical measurements
- 1.3 Course sector width adjustment
- 1.4 Monitor combining unit (MCU) adjustments
- 1.5 Near field monitor adjustments
- 1.6 DC-Loop adjustment and testing
- 2 NM 3523B 12 Elements antenna system adjustments - LLZ (Single frequency)
- 3 NM 3524 12 Elements antenna system adjustments - LLZ (Dual frequency)
- 3.1 Mechanical alignment of antenna array
- 3.2 Electrical measurements
- 3.2.1 CSB and SBO cables
- 3.2.2 CSB/SBO phasing
- 3.2.3 Antenna cable lengths (Electrical phase equality)
- 3.2.4 Antenna pair phasing
- 3.2.5 Phase and amplitude transfer measurement
- 3.2.6 Antenna return loss
- 3.3 Course sector width adjustment
- 3.4 Monitor combining unit (MCU) adjustments
- 3.5 Near field monitor adjustments
- 3.6 DC-Loop adjustment and testing
- 4 NM 3525 24 Elements antenna system adjustments - LLZ
- 4.1 Mechanical alignments of antenna array
- 4.2 Electrical measurements
- 4.3 Course sector width adjustments
- 4.4 Monitor combining unit (MCU) adjustments
- 4.5 Near field monitor adjustments
- 4.6 DC-Loop adjustment and testing
- 5 NM 3526 16 Elements antenna system adjustments - LLZ
- 5.1 Mechanical alignments of antenna array
- 5.2 Electrical measurements
- 5.3 Course sector width adjustment
- 5.4 Monitor combining unit (MCU) adjustments
- 5.5 Near field monitor adjustments
- 5.6 DC-Loop adjustment and testing
- 6 NM 3543 Null reference antenna system adjustments - Glide path
- 6.1 Mechanical alignment of mast and antennas
- 6.2 Electrical measurements
- 6.3 CSB/SBO Phasing and sector width adjustment
- 6.4 Monitoring combining unit (MCU) adjustments
- 6.5 Location of near field antenna position
- 7 NM 3544 Sideband reference antenna system adjustment - Glide path
- 7.1 Mechanical alignment of mast and antennas
- 7.2 Initial electrical measurements
- 7.3 CSB/SBO Phasing
- 7.4 Sector width adjustment
- 7.5 Monitor combining unit (MCU) adjustments
- 7.6 Location of near field antenna position
- 7.7 Antenna distribution unit (ADU) phase and amplitude check
- 8 NM 3545 M-Array antenna system adjustments - Glide path
- 8.1 Mechanical alignment of mast and antennas
- 8.2 Initial electrical measurements
- 8.3 CSB/SBO Phasing
- 8.4 Sector width adjustment
- 8.5 Monitor combining unit (MCU) MOA 338D adjustments
- 8.6 Location of near field antenna position
- 8.7 Antenna distribution unit (ADU) DIA 346A phase and amplitude check
- 9 NM 3561 Single antenna system adjustments - MKR
- 10 NM 3562 Dual antenna system adjustments - MKR
- 1 NM 3522 6 elements antenna system adjustments - LLZ
- SECTION 4 TEST AND ADJUSTEMENTS
- 1 Tests and adjustments LLZ/GP
- 1.1 Configuration Settings
- 1.2 Transmitter Alignments and Calibration
- 1.3 Antenna System Adjustments
- 1.4 Monitor Alignment and Calibration.
- 1.5 Monitor Alarm Setting Procedure
- 1.6 Maintenance Limit Adjustments
- 1.7 Adjustment points
- 2 Tests and adjustments marker beacon
- 1 Tests and adjustments LLZ/GP
- SECTION 5 GROUND COMMISIONING REFERANCE DOCUMENTS
- SECTION 6 APPENDIX
- Diagram 1 Relative SBO vs CS Width, NM3522.
- Diagram 2 Relative SBO vs CS Width, NM3523B.
- Diagram 3 Relative SBO vs CS Width, NM3524.
- Diagram 4 Relative SBO vs CS Width, NM3525.
- Diagram 5 Relative SBO vs CS Width, GP antenna systems.
- Diagram 6 GP angle vs relative antenna height, NM3545.
- Diagram 7 GP angle vs relative antenna height, NM3544.
- Diagram 8 GP angle vs relative antenna height, NM3543.
- SECTION 1 ANTENNA INSTALLATION PROCEDURE
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Figure 1-4 Power balance SBO illustration.
Perfect power balance between the 90 Hz modulated carrier and the 150 Hz modulated car-
rier is indicated when the two largest sets of peak waveforms fall on lines paralell to the base-
line.
A more accurate way of observing a power balance error is to double the sweep rate in non-
trigger mode such that the second 60 Hz half of the cycle is folded back on the first half and
tracks the envelope waveform. (Kissing pattern method)
RF Power Balance can be adjusted by potentiometer RF-BAL on the back of the LPA/GPA
Adjust until both halvs fall on the same envelope waveform or the two largest sets of peak
waveforms fall on lines paralell to the baseline.
1.2.5 RF Phase at Combiner I/P
Connect the oscilloscope to the BNC test connector labelled SBO located on the transmitter
modules.
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Set the oscilloscope in normal trigger mode such that the waveform below can be observed
.
Figure 1-5 RF phase SBO illustration.
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