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
8.5.1 Adjustments procedure
The Clearance transmitter shall be switched off during steps a) through e) below.
1. Connect the Field Test Set to the CL output of the MCU. Insert the 90° stub in the SBO out-
put of the Transmitter Cabinet. In the Antenna Distribution Unit (ADU), disconnect SBO to
Lower antenna by using the SBO-L link. Terminate open ends. Adjust Upper antenna
phaser PH1 in MCU to give 0% DDM.
2. Reconnect SBO to Lower antenna. Remove the 90° stub. Adjust CL attenuator AT1 in
MCU to give 0 % DDM.
3. Connect the Field Test Set to the DS output of the MCU. Insert the 90° stub in the SBO out-
put of the Transmitter Cabinet. Adjust Middle antenna phaser PH2 in MCU to give 0%
DDM.
4. Remove the 90° stub. Adjust DS attenuator AT2 in MCU to give 8.75% DDM (75
µ
A), 150
Hz dominance.
5. Connect the Field Test Set to the CLR output of the MCU. Adjust phaser PH3 in MCU to
maximum DDM (150 Hz dominance).
6. Turn on CLR transmitter. Check that sufficient 150Hz dominance remains.
8.6 Location of near field antenna position
According to site data (slope, etc.,) the theoretical position of the NF antenna should be calcu-
lated.
Install the NF antenna at the position according to calculations (distance and height). Adjust
the height to 0 DDM reading on the Field Test Set connected to the NF monitor cable. (Ladder
and personnel must be removed from the NF area.)
8.6.1 Near Field Monitor Position Search
A de-phasing test procedure of upper antenna (A3) can be carried out in order to search for
the optimum monitor position.
A N-type adapter (-27°) (made from a male-male and female-female adapter put together) is
inserted in the lower antenna feed (A1) and middle antenna feed (A2). This is equivalent to
advance (+) phase of the upper antenna.
Retard (-) phase is introduced by inserting the adapter in upper antenna feed A3 only.
The DDM readings and correlation of the monitor antenna signal to the CL integral from MCU
(far field) should theoretically be:
Dephasing Near Field (NF) Far field (CL)
27° retard -12µA/-1.4% DDM -11µA/-1.3% DDM
27° advance -9µA/-1.1% DDM -11µA/-1.3% DDM