LLZ 421
Operation and Maintenance Alignment Procedure LLZ−1F (Dip./Refl.)
ILS 420
4−1Ed. 01.10
SOAC
CHAPTER 4
ALIGNMENT PROCEDURE LLZ−1F (14E)
MEDIUM APERTURE ANTENNA
The alignment procedure of a LLZ−1F using the Dipole/Reflector antenna system with 14 elements
including prerequisites is described in a step by step way starting with 4.1. For the previously used
12 elements system, an individual Product Info is available. The following list is a summary and also
a detailed table of contents. For LPD−antenna refer to Chapter 7.
4.1 GENERAL PREREQUISITES
4.1.1 Operation via Personal Computer
4.1.1.1 PC with MCS User Program
4.1.1.2 PC with ADRACS User Program
4.1.2 Recommended Measuring Equipment
4.1.3 Installation
4.2 FIRST SWITCHING ON
4.2.1 Status of the System
4.2.1.1 Special Jumper Settings before Start Up
4.2.2 Switch On
4.2.3 General Remarks to the PC User Program Handling
4.2.4 Preparing the Installation SITE with PC
4.2.4.1 Use of MCS
4.2.4.2 Use of ADRACS
4.2.5 Check and Enter Station Configuration Data
4.3 SETTING OF TRANSMITTER AND ANTENNA
4.3.1 Adjusting CRS CSB Signal
4.3.2 Set CSB/SBO Phase
4.3.3 Check SBO null of Course Antenna
4.3.4 Course Width
4.3.5 Measure Course Position at the Threshold
4.3.6 Performing Ground Check on Measurement Circle
4.4 SETTING THE MONITORS
4.4.1 Adjustment Procedure of Aerial Channels
4.4.1.1 CRS Posn. Channel
4.4.1.2 CRS Width Channel
4.4.1.3 NFM Channel
4.4.2 Adjustment Procedure of Standby Channels
4.4.2.1 Standby CRS Posn. Channel
4.4.2.2 Standby CRS Width Channel
4.4.3 Calibration and Normalization of Integral Monitors
4.4.3.1 Integral Monitoring Posn. (DDM 0 %)
4.4.3.2 Integral Monitoring Width (DDM 15.5 %)
4.4.3.3 Adjustment of Position Nearfield Monitor, optional
4.4.4 Calibration and Normalization of Standby Monitors
4.4.4.1 Course Position Standby Monitor
4.4.4.2 Course Width Standby Monitor
4.4.5 Set Alarm Limits and Alarm Delays
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