LLZ 421
Operation and Maintenance Alignment Procedure LLZ−2F (Dip./Refl.)
ILS 420
5−1Ed. 07.08
SOAC
CHAPTER 5
ALIGNMENT PROCEDURE LLZ−2F (13E, 21E)
MEDIUM− AND WIDE−APERTURE DIPOLE/REFLECTOR ANTENNA
The alignment procedure of a LLZ−2F using the dipole/reflector antenna system with 13 or 21 ele-
ments including prerequisites is described in a step by step manner starting with 5.1. The following
list is a summary and also a detailed table of contents. For LPD−antenna refer to Chapter 8.
5.1 GENERAL PREREQUISITES
5.1.1 Operation via Personal Computer
5.1.1.1 PC with MCS User Program
5.1.1.2 PC with ADRACS User Program
5.1.2 Recommended Measuring Equipment
5.1.3 Installation
5.2 FIRST SWITCHING ON
5.2.1 Status of the System
5.2.1.1 Special Jumper Settings before Start Up
5.2.2 Switching On
5.2.3 General Remarks to the PC User Program Handling
5.2.4 Preparing the Installation SITE with PC
5.2.4.1 Use of MCS
5.2.4.2 Use of ADRACS
5.2.5 Check and Enter Station Configuration Data
5.3 SETTING THE TRANSMITTER AND ANTENNA
5.3.1 Adjusting CRS CSB Signal
5.3.2 Adjusting CLR CSB Signal
5.3.3 Set CSB/SBO Phase (Course)
5.3.4 Set CSB/SBO Phase (Clearance)
5.3.5 Check SBO Null of Course Antenna
5.3.6 Set Course SBO Amplitude (Course Width)
5.3.7 Set Clearance SBO Amplitude
5.3.8 Set and Check Capture Ratio
5.3.9 Measure Course Position at Threshold
5.3.10 Performing Ground Check on Measurement Circle
5.4 SETTING THE MONITORS
5.4.1 Adjustment Procedure of Aerial Channels
5.4.1.1 CRS Posn. Channel
5.4.1.2 CRS Width Channel
5.4.1.3 CLR Width (1) Channel
5.4.1.4 NFM Channel
5.4.2 Adjustment Procedure of Standby Channels
5.4.2.1 StbyCRS Posn. Channel
5.4.2.2 Stby CRS Width Channel
5.4.2.3 Stby CLR Width Channel
5.4.3 Calibration and Normalization of Integral Monitors
5.4.3.1 Integral Monitoring Posn. (DDM 0 %)
5.4.3.2 Integral Monitoring Width (DDM 15.5 %), optional
5.4.3.3 Clearance Width Monitor
5.4.3.4 Position Nearfield Monitor
5.4.4 Calibration and Normalization of Standby Monitors
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