LLZ 421
Operation and Maintenance Alignment Procedure LLZ−1F (LPD)
ILS 420
7−1Ed. 07.08
SOAC
CHAPTER 7
ALIGNMENT PROCEDURE LLZ−1F,
8 AND 14 ELEMENT LPD−ANTENNA
The alignment procedure of a LLZ−1F using the LPD antenna system including prerequisites is de-
scribed in a step by step manner starting with 7.1. The following list is a summary and also a detailed
table of contents.
7.1 GENERAL PREREQUISITES
7.1.1 Operation via Personal Computer
7.1.1.1 PC with MCS User Program
7.1.1.2 PC with ADRACS User Program
7.1.2 Recommended Measuring Equipment
7.1.3 Installation
7.2 FIRST SWITCHING ON
7.2.1 Status of the System
7.2.1.1 Special Jumper Settings before Start Up
7.2.2 Switching On
7.2.3 General Remarks to the PC User Program Handling
7.2.4 Preparing the Installation with PC
7.2.4.1 Use of MCS
7.2.4.2 Use of ADRACS
7.2.5 Check and Enter Station Configuration Data
7.3 SETTING THE TRANSMITTER AND ANTENNA
7.3.1 Adjusting CRS CSB Signal
7.3.2 Set CSB/SBO Phase (Course)
7.3.3 Check SBO Null of Course Antenna
7.3.4 Set Course SBO Amplitude (Course Width)
7.3.5 Measure Course Position at Threshold
7.3.6 Performing Ground Check on Measurement Circle
7.4 SETTING THE MONITORS
7.4.1 Adjustment Procedure of Aerial Channels
7.4.1.1 CRS Posn. Channel
7.4.1.2 CRS Width Channel
7.4.1.3 NFM Channel
7.4.2 Adjustment Procedure of Standby Channels
7.4.2.1 StbyCRS Posn. Channel
7.4.2.2 Stby CRS Width Channel
7.4.3 Calibration and Normalization of Integral Monitors
7.4.3.1 Integral Monitoring POS (DDM 0 %)
7.4.3.2 Integral Monitoring WIDTH (DDM 15.5 %)
7.4.3.3 Position Nearfield Monitor
7.4.4 Calibration and Normalization of Standby Monitors
7.4.4.1 COURSE POSITION STANDBY Monitor
7.4.4.2 COURSE WIDTH STANDBY Monitor
7.4.5 Check Alarm Limits and Alarm Delays
7.4.5.1 Executive Alarm Limits
7.4.5.2 Far Field Alarm Limits
7.4.5.3 Standby Alarm Limits
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