LLZ 421
Alignment Procedure LLZ−1F (LPD) Operation and Maintenance
ILS 420
7−4 Ed. 07.08SOAC
7.1.1.2 PC with ADRACS User Program
The PC with the ADRACS user program should meet the following requirements:
− Processor; clock min. Pentium I, 90 MHz or better (IBM PC/AT compatible)
− Main memory min. 32 MB RAM
− Graphics and memory VGA, min. 2 MB; color monitor, resolution min. 800x600
− Hard disk min. 1 GB HDD
− CDROM available, min. speed 4x
− Floppy drive 3.5" FDD (1.44 MB), recommended
− Control input via mouse or comparable pointing device
− Serial interface two serial interface connectors available
− Network adapter −
− USB interface recommended, useful for memory sticks
− Operating system any 32 bit version of Microsoft WINDOWS operating system
− Free disk space min. 10 MB on HDD
The ADRACS software should be installed on the available PC. For installation procedure refer the
Technical Manual ADRACS (Ref. No. 83140 55324).
7.1.2 Recommended Measuring Equipment
− Field strength meter (for capture ratio)
− Thruline wattmeter,
− Oscilloscope (dual trace, trigger delay facility)
− 50 W measuring element (110 MHz)
1 W measuring element (110 MHz)
− DDM instrument (portable)
− Reducers and phase adapters
− 1 pair of radiotelephones
− Attenuators for the monitor inputs (e.g. for nearfield 3, 6, 10 dB)
− Attenuator 20 dB (TNC) for ILS field receiver (PIR 7010)
7.1.3 Installation
Before operation, the system must complete as follows:
− Transmitter cabinet, installed,
− Power supply, installed,
− Batteries, installed,
− Antenna system and
− Nearfield monitor dipole (option), installed and cabling complete.
− Mains voltage must be in accordance with assigned input voltage range of BCPS
(nominal 115 to 230 VAC).
− Cabinet has to be fully equipped with all plug−in units.
− Jumpers and DIP−FIX switches of the pertinent printed circuit boards (refer also to 6.6.5) have to
be in accordance with the system version. To enable battery backup on specific printed circuit
boards and for initial settings on site refer to 7.2.1.1.
− The MCS resp. ADRACS software has been loaded to PC (refer to 7.1.1 ).
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