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2.1.2.4 Rack Configuration.........................................................................13
2.1.2.5 LLWAS Software.............................................................................15
2.1.2.6 Master Station LLWAS Displays .......................................................16
2.1.3 Remote Station (RS) ............................................................................18
2.1.3.1 System Description .........................................................................19
2.1.3.2 Wind Sensor Simulator ...................................................................20
2.1.3.3 Reliability Issues ..............................................................................21
2.1.3.4 Remote Station Electrical Power Requirements ...............................21
2.1.3.5 Environmental Conditions...............................................................21
2.1.3.6 Remote Station Obstruction Lights..................................................22
2.1.4 LLWAS Wind Sensors ..........................................................................22
2.1.5 Wind Masts………………………………………………………...……..23
2.1.6 RF and Land Line Data Links................................................................23
2.1.6.1 Detailed Communication Specification............................................23
2.1.7 Display Equipment ..............................................................................24
2.1.7.1 Overview ........................................................................................24
2.1.7.2 Alphanumeric Alarm Display (AAD).................................................25
TELVENT Low Level Windshear Alert System
Almos
2
LLWAS
Low Level Windshear Alert System
2.1.7.3 Graphical Alarm Display Screens (GAD)...........................................31
2.1.8 Interfaces...........................................................................................33
2.1.8.1 External Data Interface....................................................................33
2.1.9 Algorithm Implementation ..................................................................33
2.1.9.1 LLWAS Algorithm Functions............................................................35
2.1.10 Archiving/Playback..........................................................................36
2.1.11 Maintenance………...…………………………………………………38
2.1.11.1 Master Station Maintenance Screens ..............................................39
2.1.11.2 Built–In Test Equipment - BITE ........................................................42
2.1.11.3 Site Performance Evaluation System (SPES) .....................................44
2.1.11.4 Installation and Maintenance Tools.................................................49
2.1.12 System Modes (States) .......................................................................50
2.1.12.1 Real Time Normal ...........................................................................50
2.1.12.2 Real Time Degraded........................................................................50
2.1.12.3 System Support...............................................................................50
2.1.12.4 Initialization ....................................................................................51
2.1.12.5 Off..................................................................................................51
2.2 Configuration File ........................................................................................51
2.2.1 ACF……………………………………………………………………......53
2.2.2 DCF…………………………………………………………………...…...53
2.2.3 MCF, SCF……………………………………………………………….....53
3. Realibility, Maintability, Availability (RMA), and Supportability.............53
3.1 RMA Characteristics .....................................................................................53
3.1.1 Mean Time Between Failure (MTBF) / Mean Time Between Critical
Failures (MTBCF) .................................................................................53
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