GE MDS Master Station - Page 8

4 MDS™ Master Station MDS 05-6399A01, Rev. E
7.1 Interpreting Module LEDs ...................................................................................... 91
Normal Operation ............................................................................................... 91
Exception and Alarm States ............................................................................... 92
7.2 Redundant Units .................................................................................................... 93
7.3 Technical Assistance ............................................................................................. 93
7.4 Replacing Modules ................................................................................................ 93
Power Supply Modules ....................................................................................... 93
Peripheral Modules – including Platform Manager, Radio, Alarm, and Alarm Relay
Modules. ............................................................................................................. 94
Hot Swap Redundant Modules ........................................................................... 94
Internal Duplexer Tray ........................................................................................ 95
MDS SDM4—400 MHz Notch-Type Duplexers .................................................. 95
MDS SDM9—Bandpass-Type Duplexers ........................................................... 96
7.5 Testing and Removing an Internal Duplexer .......................................................... 96
Testing ................................................................................................................ 96
Removing the Internal Duplexer ......................................................................... 97
8.0 TECHNICAL REFERENCE DATA ................................................................... 100
8.1 RF Propagation Planning ..................................................................................... 100
Fresnel Zone Clearance ................................................................................... 100
Formulas for System Planning.......................................................................... 101
8.2 dBm-Volts-Watts Conversion Chart ..................................................................... 103
9.0 GLOSSARY OF TERMS & ABBREVIATIONS ................................................ 104