User's Manual
mBSC DAS System
Installation Manual Issue 3
©2009‐2011,BTIPage8
protection against atmospheric discharge is highly suggested, even though the Remote Unit is
internally protected against over-voltage.
15.Class 1 – Laser Radiation warning: Do not look into the beam, view it directly, or
indirectly with or without optical instruments.
1.2 GLOSSARY AND ACRONYMS
The acronyms and abbreviations used in this manual are detailed in the following list.
Abbreviation Description
AISG Antenna Interface Standard Group
BIU Base station Interface Unit
BTS Base Station
CFR Crest Factor Reduction
CL-OS Closed-Loop Operating System
DAS Distributed Antenna System
EDGE Enhanced Data for GSM Evolution
FIU Fiber Interface Unit
FIU-S Fiber Interface Unit - Simulcast
FIU-NS Fiber Interface Unit - Non-Simulcast
HPA High Power Amplifier
HU Host Unit
LMU Location Measurement Unit
LNA Low Noise Amplifier
mBSC Multi-Band Multi-System Multi-Carriers
MIMO Multi-input multi-output MTBF
Mean Time Between Failure
NMS Network Management System
PA Power Amplifier
PCU Power Controller Unit
PWM Pulse Width Modulation
RCU Remote Control Unit
RF Radio Frequency
RU Remote Unit
RX Receive Signal
TDTD Time delay TX diversity
TMA Tower Mounted Amplifier
TX Transmit Signal
UMTS Universal Mobile Telecom System
VSWR Vertical Standing Wave Radio