Comprod Communications BDA-380512, Техническое руководство

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U H F B I D I R E C T I O N A L A M P L I F I E R T E C H N I C A L M A N U A L
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Definition of Terms:
AGC – Automatic Gain Control
ASD
– Automatic Shut Down
Attenuate – Reduce sensitivity or gain
BDA – Bi-Directional Amplifier
BPF – Bandpass Filter
BTS – Base Transceiver Station
DAS – Distributed Antenna System
DL – Downlink – The signal coming down into a building from a remote tower via a “Donor” antenna.
HPA (or PA) – High Power Amplifier
LNA – Low Noise Amplifier
MCU – Master Control Unit
MGC – Manual Gain Control
OSC – Oscillate – When the donor antenna signal gets back into the DAS, oscillation will occur. Hence there
must be isolation between the donor antenna and the DAS system. A directional donor antenna is important in
preventing oscillation.
Over temp – When the internal temperature reaches a pre-set limit.
RFM – Radio Frequency Module
S/D – Shut down
SMA – Sub Miniature [Coaxial Connector] version A
PSU – Power Supply Unit
UL – Uplink – The signal being sent up to a remote tower from a DAS
V.S.W.R. - Voltage Standing Wave Ratio – Measurement of the efficiency of an RF system.
End of Document