User's Manual

FIPLEX • Electromagnetic Devices for Radiocommunication Systems
FIPLEX BIDIRECTIONAL AMPLIFIER - USER MANUAL
DOWNLINK GAIN SETUP
Manual Gain Setup
Downlink gain control is achieved setting up the desired attenuation value by
means of tact switches, value of attenuation is displayed in two seven segments displays
located at the right of the attenuation controls (please see figure below).
Attenuation values runs from 0dB (nominal gain condition), up to 25dB (maximum
attenuation or minimum gain), in steps of 1dB. If isolation level between antennas is not
enough, repeater automatically sets the maximum gain value allowed in order to prevent
unwanted oscillations. Under this circumstances user will not be able to set attenuation
values that may take the repeater to a non secure operating condition (usually nominal
gain is never achieved).
Downlink gain manual control
12 Document FIP-BDAM-07-EN