User's Manual

FIPLEX • Electromagnetic Devices for Radiocommunication Systems
FIPLEX BIDIRECTIONAL AMPLIFIER - USER MANUAL
UPLINK GAIN SETUP
Manual Gain Setup
Uplink 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).
Uplink gain manual control
14 Document FIP-BDAM-07-EN