Lectrosonics UMC195d - Manual (Page 3)

Rack Mount Multi-Channel Systems
GENERAL TECHNICAL DESCRIPTION
The Multi-Channel Wireless Systems consist of two sub-systems; the frame which contains the receivers and the
receiver mounting hardware, and the RF/power distribution module.
The RF/power distribution module is the heart of the Multi-Channel Wireless System. Selective filtering in the front
end of the RF section attenuates out-of-band RF signals preventing intermodulation and front end overload. Follow­
ing the filters is a low noise, low gain RF amplifier designed to evenly compensate for splitter losses in the stage that
follows. A precision splitter/isolator divides the RF signal into four isolated signals preventing spurious RF coupling
between receivers. The splitter/isolator is termination independent which prevents mismatched or disconnected RF
outputs from affecting the other receivers.
Power is supplied to the RF/power distribution module from an external DC power supply module. This keeps AC
hum problems to a minimum. All power circuits are protected by internal auto-reset fuses in the RF/power distribu­
tion module. Should the power to one receiver fail, the others will continue to operate.
RF FILTERING & DISTRIBUTION
POWER SUPPLY & DISTRIBUTION
POLYFUSES
REGULATOR
FRONT END
FILTERS
RF
AMP
SPLITTER
&
ISOLATOR
SPLITTER
&
ISOLATOR
RF to
Receivers
12V DC
Power to
Receivers
RF
AMP
Diversity RF/Power Distribution Module
POWER
SUPPLY
A
ANTENNA
B
ANTENNA
Rio Rancho, NM – USA 3