Lectrosonics UMC16a User Manual
UMC 16A
RF DISTRIBUTION SYSTEM
OPERATING INSTRUCTIONS
and trouble-shooting guide
Rio Rancho, NM, USA
www.lectrosonics.com
INTRODUCTION
The UMC16 multi-coupler combines ceramic filtering with low noise, high intercept
point RF distribution to provide outstanding performance and flexibility. Up to
eight diversity receivers or up to 16 non-diversity receivers can be utilized in up to
a 50MHz passband.
The UMC16 can be powered by 110V AC for stage, studio or installed system
applications, or from DC power for field operation.
Table of Contents
INTRODUCTION..................................................................................... 2
GENERAL TECHNICAL DESCRIPTION .............................................. 3
FRONT PANEL DESCRIPTION ............................................................. 3
REAR PANEL DESCRIPTION ............................................................... 4
PHANTOM POWER JUMPERS ............................................................. 4
ANTENNA USE AND PLACEMENT ..................................................... 5
SPECIFICATIONS .................................................................................. 6
SERVICE AND REPAIR ......................................................................... 7
RETURNING UNITS FOR REPAIR ....................................................... 7
WARRANTY ........................................................................... Back cover
2
GENERAL TECHNICAL DESCRIPTION
A universal power supply provides operation world-wide. An LED on the front panel verifies the presence of power
to the internal circuit board.
Selective filtering ahead of the low noise, high intercept RF amplifiers reduces intermodulation problems caused by
overload in the RF amplifiers. The filters provide a factory settable bandwidth of 16 to 50MHz.
Note: The frequency range and bandwidth is set at the factory and can be found by the serial number on the rear
of the unit.
Each antenna input feeds a ceramic filter assembly. The antenna outputs are coupled to the filter assemblies via
“strip lines” (1/4 wave transmission lines) built onto the circuit board, which function as RF power dividers.
Each ceramic filter module feeds eight outputs on the rear panel.
Strip Line
RF Power
Divider
Low Noise
Amp
A
IN IN
Ceramic Resonator
Filter
A OUT
Strip Line
RF Power
Divider
Low Noise
Amp
Ceramic Resonator
B OUT
Filter
B
Figure 1 - UMC16a Block Diagram
FRONT PANEL DESCRIPTION
LECTROSONICS
Rio Rancho, New Mexico – U.S.A.
Figure 2 - UMC16a Front Panel
POWER
Main power switch for the UMC16 with indicator LED.
16 Channel UHF Multi-Coupler
POWER
3
Loading...