INSTRUCTION MANUAL UMCWB and UMCWBL Wideband UHF Diversity Antenna Multicouplers • Assembly and Installation • Antenna Types Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.
UMCWB 2 LECTROSONICS, INC.
UHF Diversity Multicoupler Table of Contents General Technical Description...............................................................................................................................................................4 RF/Power Distribution Module Block Diagram.......................................................................................................................................4 Antenna Input ...................................................................................
UMCWB General Technical Description The purpose of wideband architecture is to provide the flexibility needed to deal with a changing RF environment, and for mobile productions that cover broad geographic areas. The UMCWB provides a mechanical rack mount with power and RF signal distribution for four diversity compact receivers in a single rack space. The standard version covers frequency blocks from 21 through 29. The wideband low version covers frequency blocks from 470 through 26.
UHF Diversity Multicoupler Antenna Input Standard 50 ohm BNC connectors are used for the antenna inputs and signal distribution. The RF signals are fed to the receivers via coaxial cables that loop through the front panel to the receiver inputs. The leads are labeled as “A” and “B” and routed so that each receiver has one of each connected for diversity reception.
UMCWB Assembly and Installation Assembly of the unit consists of installing the receivers in the frame and connecting the antenna leads and power cables to each receiver. “B” Antenna Leads “A” Antenna Leads Power Supply Leads 3. Route the antenna leads through the slots on the front of the frame before mounting the receivers. Start with the shortest “A” lead and the shortest “B” lead for the receiver closest to the power supply, then the next shortest A and B leads for the next receiver, and so forth.
UHF Diversity Multicoupler 6. The power cables can be routed outside of the Uchannel cover, or routed under the U-channel cover alongside the antenna leads. A: B: Note: If you opt to run the power cords outside of the U-channel along the back of the receivers, they might be unplugged accidentally. C: Installing the Wire Cover Installing the U-channel wire cover can be difficult if the power cables are routed with the antenna leads under the U-channel wire cover.
UMCWB Antenna Types and Bandwidth While the wide bandwidth of the multi-coupler is very convenient, it also requires that the antennas used with it also have a bandwidth wide enough to cover the range of the receivers that are installed. If the entire bandwidth from block 21 through block 29 is to be used, the best antenna would be one of the ALP Series log periodic models.
UHF Diversity Multicoupler Antenna Use and Placement Try to position the antennas so that they are not within 3 or 4 feet of large metal surfaces. It is also good to maintain a direct “line of sight” between the transmitter and the receiver antennas. In situations where the operating range is less than about 50 feet, the antenna positioning is much less critical. Diversity receiver designs include a method of selecting or combining two antennas to reduce or eliminate drop-outs.
UMCWB Accessories ARG2 RF coaxial cable assembly, 2ft length, BNC male connectors ARG15 RF coaxial cable assembly, 15 ft. length, BNC male connectors ARG25 RF coaxial cable assembly, 25 ft. length, BNC male connectors ARG50 RF coaxial cable assembly, 50 ft. length, BNC male connectors ARG100 RF coaxial cable assembly, 100 ft.
UHF Diversity Multicoupler Service and Repair If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnecting cables and then go through the Troubleshooting section in this manual.
LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor.
