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ClearOne WS800 Application Manual
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ClearOne WS800 Application Manual

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Application Guide
WS800 Wireless Microphone System
Antenna Application Guide

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Summary of Contents for ClearOne WS800

  • Page 1 Application Guide WS800 Wireless Microphone System Antenna Application Guide...
  • Page 2 (inverse square law). Keep the antennas as close to the area where the transmitters will be used as practical without violating Rule 1. Rule 6: Transmitter Power Adjust the transmitter power to meet the -40 to -60 dBm reading as seen in the ClearOne Wireless Graphic User Interface scan function.
  • Page 3 The following case studies show how these rules may be applied in several common configurations: Case I: Flexible Configurations Conference Room 1st Choice Factor Antennas on Ceiling Equal All of the transmitters are about the same distance to the closest antenna. If there is IMD interference it will be small com- Distance pared to the transmitter signal.
  • Page 4 Case II: Split Flexible Configurations Conference Room 1st Choice Factor 4 Antennas on Ceiling The RF Signal of transmitters close to the receiver antennas can lower the sensitivity of the receiver so that transmitters that are farther away do not have an adequate signal level at the receiver. Also using transmitters too close to the Equal receiver antennas or at too high of transmit power can cause Intermodulation Distortion which can either shadow desired Distance...
  • Page 5 Case III: Small Auditorium or Church 1st Choice Factor 2 Antennas on Ceiling Equal All of the transmitters are about the same distance to the closest antenna. If there is IMD interference it will be small Distance compared to the transmitter signal. This meets the design rule. The antennas are separated so at least one antenna is always out of the transmitter antenna’s null.
  • Page 6 Case III: (continued) Small Auditorium or Church 3rd Choice Factor 2 Antennas On Back Wall Equal All of the transmitters are about the same distance to the closest antenna. If there is IMD interference it will be small Distance compared to the transmitter’s signal. This meets the design rule. The antennas are separated so at least one antenna is always out of the transmitter antenna’s null.

  • Page 7: Dipole Antennas

    In addition, ClearOne’s digital wireless transmission method uses numerical techniques that make them far less prone to IMD interference than is possible with analog systems. That is one reason ClearOne’s systems can be much larger than is possible with analog systems.
  • Page 8 (6) Built-in antenna distribution WS800 receivers allow the antenna inputs and outputs to be linked together on multiple units to create up to a 32 channel system. Then the top receiver can be connected to a pair of extension antennas to cover a single area.
  • Page 9 Do not daisy-chain extension antennas together in series. NOTES: Plenum Areas: Plenum-rated cables must be used in plenum areas above the drop ceiling. ClearOne antenna kits state whether they include plenum or non-plenum rated cables. Extension antenna units are not plenum rated and should never be placed in plenum areas.
  • Page 10 Extension Antenna Combiner / Divider ClearOne WS800 Wireless Microphone Systems can service up to (6) rooms per system by using a combined / divided extension antenna distribution. ClearOne WS800 technology creates a flexible wireless solution for rooms with partitioned walls or multiple room configurations allowing the microphones to be used in any combination within any of the rooms.
  • Page 11 Plenum Rated Cables have a special coating (usually Teflon) that does not give off toxic gasses and smoke when it burns. Always use plenum rated cables when required by the codes for the project site. ClearOne systems require 50 Ohm Coax Cable with a total line loss less than 15 dB at 900 MHz. Part Number...
  • Page 12 Sales: 800-707-6994 Other product names may be registered trademarks of their respective owners who do not necessarily endorse ClearOne or ClearOne’s products. All rights reserved. Fax: 801-977-0087 Information in this document subject to change without notice. © 2017 ClearOne. DOC-0082-001 Revision 3.0 Jan.12 2017.