User's Manual

MCW-D 50 – Trouble Shooting
49
english
Problem
Loudspeaker of the microphone unit does
not work
Microphone unit cannot be switched off
Documentation output does not work
Feedback
Interferences; noise
Short drop-outs
Possible Cause
• Check the volume adjustment with the
MCW-D 50 Conference Software
• “Disable Manual Power Off”
function is activated
• Operating mode Push-To-Talk or Voice
activated is active
• Crash of the microcontroller inside the
microphone unit
• Microphone unit is not switched on
• Headphone is not connected
properly
• Check the volume adjustment with the
MCW-D 50 Conference Software
• Check the external loudspeakers
• Check the audio level
• Microphone unit is not within the range
of the control unit
• Check the antenna positioning and the
antenna cable
• Check the line of sight between micro-
phone unit and antenna
• Interferences caused by devices such as
Wireless LAN
Solution
• Increase the volume with the
MCW-D 50 Conference Software or the
Volume control of the MCW-D 50
control unit
• Deactivate “Disable Manual Power Off”
function with the MCW-D 50
Conference Software
• Deactivate the operating mode
Push-To-Talk or Voice activated with the
MCW-D 50 Conference Software
• Switch off the microphone units via the
control unit by pressing the
Clear/Standby button more than
3 seconds.
• Switch off the control unit. The micro-
phone units will go off after approx.
3 minutes.
• Press the counter-sunk Reset button on
the bottom of the microphone unit.
• Switch on the microphone unit
• Connect the headphone properly
• Increase the volume with the
MCW-D 50 Conference Software or
with the volume control of the
MCW-D 50 control unit
• Correct the volume and position of the
loudspeaker
• Reduce the input level of the
control unit
• Reduce the distance between
control unit and microphone units
• If necessary use an antenna amplifier
• Remove obstacles between microphone
units and antennae; do not place any
objects in front of the antennae of the
control unit
• Select another frequency band for the
RF module(s) with the MCW-D 50
Conference Software. Refer also to
chapter 9.1.
9.1 Simultaneous Operation of the MCW-D Discussion System and other 2.4 GHz Devices
(e.g. WLAN, Bluetooth)
9.1.1 Physical Laws
Due to many physical laws it is not possible to guarantee a simultaneous interference-free operation of different devices using the same
frequency band. Radio devices operating in the same frequency band will always disturb each other (the function can be disturbed as well).
For the use of UHF wireless microphones it is known that 2 devices can never be operated on the same frequency. It is only possible to
operate a certain number of compatible radio devices within a defined frequency band.
This applies also to the 2.4 GHz-ISM band (2400 MHz - 2484 MHz). Due to digital transmission techniques and various transmission
standards it is possible, but not recommended, to operate certain devices simultaneously within the same frequency band.