Operating Instructions

Important Notes on Use
22
Important Notes on Use
The 2.4 GHz band used by the units is also used by other
devices, such as microwave ovens, wireless LAN
devices, and mobile terminals.
Interference from such wireless devices using the
2.4 GHz band may reduce the operating range of the units
and cause noise to occur.
• Use the Best Channel Selection or Clear Channel Scan
function to select channels with the least interference.
• If the reception status is poor, move the microwave
oven, wireless LAN device, mobile terminal, or other
devices using the 2.4 GHz band at least 10 m away from
the units, or change the RF mode of the units.
• If this does not resolve the problem, stop operation of
the other wireless devices using the 2.4 GHz band (i.e.,
stop their radio signals).
• The frequencies assigned to each channel of a 2.4 GHz
band wireless microphone system other than the Sony
DWZ series may differ and may not be compatible.
Therefore, simultaneous use with such systems may not
be possible.
Precautions for installation
• To prevent audio noise caused by interference from
other transmitters or by excessive RF inputs, maintain a
distance of at least 30 cm between the transmitter and
the receiver.
• Install the antenna of the receiver as far away from
metallic objects as possible.
• When using the units with a guitar, noise may occur
depending on the type of pickup used. If noise occurs,
place the transmitter at least 30 cm away from the
pickup portion of the guitar. Changing the cable paths
may also reduce the noise levels.
Precautions for use with microphones
• If microphones other than the ECM-GZ1UBMP
(supplied with the DWZ-B50I) or other than the
ECM-HZ1UBMP/LZ1UBMP (supplied with the
DWZ-M70HL) are connected, problems such as lack of
sound and phase inversion may occur.
• Attaching a microphone unit from another
manufacturer onto the ZTX-M02RC handheld
microphone may result in RFI or EMF noise.
Usage and Storage
• Operating the DWZ series components near electrical
equipment (motors, transformers, or dimmers) may
cause it to be affected by electromagnetic induction.
Keep the DWZ series components as far from such
equipment as possible.
• The presence of the lighting equipment may produce
electrical interference over the entire frequency range.
Position the DWZ series components so that
interference is minimized.
Cleaning
Clean the surface and the connectors of the DWZ series
components with a dry, soft cloth. Never use thinner,
benzene, alcohol or any other chemicals, since these may
mar the finish.
To prevent electromagnetic interference from portable
communication devices
The use of portable telephones and other communication
devices near the DWZ series components may result in
malfunction and interference with audio signals. It is
recommended that portable communication devices near
the DWZ series components be turned off.