Sony DWT-B30 Digital Wireless Bodypack Transmitter (UC7: 470 to 616 MHz) - Manual (Page 20)

20
Important Notes on
Operation
The life expectancy of the electrolytic capacitor is about 5
years under normal operating temperatures and normal
usage (8 hours per day; 25 days per month).
If usage exceeds the above normal usage frequency, the
life expectancy may be reduced correspondingly.
The battery terminal of this unit (the connector for battery
packs and AC adaptors) is a consumable part.
Power may not be supplied to the unit properly if the pins
of the battery terminal are bent or deformed by shock or
vibrations, or if they become corroded due to prolonged
outdoor use.
Periodic inspections are recommended to keep the unit
working properly and to prolong its usable lifetime.
Contact a Sony service or sales representative for more
information about inspections.
Operation and Storage
• The unit must be used within a temperature range of 0 °C
to 50 °C (32 °F to 122 °F).
• Using the unit near electrical equipment (motors,
transformers, or dimmers) may cause it to be affected by
electromagnetic induction. Keep the unit as far from
such equipment as possible.
• The presence of the lighting equipment, including
decorative lights, may produce electrical interference
over the entire frequency range. The interference will
vary depending on the positions of the receiving antenna
and wireless microphone, so position equipment so that
interference is minimized.
• When using the unit in locations with excessive noise or
vibration, the vibration may transfer directly to the unit,
resulting in the generation of electrical noise
(microphonics) and degradation of the signal-to-noise
ratio. To prevent such occurrences, avoid using the unit
in the following locations.
– Near motors, transformers, etc.
– Locations subject to noise and air flow from air
conditioning equipment
– Near PA (public address) system speakers
– Locations subject to knocks or contact from adjacent
equipment
In addition to keeping the unit as far from such
equipment as possible, use buffering materials or take
other preventative measures.
Cleaning
• After using the unit in excessively humid or dusty
locations or in the presence of active gases, clean the
surface of the unit and its connectors as soon as possible.
Extended use in such locations or failure to clean may
shorten the life cycle of the unit.
• Wipe the surface of the unit and its connectors using a
soft, dry cloth. Never use chemicals, such as thinner,
benzene, or alcohol, as they may damage the finish.
Notes on Simultaneous Multi-
Channel Operation
• Keep transmitters at least 30 cm (11 7/8 in.) away from
each other.
If distances closer than the above between transmitters
cannot be avoided, use a grouping system for multi-
channel systems that includes both analog wireless and
digital wireless devices.
For details, refer to “Sony Digital Wireless Microphone
System Frequency Lists” on the supplied CD-ROM.
• Refer to the following when determining the distances
between the transmitters and the antennas of receivers.
When using only digital wireless devices:
• At least 4 m (13 ft.) (for up to 10 channels)
• At least 6 m (20 ft.) (for 11 or more channels)
When using a mixture of digital and analog
wireless devices:
At least 6 m (20 ft.)
• This system should be kept at least 100 m (328 ft.) away
from any analog wireless systems using the same
frequency when both are being used in a wide area with
no walls or obstructions.
• If noise occurs, increase the distance between the
transmitter and receiver or decrease the transmission
power on the transmitter.
Notes on Use with Microphones
We recommend using the ECM-77LM lavelier
microphone with the unit. The unit’s transmission signal
may cause noise on other microphones. If noise occurs,
you may be able to reduce it by changing the position of
the microphone cable, moving the microphone connection
away from the antenna, or decreasing the transmission
power.
CROSS REMOTE Compatibility
As the unit supports a wider band than previous
transmitters, establishing wireless remote communication
via CROSS REMOTE between the unit and DWX-series
devices requires firmware update for the receiver and
RMU-01 unit.
For details on updating the firmware on the DWX-series
receiver or RMU-01 unit, contact your Sony
representative.
To prevent electromagnetic interference from portable
communication devices
The use of portable telephones and other communication
devices near the unit may result in malfunction and
interference with audio signals. It is recommended that
portable communication devices near the unit be turned off.