Toa WM-422, Operating Instructions Manual

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2. GENERAL DESCRIPTION
The TOA’s WS-422/432/402 series W i r e l e s s M i c r o p h o n e s y s t e m is designed for use on the
UHF f r e q u e n c y band, and suitable for vocal or speech reinforcement applications. It features a
compander circuit which minimizes the influence of ambient noise.
Up to 16 User selectable channels that can be operated simultaneously. (depending on region)
Wireless handheld Microphone is a vocal microphone, employing a fine, powerful dynamic microphone unit.
Wireless belt-pack transmitter can use the supplied lavalier microphone and YP-MS4 series lavalier
microphones and headset microphones.
Dual channel wireless receivers are the rack-mountable diversity receivers to minimize drop-outs.
Dual channel wireless receiver employs the audio mixing output.
3. FEATURES
• An optimized PLL-synthesizer minimizes the oscillation frequency drift resulting from the ambient temperature
or voltage fluctuation.
• Power/Battery lamps indicate battery consumption to prevent the unit from malfunctioning when the battery
level remarkably decreases.
• Up to 10 hours of continuous use with single AA alkaline battery.
• Wireless handheld microphone employs a built-in antenna.
• The state of battery consumption can be displayed on t h e receiver's indicator.
• Quick channel scanning and auto channel set-up.
• Infra-red auto channel set-up.
• Compact size and high reliability.
4. HANDLING PRECAUTIONS
• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids,
as doing so may result in unit failure.
• Never open nor remove the unit case to modify the unit. Refer all servicing to your nearest TOA
dealer.
• Take care not to drop the unit onto the floor nor bump it against a hard object as the unit could fail.
• Do not place the unit in locations of high temperature (e.g. in an ill-ventilated car in summer) or
high humidity as the unit could fail.
• Do not use the unit in locations where it is exposed to seawater.
• Avoid using a mobile telephone near the wireless microphone in use. Noise could be picked up.
• When installing, keep the unit as far away as possible from fluorescent lamps, digital equipment,
personal computers, and other equipment that generate high frequency noise.
• To clean, use a dry cloth. When the unit gets very dirty, wipe lightly with a cloth dampened in a
dilute neutral cleanser, then wipe with a dry cloth. Never use benzene, thinner, or chemically-
treated cleaning towel.
• When using two or more wireless microphones, keep them at least 50 cm away from each other to
avoid malfunctions or noise.
• Keep the wireless microphone at least 3 m away from the receiving antenna. Using the microphone
in close proximity to the antenna could result in malfunctions or noise.