Infrared Wireless System
Secure Wireless Communication - Infrared Wireless Microphone Systems†
Infrared microphone is widely used as a convenient wireless communication tool, because of its preventive features against eavesdrop and radio interference. This content describes "Infrared Wireless Microphone System" in easy-to-understand way.
What's infrared?Infrared is the light invisible to the eye and harmless to the body. There are invisible light rays, besides seven visible light spectrum, such as violet, indigo, blue, green, yellow, orange and red. Infrared light is one of invisible lights having wavelengths(*1)longer than that of red ray, and therefore called "infra-red"ray. The light with shorter wavelength than that of visible violet is called ultraviolet ray. While ultraviolet light has ill effect to human body, e.g. sunburn, infrared light does not.
What're advantages of infrared wireless microphone?
Light does not penetrate walls, therefore the infrared microphone has three features as below
Unlike radio waves, infrared ray does not penetrte walls. Information transmitted through infrared ray will be highly protected against outdoor listening by the third party using a device operating on radio wave.
Secure communication is assured in urban area without being disturbed by jamming of radio wave communication.
Designed for stable voice transmission, thanks to two infrared emitters carefully located on a microphone body shape that helps prevent the emitters from being accidentally covered by a hand when holding the microphone.
Comes with a built-in 2-channel fixed-frequency tuner.
Enables installation of up to 4 infrared light receivers per unit
Equipped with signal reception light and knob for microphone volume control.
Equipped with 4 receiver mixing outputs and 2 distribution outputs.
By using the IR-700D in conjunction with IR-702T and YW-1022/1024, the system with up to 16 infrared receivers can be configurable.
Rack-mountable with optional brackets (MB-WT3/MB-WT4)
Easy-to-wear, neck-suspended design means unit can be ready for use quickly. Lightweight body can be worn for long periods of time without causing fatigue (130g with 2 alkaline batteries).
- Infrared light emission intensity adjustable at 2 levels.
- 2 selectable channel frequencies
- Antibacterial treatment
- Employs an electret condenser microphone unit.
- Low-battery indicator.
- Can be used with a built-in microphone or external microphone.
- An external MIC input level adjustment function allows sensitivity adjustment if the connected external microphone has a different sensitivity.
- Color stickers supplied to distinguish one unit from other wireless microphones.
Capable of charging up to 2 microphones (both hand-held and hands-free types) at a time. With rapid charging feature, up to 2 infrared microphones can be simultaneously charged in 3 hours (maximum).
Supplied wall-mounting brackets facilitate installation.
Can be installed in an electric circuit box.
Equipped with power indicator LED.
Reception area is up to approx. 15m line of sight.
Infrared light reception angle can be changed.