This compact, true diversity system is an outstanding value at £489 for the Bodypack Lavalier packages. The UWP-V Series replaces the UWP-C Series, with enhancements that include: a rugged, all-metal chassis and Mic/Line switchable input at the transmitter. PLL-synthesized tuning, space-diversity reception, and all the professional wireless features that made the UWP-C series a popular choice. 

The camera-mountable URX-P2 receiver features swivel antennas and space-diversity technology which stabilizes reception and minimizes RF interference by selecting the strongest incoming signal. It features a convenient auto channel scanning function that automatically detects unoccupied channels, allowing operators easily to select the most appropriate channel to use. A stereo mini-jack output with monitor volume control is featured and both stereo, mini and XLR cables are provided. An LCD display provides channel & frequency information, battery life, RF-input level, audio-output status and accumulated operating time. The receiver operates on two “AA” batteries for up to 8 hours. The URX-P2s compact design and included shoe-mount adapter allows for easy mounting to most camcorders.

The improved UTX-P1 plug-in and UTX-B2 bodypack transmitters feature comprehensive LCD displays and a Mic/Line-level switch for standard wired microphones line-level sources. Selectable output power provides a choice between 5mW output, which is suitable for simultaneous multi-channel operation or 30mW output for long distance transmission. The 5mW output mode also helps conserve battery life. Like the URX-P2 receiver, the transmitters feature 188 selectable UHF frequencies and operate for up to 8 hours on two “AA” alkaline batteries.

This was my first break from Sehnheizer radio mics, what attracted me to this system was the diversity receiver and the 3.5 jack monitor socket, this allows you to stick your headphones on and check the radio mic without having to switch on your camcorder. It is also a lot quieter than the  G2 Sehnheizer radio mic therefore it is used 99% of the time in my kit. The addition of diversity makes this almost a flawless radio system certainly for work of up to 25 meters. I also find the 2 “AA” batteries last a fair bit longer than the equivalent Sehnheizer 9V battery set-up and the battery indicator is a great feature.

Advanced Sound for DSLR’s from Steve Weiss, Zacuto USA on Vimeo.

General Description

Operating Principle
In the optical microphone, light from an LED is directed onto a reflective diaphragm via an optical-fibre cable (transmitter optical waveguide). The membrane reflects part of the light into a receiver optical waveguide. If the diaphragm is moved by sound signals, a displacement of the reflected light beam occurs, with the result that more or less light is coupled into the receiver waveguide. At the end of the receiver waveguide, a photodiode converts the light intensity variations into electric signals. 

Advantages
The optical principle is the only microphone principle in which the microphone head and the electronics can be located far away from each other. 

The component parts of the MO 2000 H acoustic-optical microphone head (external diameter ½”) are made of a plastic material that is suitable for use in areas with aggressive substances (gases, salts, humidity) and radiation. All components of the microphone head, including the optical waveguides, are free of metal; no electric current flows. 

Applications
These advantages make it possible to use the optical microphone in areas in which other microphones are not suitable.
For example, the optical microphone can be used in potentially explosive atmospheres, such as for the acoustic monitoring of gas drying plants in natural gas production (IAS MO 2000 SET). In this case, the microphone can “hear” slow leaks, which, due to their small size, cause neither a pressure loss nor an alarm message in the other monitoring systems. 

In medical applications, the microphone is ideal for use in magnetic resonance imaging (MRI), for example to maintain communication with the patient during MRI scans or to achieve active noise cancellation in MRI. The optical microphone does not disturb the imaging process and is itself not influenced by the strong fields inside magnetic resonance imaging equipment.

In measuring technology, the microphone is ideal for use in EMI/EMC laboratories, as it does not influence the electric field. In this case, for example, it functions like an “ear on a mobile phone”. 
A further application possibility is in the field of undetectable acoustic monitoring.

Delivery Includes

• 1 optical microphone with MO 2000 H optical cable (3 m)
• 1 MO 2000 CU central unit
• 1 power supply with various adapters (EU, UK, US)
• 1 carrying case
• 1 operating instructions