General Description, Design Features See Figure

General Description

The Telex Stratus 50 Digital is a medium-weight, active noise-reduction headset with boom-mounted microphone. It provides up to 25+dB patented digital tonal noise reduction of engine and blade noise, up to 15+dB of analog broadband noise reduction, and 29+dB of passive noise reduction. At 90 Hz the accumulative total is 50+dB of noise reduction - the best in the marketplace.

Design Features (See Figure 1)

Fit and Comfort

The Stratus 50 Digital incorporates unique features that allow the user to “custom fit” the headset for comfortable operation. Among the features is a headband design that distributes ear cushion pressure evenly over the entire ear with no pressure points. A detented slide adjustment on the headband allows the ear cup to be easily raised or lowered for proper fit. Contributing to the comfort fit is a yoke design that allows the ear cup to pivot in two planes assuring proper positioning on the head.

To adjust ear cup pressure, a patented “Comfort Camtm” is rotated to one of three tension settings. The last component in the fit and comfort is the 1” cushion made from heat sensitive slow recovery foam which will conform to your head to provide a perfect seal while spreading the weight over a large area eliminating pressure points.

Boom Microphone

The Stratus 50-D utilizes an amplified electret noise-canceling microphone to eliminate unwanted cabin noise from entering the communication system. To assure proper operation the microphone must be positioned perpendicular to the mouth close to the lips, slightly off center to the mouth. To facilitate pilot/co- pilot wearing, the boom rotates up to allow the boom to be worn on the left or right side. To minimize windscreen loss, “retaining hooks” are designed into the microphone housing to securely hold the windscreen in place.

Cordage and Plugs

The Stratus 50-D uses shielded cables to protect against RFI (Radio Frequency Interference) and EMF (Electro Magnetic Frequency). Strain relief is added to the cords and plugs to provide protection from wear and tear resulting from normal usage. The headset includes separate receiver and microphone plugs. The receiver plug is set up for stereo usage but a switch on the cordage controls stereo/mono operation.

A separate power cord is provided to allow aircraft power (via cigarette lighter adapter) to plug into the battery module on the headset cord. This will accommodate aircraft power from 8-32 Vdc.

Two cords for connecting cellular telephone and audio devices are included. These cords are standard straight through types. The smaller of the two (2.5

mmconnectors) is for connecting cellular telephones. The larger of the two (3.5 mm connectors) is for connecting audio devices.

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