General Description
The Telex Stratus 50-D is a medium-weight, active noise-reduction headset with an amplified, noise-canceling, electret microphone. It provides up to 25+dB 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.
This device complies with part 15 of the FCC Rules, Operation is subject to the following two conditions: (1) This device may not cause harm- ful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Design Features (See Figure 1)
Fit and Comfort
The Stratus 50-D 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 performance to 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 electric noise-canceling microphone to eliminate unwanted cabin noise from entering the communication system. To assure proper operation the mic 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, “teeth” are designed into the mic 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. Separate receiver and microphone plugs are provided as standard. 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.
