Telex Stratus 50 - Manual (Page 3)

Page 1
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 Cam tm ” 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
mm connectors) is for connecting cellular telephones. The larger of the two (3.5
mm connectors) is for connecting audio devices.