Telex STRATUS 50-D - Manual (Page 3)

Page 1
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.
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 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 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.
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.