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Telex ® User Instructions Stratus 50-D Active Noise Reduction Headset...
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Overhead for Mic Placement on Either Side of Head Figure 1 Stratus 50-D Reference View This device complies with part 15 of the FCC Rules, Operation is subject to the following two conditions: (1) This device may not cause harmful interference,...
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.
The cellular telephone / auxiliary audio interface of the Stratus 50-D relies on this same microphone bias voltage for operation. If less voltage / higher impedance is normal in your system, this interface may not operate properly. If unusual or...
Headset Power The headset will operate with either 4 AA batteries or panel power from 8-32 Vdc. Panel Power Option An optional power cord is provided for use in negative ground electrical systems only. Do not attempt to use with positive ground electrical systems. The power cord is designed to connect the battery module to the aircraft power via the cigarette lighter jack.
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Headset Operation Cont. 2. Connect the headset as shown in Figure 4. If using the standard version, set the MONO/STEREO headphone switch to match the type of sound system in your aircraft. If the headset is set for stereo and the intercom is set for mono, sound will only come out of one earcup.
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Headset Operation (Cont.) 8. With the headband resting securely on the top of the head, check that the ear cups are centered over the ears. Reposition them if necessary by moving the headband sliders up or down (See Figure 9 on the next page).
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Volume control affects comunications Control as well as cellphone and auxiliary audio inputs. 12. Accessory muting The Stratus 50-D headset is equipped with a switch to quickly and completely disables the cellphone and auxillary audio Figure 10 devices (Figure 4).
Stratus Controls Power Switch the ON/OFF button to turn the Stratus on or off. Green LED indicates power on. Low Battery Red LED indicates 20% or less battery life remaining. Figure 11 Stratus DSP Controller Microphone Gain Adjustment The microphone gain has been factory-adjusted to the nominal level required for aviation use, and it should normally not require readjustment.
Wiring Diagram .206 DIA. MICROPHONE PLUG MIC + MIC - SHLD .250 DIA. SPEAKER PLUG BLUE SPKR - L SPKR - R WHITE SHLD SPKR - GND Figure 13 Standard Version Page 8...
Ordering Information Stratus Headset, with electret mic, battery module, and carrying case (Lt. Grey/Purple) ....... Catalog no. 301125200 Stratus Headset, with electret mic, battery module, and carrying case (Lt. Grey/Black) ........ Catalog no. 301125203 Aircraft Power Cord ............Catalog no. 550216001 1”...
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(f) malfunction occurring at any time after repairs have been made to the product by anyone other than a Telex Service Department or any of its authorized service representatives. The Warranty is void if the label bearing the product serial number (if applicable) has been removed or defaced.
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Non-Warranty Repairs - Equipment that is not under warranty must be sent prepaid to Telex. If requested, an estimate of repair costs will be issued prior to service. Once your approval for repair, and repair of equipment is completed, the equipment will be returned on a collect basis.
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