Telex Stratus 50 User's Manual
Contents
1. Page 12 Notes Page 13 TELEX TELEX COMMUNICATIONS INC 12000 Portland Ave S Burnsville MN 55337 U S A LITO00010 Rev A www telex com aircraft 04 20062. 55336 Tel 320 864 3177 Fax 320 864 3225 Page 11 CUSTOMER SERVICE For information or technical assistance call write or email Telex at Customer Service Department Telex Communications Inc 12000 Portland Ave So Burnsville MN 55337 U S A 952 884 4051 www telex com aircraft When returning equipment for repair please enclose an explanation of the problem And if the equipment is covered under warranty please enclose a copy of your proof of purchase The equipment must be accompanied by documentation stating your name return address and telephone number Return equipment for factory repair to Customer Service Department Telex Communications Inc 1720 East 14th St Glencoe MN 55336 U S A 320 864 3177 Warranty Repairs If in warranty no charge will be made for the repairs Equipment being returned for warranty repair must be sent prepaid and will be returned prepaid Non warranty Repairs Equipment that is not under warranty must be sent postage prepaid to Telex If requested an estimate of repair costs will be issued prior to service Once you approve repair and repair of equipment is completed the equipment will be returned on a collect on delivery basis Collect charges may be avoided by sending a signed check for payment in full along with your signed estimate approval form the estimate includes the shipping charge BE EE AVIATION Stratus 50 Digital x Note Subject to change without notice
3. down See Figure 9 on the next page Proper performance depends on proper fit of the headset as described below 9 Headband Pressure Adjustments There are three pressure settings Increasing the pressure will improve the seal between the earcup and the head for greater noise reduction To change the pressure setting remove the headset and fold the earcup inward as shown in Figure 8 then rotate the Comfort Cam to the desired setting Repeat for both earcups Both sides of the headband should be set to the same pressure setting to keep the headband properly centered on the head Comfort Cam Adjustment Settings d HIGH MEDIU To LE Side View Top View Figure 8 Headband Pressure Adjustment Page 5 Headset Operation cont 10 Headband Size Adjustment To adjust the headband size move the earcup sliders up or down on the headband Figure 9 Size is properly adjusted when the earcups are centered over the ears It is important to make the same adjustments on both sides of the headband the same to keep the headband and pad properly centered on the head Figure 9 Headband Size Adjustment 11 Volume Adjustment When the microphone is worn on the left side volume is increased by rotating the top of the volume controls toward the front of the head Control operation is reversed when the microphone is worn on the right side Figure 10 Volume control affects communications AY Volume as we
4. LIMITATION OF CERTAIN DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU IN SUCH STATES AND COUNTRIES TELEX SHALL BE LIABLE FOR NO MORE THAN THE DIRECT DAMAGES FOR BODILY INJURY AND OR REAL OR PERSONAL PROPERTY ARISING FROM THE NEGLIGENCE OF TELEX Other Rights This warranty gives you specific legal rights and you may also have other rights depending upon where you live Obtaining Warranty Service To obtain warranty service a customer must deliver the product prepaid to the appropriate Telex Service Department listed below or any of its authorized service representatives together with proof of purchase of the product in the form of a bill of sale or invoice Applicable Law The validity performance and construction of this limited warranty shall be governed by the laws of the State of Minnesota without reference to its choice of law principles The Minnesota federal courts and or the state courts located in Hennepin County Minnesota shall have exclusive personal and subject matter jurisdiction over and the parties shall each submit to the jurisdiction of Such courts and to venue in Minnesota with respect to any dispute concerning the product or pursuant to this limited warranty and all objections to such jurisdiction or to such venue are hereby waived For additional warranty repair or service information contact the Telex Service Department listed below USA Canada amp Latin America 1720 E 14 Street Glencoe MN
5. Telex User Instructions Stratus 50 Digital Active Noise Reduction Headset TELEX The Stratus 50 Digital provides the best noise reduction available on the market Detented Sliders Adjust to Any Size Head Replaceable Wide Head Pad Earcups Pivot on Patented Two Planes to Tension Conform to Adjust Knob Wearer Comfort Replaceable Ear Cushions Ball and Socket Jointed Boom Rotates j Noise Canceling B E Flexible Boom Permits Electret Microphone acementon EINEN Precise Mic Placement Side of Head Figure 1 Stratus 50 Digital 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 and 2 this device must accept any interference re ceived including interference that may cause un desired operation 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 f
6. dio interface is discovered the cellular audio interface should be disabled using the accessory mute described later in this manual Page2 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 Power Cord uni SUA Operating Voltage 8 32 Vdc 45 Locking Figure 2 Panel Power Option Battery Power The battery module requires 4 AA batteries Alkaline batteries are recommended for best performance Do not use nickel cadmium NiMH rechargeable or lithium batteries 1 Slide the battery door down in the direction of the arrow then up to rotate the battery door Figure 3 2 Place the batteries into the battery module as shown 3 Slide the battery door back into place Cellular telephone auxiliary audio input see above for details Figure 3 Battery Installation Headset Operation 1 Verify batteries are installed and headset powers on see previous section Connect panel power cord if not using battery power Page 3 Headset Operati
7. e 8 Specifications Receivers Type Dynamic Frequency Response 50 Hz 10 kHz Sensitivity 95 5 dB SPL 1 kHz 1 mW input Impedance Max Volume S m E 300 ohms per side 150 ohms Headset Power 4AA Batteries or Panel Power from 8 32 Vdc Microphone Element Type Amplified noise canceling electret Frequency Response 100 Hz 3 5 kHz Sensitivity 50 6 dB ref 1V ubar at 1 kHz with 12 Vdc supply voltage and 470 ohm DC 150 ohm AC load Matching Impedance 50 600 ohms Gain Adjustment Range 5 dB clockwise rotation increases gain Operating Voltage 8 16 Vdc supplied by aircraft radio Cordage Straight Y cord 9 ft 2 74 m Connectors Microphone Plug PJ 068 or equivalent Receiver Plug PJ 055 or equivalent DC Jack 2 5mm Dia Pin 2 5mm 3 conductor audio jack for connection to cell phone connection 3 5mm 3 conductor audio jack for connection to auxiliary audio Weight Effective Head Weight Approximately 18 5 oz 524 g Color Dark Grey Black Page 9 Ordering Information Stratus Headset with electret mic battery module and carrying case Dark Grey Black Catalog no PRD000010000 Aircraft Power Cord Catalog no 550216001 1 Foam filled ear cushions package of 2 Catalog no 800456021 Headband Pad oer ae Catalog no 800456017 Replacement electret microphone Catalog no 800136100 Micr
8. eatures 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 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 fr
9. ll as cellphone and auxiliary audio wp Control inputs 12 Accessory muting The Stratus 50 Digital headset is equipped with a switch to quickly and completely disable the cellphone and auxillary audio devices Figure 4 Figure 10 Volume Adjustment Page 6 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 percent or less battery life remaining Figure 11 Stratus Battery Box 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 Any changes to the mic gain should be done by a qualified avionics technician To access the gain trimmer insert a small flat blade screwdriver through the access hole in the mic assembly Clockwise rotation of the trimmer increases gain MIC GAIN ADJUSTMENT ACCESS Figure 12 Microphone Gain Adjustment Ear Cushion Replacement To remove an old ear cushion simply grasp it and pull it off the earcup To install a new ear cushion start at the top of the earcup Place the flap on the back of the ear cushion over the lip along the top of the earcup Then pull the bottom of the ear cushion down over the lip at the bottom of the earcup Page 7 Wiring Diagram A BLUE WHITE SHLD Ras Figure 13 Standard Version Pag
10. om 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 Page 1 Auto Shut Off The Stratus 50 Digital contains noise sensing features to measure ambient noise levels When ambient noise levels are low for 5 to 7 minutes continuously the headset automatically shuts off This feature will prolong battery life and prevent discharge of batteries if the headset is accidentally left on after use Cellphone audio interface The Stratus 50 Digital includes a unique amplified interface allowing for the connection of a cellular telephone and an audio input simultaneously This configuration allows the user to set up before take off and eliminates the need to re configure cords and equipment when operating the aircraft The other unique feature of this interface is the ability to obtain power from the aircraft s communications s
11. on cont 2 Connectthe headset as shown in Figure 4 If using the standard version set the stereo mono 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 Mute Switch To Radio Microphone IN Jack ur Cell Phone Jack 4 cm To Radio Receiver OUT Jack B Auxilary Jack Stereo Mono Switch TO Figure 4 Headset Connections 3 Connect cellular telephone and or audio input devices as desired 4 Rotate the entire boom overhead to wear the microphone on either the right or left side of the head See Figure 5 Figure 5 Microphone Placement 5 Reshape the boom so that the microphone will be in front of the mouth 6 For best noise cancelation position the microphone as close to the mouth as possible and speak in a normal voice Figure 7 7T For mic replacement press the release catch and carefully pull out the mic element Avoid pulling the connecting wires Figure 6 Figure 6 Figure 7 Mic Element Removal Mic Placement Page4 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
12. ophone windscreen electret Catalog no 800456000 Clothing Catalog 590637000 Zippered Pouch Catalog no CME000009000 Cell Phone Accessory Cable Catalog no 550216002 Auxillary Device Accessory Cable Catalog no 550216003 Page 10 TELEX COMMUNICATIONS INC LIMITED WARRANTY Uniform Limited Warranty Telex branded products are warranted by Telex Communications Inc against malfunction due to defects in materials and workmanship for a specified period as noted in the individual product line statements below beginning with the date of original purchase by the end user If such malfunction occurs during the specified period the product will be repaired with new or remanufactured equivalent parts and products or replaced at our option without charge The product will be returned to the customer postage prepaid Exclusions and Limitations The limited warranty does not apply to a exterior finish or appearance b certain specific items described in the individual product line statements below c malfunction resulting from use or operation of the product other than as specified in the product data sheet or owner s manual d malfunction resulting from misuse or abuse of the product including accidents e defects resulting from excess moisture lightning or power surges or f malfunction occurring at any time after repairs ha
13. ve been made to the product by anyone other than a Telex Service Department employee 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 Other Express or Implied Warranties Excluded TO THE EXTENT PERMITTED BY APPLICABLE LAW THE WARRANTIES SET FORTH HEREIN ARE IN LIEU OF AND EXCLUSIVE OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED SPECIFICALLY EXCLUDED WITHOUT LIMITATION ARE THE WARRANTIES OF MERCHANTABILITY FITNESS FOR USE OR FOR A PARTICULAR PURPOSE AND WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE OR ANY OTHER MATTER IF UNDER APPLICABLE LAW IMPLIED WARRANTIES MAY NOT BE VALIDLY EXCLUDED THE DURATION OF SUCH IMPLIED WARRANTIES IS LIMITED TO THE WARRANTY PERIOD Limitation of Remedies Certain Damages Excluded REPAIR OR REPLACEMENT OF DEFECTIVE PRODUCTS ARE THE SOLE AND EXCLUSIVE REMEDIES PROVIDED BY TELEX TO THE CUSTOMER OR TO ANY OTHER PERSON AND SHALL CONSTITUTE FULL SATISFACTION OF ALL CLAIMS WHETHER BASED ON CONTRACT NEGLIGENCE STRICT LIABILITY OR OTHERWISE TELEX s MAXIMUM LIABILITY SHALL NOT EXCEED THE ACTUAL PURCHASE PRICE PAID FOR THE PRODUCT BY THE CUSTOMER TELEX AND ITS SUBSIDIARIES SHALL NOT BE LIABLE FOR ANY INDIRECT INCIDENTAL PUNITIVE SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING WITHOUT LIMITATION INJURY TO PERSONS OR PROPERTY OR LOSS OF USE SOME STATES AND COUNTRIES DO NOT ALLOW THE EXCLUSION OR
14. ystem This feature results in increased battery life for the ANR system while maintaining the benefits of an amplified inter face By amplifying the inputs the Stratus 50 Digital allows the user to adjust volume level at the headset contributing to the ability to not need re configur ing while in flight The Telex Stratus 50 Digital cell phone audio interface has been designed to function with the widest array of cellular telephones and portable audio devices There are cell phones and audio devices on the market not designed to industry physical and electrical standards These devices are not guaranteed to function properly with the Stratus 50 Digital headset Cell phone usage while in the air or under situations requiring full attention is not recommended Please see the Telex web site for additional information www telex com aircraft Microphone Bias Voltage Requirements The boom microphone operates on a voltage of 8 16 VDC Output impedance is 50 ohms designed for radio input impedances from 50 600 ohms If you are uncertain whether your avionics equipment meets this requirement consult the avionics equipment manufacturer The cellular telephone auxiliary audio interface of the Stratus 50 Digital 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 unacceptable performance of the boom microphone or cellular au
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