Telex 50-D Headphones User Manual
Contents
1. 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 Page 1 Microphone Bias Voltage Requirements The boom microphone operates on a voltage of 8 16 VDC Output voltage 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 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 ea BE 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 rechargeable batteries or lithium batteries 1 Slide the battery door down in the direction of the arrow then up t2. 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 FAA certification 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 Page 6 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 Wiring Diagram 206 DIA MCROPHONE PLUG 200 DIA SPEAKER PLUG BLUE SPKR GND Figure 13 Wiring Diagram for Fixed Wing Version Page 7 Specifications Receivers Type Dynamic Frequency Response 50 Hz 10 kHz Sensitivity 95 5 dB SPL 1 kHz 1 mW input Impedance Max Volume Je 300 ohms per side y A 150 ohms Headset
3. AILABLE TO ANY PERSON NO PERSON HAS ANY AUTHORITY TO BIND TELEX TO ANY REPRESENTATION OR WARRANTY OTHER THAN THOSE PROVIDED BY THIS LIMITED WARRANTY TELEX SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES CAUSED BY FAILURE OR OTHERWISE OF THE PRODUCT Some states do not allow exclusions or limitations of incidental or consequential damages or limitations on how long an implied warranty lasts so the limitations or exclusions herein may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Page 10 CUSTOMER SERVICE For information or technical assistance call or write to Telex at Customer Service Department Telex Communications Inc 12000 Portland Ave So Burnsville MN 55337 U S A 952 884 4051 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 i
4. Power 4AA Batteries or Panel Power from 8 32 Vdc Microphone and Amplifier Element Type Noise canceling electret Frequency Response 100 Hz 3 5 kHz Sensitivity 53 2 1 dB ref 1 V 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 Supplied by aircraft radio 8 16 Vdc Cordage Straight Y cord 9 ft 2 74 m Connectors Microphone Plug PJ 068 or equivalent Reciever Plug PJ 055 or equivalent DC Jack 2 5mm Dia Pin Weight Effective Head Weight Approximately 18 5 oz 524 g Color Lt Grey Purple Page 8 ORDERING INFORMATION Stratus Headset with electret mic battery module and carrying Case unseren Catalog no Aircraft Power Cord ccccssccesseeeeeeeeeneeeeeneeees Catalog no 1 Foam filled ear cushions package of 2 Catalog no Headband Pad necios Catalog no Replacement electret microphone Catalog no Microphone windscreen electret Catalog no Clothing CAPES rent Catalog no Zippered Pouch cccecccsececeeeceeeeeeeeseeeeeeeesaaes Catalog no Page 9 301125 000 550216 001 800456 015 800456 017 800136 000 800456 000 590637 000 500266 000 LIMITED WARRANTY VALID ONLY IN UNITED STATES AND CANADA TELEX Communications Inc Telex warrants to the user who origin
5. Telex User Instructions Om Stratus 50 D Active Noise Reduction Headset TELEX Detented Sliders Adjust to Any Size Head Patented Tension Adjust Knob Comfort Cam Replaceable Ear Cushions Noise Canceling Electret Microphone Replaceable Wide Head Pad Earcups Pivot on Two Planes to Conform to Wearer Flexible Boom Permits Precise Mic Placement Patented Ball and Socket Jointed Boom Rotates Overhead for Mic Placement on Either Side of Head Figure 1 Stratus Reference View 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 entir
6. ally purchased the product delivered with this card that the product will be free from defects in material and workmanship for the following periods after such date of purchase Material 36 months workmanship 36 months Telex will at its option repair or replace free of charge such defective products subject to the following conditions 1 Delivery of the product or parts postage prepaid to the Telex dealer authorized service facility or factory 2 Determination by Telex that a defect exists and is covered by the limited warranty Defects due to alteration repair by an unauthorized person insertion of non Telex parts misuse accidental damage use of the equipment for purposes other than those for which it was designed and the like are not covered by this limited warranty and repairs thereof will be subject to normal service charges 3 Repairs and replacement parts are covered under this limited warranty only for the unexpired term of the original limited warranty 4 Products purchased from unauthorized dealers are not warranted 5 You must fill out and return the attached registration card within 10 days after such purchase or this limited warranty is void THIS LIMITED WARRANTY IS EXPRESSLY IN LIEU OF ANY EXPRESS OR IMPLIED WARRANTY INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WHICH EXTENDS BEYOND THE TERM HEREOF THE REMEDIES PROVIDED BY THIS LIMITED WARRANTY ARE THE ONLY REMEDIES AV
7. e ear with no pressure points Adetented 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 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
8. e headset as described below 7 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 Side View Top View Figure 8 Headband Pressure Adjustment Page 4 Headset Operation Cont 8 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 adjust both sides of the headband the same to keep the headband and pad properly centered over the head Figure 9 Headband Size Adjustment 9 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 JO J right side Figure 10 FAN Volume Control Figure 10 Volume Adjustment Page 5 Stratus Controls Power Switch the ON OFF button to turn the Stratus on or
9. o rotate the battery door Figure 3 2 Place the batteries into the battery module as shown 3 Slide the battery door back into place Figure 3 Battery Installation Page 2 Headset Operation 1 Connect the headset as shown in Figure 4 Set the MONO STEREO headphone switch to match the type of sound system in your aircraft lf the headset is set for stereo and the intercom is set for mono sound will only come out of one earcup To Radio Receiver OUT Jack Figure 4 Headset Connections Mono Stereo lt To Radio Microphone IN Jack eee Headphone Switch 2 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 3 Reshape the boom so that the microphone will be in front of the mouth 4 For best noise cancellation position the microphone as close to the mouth as possible and speak in a normal voice Figure 7 5 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 Page 3 Headset Operation Cont 6 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 Proper performance depends on proper fit of th
10. s 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 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 Page 11 Notes Notes TELEX TELEX COMMUNICATIONS INC 12000 Portland Ave S Burnsville MN 55337 U S A 38110 073 Rev D 7 02
Download Pdf Manuals
Related Search