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Telex STRATUS Stratus 50-D manual

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Table of contents for the manual

  • Page 1

    User Instructions Te l e x ® Stratus 50-D Active Noise Reduction Headset[...]

  • Page 2

    Flexible Boom Permits Precise Mic Placement Earcups Pivot on T wo Planes to Conform to W earer Replaceable Wide Head Pad Patented Ball and Socket Jointed Boom Rotates Overhead for Mic Placement on Either Side of Head Figure 1 Stratus Reference V iew Noise Canceling Electret Microphone Patented T ension Adjust Knob (Comfort Cam tm ) Detented Sliders[...]

  • Page 3

    Page 1 General Description The T elex 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 accumulati[...]

  • Page 4

    Microphone Bias V oltage 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[...]

  • Page 5

    Page 3 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. If the headset is set for stereo and the intercom is set for mono, sound will only come out of one earcup. 2. Rotate the entire boom overhead to wear the microphone on either the right or lef[...]

  • Page 6

    Page 4 Figure 8 Headband Pressure Adjustment HIG H ME DI UM LO W KNOB ADJUSTMENT SET TINGS 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 performa[...]

  • Page 7

    Page 5 9. V olume 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). Headset Operation (Cont.) 8. Headband Size Adjustment T o adjust the headband size, move the [...]

  • Page 8

    Stratus Controls Power Switch the ON/OFF button to turn the Stratus on or of f. Green LED indicates power on. Low Battery Red LED indicates 20% or less battery life remaining. Figure 1 1 Stratus DSP Controller MIC GAIN ADJUSTMENT ACCESS Microphone Gain Adjustment The microphone gain has been factory-adjusted to the nominal level required for F AA c[...]

  • Page 9

    Figure 13 Wiring Diagram for Fixed-W ing V ersion RED BL K SHLD . 2 0 6 DI A. M I CROP HO NE P L UG RED BL K SHLD . 25 0 DI A. SPEAKER PL UG SPKR - L SPKR - R SPKR - GND MI C + MI C - Ear Cushion Replacement T o remove an old ear cushion, simply grasp it and pull it off the earcup. T o install a new ear cushion, start at the top of the earcup. Plac[...]

  • Page 10

    Page 8 Specifications Receivers: T ype: Dynamic Frequency Response: 50 Hz - 10 kHz Sensitivity: 95 ± 5 dB SPL (1 kHz, 1 mW input) Impedance (Max. V olume): Stereo.........................................300 ohms per side Monaural...................................................150 ohms Headset Power: 4AA Batteries or Panel Power from 8-32 Vdc Mi[...]

  • Page 11

    Page 9 ORDERING INFORMA TION Stratus Headset, with electret mic, battery module, and carrying case . ............................................. Catalog no. 301 125-000 Aircraft Power Cord ............................................ Catalog no. 550216-001 1” Foam-filled ear cushions (package of 2) ......... Catalog no. 800456-015 Headband Pad [...]

  • Page 12

    Page 10 LIMITED W ARRANTY — V ALID ONL Y IN UNITED ST A TES AND CANADA TELEX Communications, Inc. (“T elex”) warrants to the user , who originally 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, wor[...]

  • Page 13

    Page 1 1 CUSTOMER SER VICE For information or technical assistance, call or write to T elex at: Customer Service Department T elex Communications, Inc. 12000 Portland A ve. 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 warrant[...]

  • Page 14

    Notes[...]

  • Page 15

    Notes[...]

  • Page 16

    381 10-073 Rev D 7/02[...]