Instruction/ maintenance manual of the product 50-D Telex
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User Instructions Te l e x ® Stratus 50-D Active Noise Reduction Headset.
Flexible Boom Permits Precise Mic Placement Earcups Pivot on T wo Planes to Conform to Wearer Replaceable Wide Head Pad Patented Ball and Socket Jointed Boom Rotates Overhead for Mic Placement on Eith.
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.
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 .
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.
Page 4 Figure 8 Headband Pressure Adjustment HIG H MED IUM LOW KNOB ADJUSTMENT SETTI NGS 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).
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).
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 13 Wiring Diagram for Fixed-Wing V ersion RED BLK SHLD . 2 0 6 DI A. MI CROPHONE P L UG RED BLK SHLD . 25 0 DI A. SPEAKE R 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.
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.....................
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) .
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,.
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 Ave. So. Burnsville, MN 55337 U.S.A. (952) 884-4051 When returning equipment for repair , please enclose an explanation of the problem.
Notes.
Notes.
381 10-073 Rev D 7/02.
An important point after buying a device Telex 50-D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Telex 50-D yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Telex 50-D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Telex 50-D you will learn all the available features of the product, as well as information on its operation. The information that you get Telex 50-D will certainly help you make a decision on the purchase.
If you already are a holder of Telex 50-D, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Telex 50-D.
However, one of the most important roles played by the user manual is to help in solving problems with Telex 50-D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Telex 50-D along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
