Telex Airman 850 Operating Instructions Manual
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Telex Airman 850 Operating Instructions Manual

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Telex
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Operating Instructions

Airman 850

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Summary of Contents for Telex Airman 850

  • Page 1: Operating Instructions

    Telex ® Operating Instructions Airman 850...

  • Page 2: General Description

    General Description The Telex Airman 850 is designed for use in aircraft with low noise levels. Ambient noise levels in such aircraft cockpits may be considered harmful when exposed to for long periods of time. In addition, these ambient noise levels require pilots to increase communications volume level for clear understandable communications.
  • Page 3 FAA Technical Standard Order The Telex Airman 850 headset including boom microphone is FAA TSO C57a and C58a approved. Tests were conducted using RTCA DO-214 and RTCA DO-160D. The headset was designed and is manufactured to meet the following environmental categories.
  • Page 4 Flexible Boom Permits Precise Mic Placement Boom Rotates Overhead for Noise Canceling Mic Placement on Either Electret Microphone Side of Head Figure 1 Airman 850 Reference View (Dual-Sided Model Shown) Note: See Page 8 for Available Replacement Parts Page 3...
  • Page 5 Controls The Airman 850 contains an On/Off switch to control ANR power and a Hi/ Low switch for controlling receiver volume. Cordage and Plugs The microphone cordage is protected inside the boom. A strain relief on the cord provides maximum durability.

  • Page 6: Headset Operation

    (Note the two stops below the boom housing). 3. With the Airman 850 resting securely on top of the head, check that the earphone housings are centered over the ears. Maximum performance depends on the proper fit of the headset.

  • Page 7: Microphone Gain Adjustment

    Volume Control Switch Figure 3 Volume Adjustment/ANR Switch Microphone Gain Adjustment The microphone gain has been factory-adjusted to the nominal level required for normal radio operation. Under normal circumstances microphone gain does not require adjustment. If needed, adjustment by a qualified avionics technician is recommended.

  • Page 8: Specifications

    Specifications Receivers: Type: Dynamic Impedance: 301317-000, 301317-001: 150 ohms +/-20% @ 1kHz 301317-002 and 301317-003: 600 ohms +/-20% @ 1kHz 301317-300: 300 ohms +/-20% @ 1kHz Note - Damage could occur to avionics equipment by the use of this headset if the equipment was manufactured for use with 600 ohm headsets only.

  • Page 9: Part Number Information

    Part Number Information Airman 850 Headset ........... Catalog no. 301317-000 Airman 850 Headset w/Single PJ-068 ....Catalog no. 301317-001 Airman 850 Headset w/XLR Connector ....Catalog no. 301317-002 Airman 850 Headset, 600 Ohm ......Catalog no. 301317-003 Airman 850 Headset Single-Sided ....... Catalog no. 301317-300 Replacement Ear Cushions ........
  • Page 10 LIMITED WARRANTY — VALID ONLY IN UNITED STATES AND CANADA Bosch Security Systems, Inc. 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, workmanship 36 months.

  • Page 11: Customer Service

    CUSTOMER SERVICE For information or technical assistance, call or write to Telex at: Customer Service Department Bosch Security Systems, Inc. 8601 E. Cornhusker Hwy Lincoln, NE U.S.A. (800) 553-5992 When returning equipment for repair, please enclose an explanation of the problem. If the equipment is covered under warranty, please enclose a copy of your proof of purchase.
  • Page 12 38110-189 Rev F 8/2010...

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