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User Instructions
Air3100 Headset
Air3100L Headphone
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Unique Design Replaceable Wide Head Pad Detented Sliders Adjust to Any Size Head Earcups Pivot on Two Planes to Conform to Wearer Replaceable Ear Cushions Tension Adjust Knob Patented Ball and Socket Jointed Boom Rotates Replaceable Overhead for Mic Ear Cushions Placement on Either Side of Head Flexible Boom Permits Precise Mic Placement Noise Canceling Electret Microphone Figure 1 Air3100 Reference View
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General Description The Telex Air3100 is a medium-weight noise-reduction headset with amplified, noise-canceling, electret microphones. The Telex Air3100L is a headphone only and does not have a microphone. They both have a noise reduction rating of 21 dB, and are suitable for use in moderately noisy aircraft. All models feature a unique headband design that distributes ear cushion pressure evenly over the entire ear with no pressure points, unlike conventional designs which apply more pressure
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Operation 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, then rotate the adjustment knob 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. HIGH MEDIUM LOW Figure 2 Bo
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MIC GAIN Microphone Gain Adjustment ADJUSTMENT The microphone gain has been factory- ACCESS adjusted to the nominal level required for FAA certification, and it should normally not require readjustment. Readjustment by a qualified avionics technician is recommended. 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 Assembly Removal Press the release catch on the microphone assembly,
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Exploded View Parts List (See Figure 4) I. tem No.Pn art No D0 escriptio 3L 10 3100 8t 00037-000E1 arcup Assembly, Boom Lef – 1 8t 00037-002E– arcup Assembly, No Boom Lef 1 218t 00037-00E1 arcup Assembly, Righ 1 307t 00085-00C1 over, Lef 1 417t 00085-00C1 over, Righ 1 908t 00103-00R2 eceiver Assembly w/Foam Donu 2 10 08y 00136-00M1 icrophone Assembl – 12 17y 00486-00B1 oom Assembl – 10 97p 0381-00B1 oom Sto – 20 07f 00007-00B2 all Hal – 21 17g 00094-00B1 all Sprin – 6y 0074-130Y1 -Cord Assembl –
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Figure 4 Page 5 1 NOTE: Slip outside ball (20) around boom (11) . Place boom stop (19) into slot on boom (11) . Push inside ball half (20) to hold boom stop (19) into place. Orient ball half (20) with cup assembly so that boom will swing over but not under the earcup assembly (1).
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Specifications Receivers: Type: Dynamic Frequency Response: 350 Hz - 6 kHz Sensitivity: 100 ±5 dB SPL (1 kHz, 1 mW input) Impedance (at 1 kHz): 150 ohms (receivers wired in parallel) Microphone and Amplifier: (AIR3100 only) Element Type: Noise-canceling electret Frequency Response: 100 Hz - 3.5 kHz Sensitivity: -53 +2/-1 dB (ref:1 V/ µbar at 1 kHz with 12 Vdc supply voltage and 100 ohm load). Matching Impedance: 50-600 ohms Gain Adjustment Range: ± 5 dB (clockwise rotation increases gain) Opera
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LIMITED WARRANTY — VALID ONLY IN UNITED STATES AND CANADA TELEX Communications, Inc. (“Telex”) 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. Telex will, at its option, repair or replace, free of charge, such defective products subject to the following conditions: 1. Delivery of the product o
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NOTES
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NOTES
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38110-015 Rev B 6/02
