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Telex Echelon 25XT - page 1
User Instructions Te l e x ® Echelon 25XT Noise Reduction Headset ...
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Telex Echelon 25XT - page 2
Earcups Pivo t on T wo Planes to Conf orm to Wearer Replaceable Wide Head Pa d Echelon 25XT Noise Reduction Headset V olume Detented Sliders Adjust to Any Size Head Earcups Pivot on T wo Planes to Conform to Wearer Patented T ension Adjust Knob (Comf or t Cam tm ) Replaceable Ear Cushions Noise Canceling Electret Microphone Flexib le Boom P er mits ...
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Telex Echelon 25XT - page 3
Page 1 Headband Size Adjustment T o adjust the headband size, move the earcup sliders up or down on the headband. Size is properly adjusted when the earcups are centered over the ears. It is important to make the same adjustments to both sides of the headband to keep the headband and pad properly centered over the head. HIGH MEDIUM LOW Comfort Cam? ...
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Telex Echelon 25XT - page 4
Page 2 Connection Connect the headset to the aircraft radio or intercom system as shown in Figure 4. Figure 4 Echelon 25XT Connectors Stereo Mono Switch This switch is located on the Y -cord (Figure 4). Set the switch to stereo for aircraft with a stereo intercom system. Set the switch to mono for monaural intercom systems or for direct connection ...
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Telex Echelon 25XT - page 5
Page 3 Figure 5 Mic Gain Adjustment Microphone Gain Adjustment The microphone gain has been factory-adjusted to the nominal level required for aircraft use and should normally not require readjustment. Readjustment by a qualified avionics technician is recommended. T o access the gain trimmer , insert a small flat- blade screwdriver through the acc ...
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Telex Echelon 25XT - page 6
Page 4 Specifications Receivers T ype: Dynamic Impedance: Accepts 150-600 ohm sources Frequency Response: 350 Hz - 3.0 kHz ± 6dB Sensitivity: 90 ±5 dB SPL for 1 mW , 1 kHz input Maximum Power Input: 30 mW Microphone/Amplifier Assembl y Microphone T ype: Noise-canceling electret condenser Output Impedance: 50 ohms (designed for radio input impedan ...
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Telex Echelon 25XT - page 7
Page 5 TELEX COMMUNICA TIONS, INC. - LIMITED W ARRANTY Uniform Limited Warranty: T elex branded products are warranted by T elex Communications, Inc. against malfunction due to defects in materials and workmanship for a specified period, as noted in the individual product line statement s below , beginning with the date of original purchase by the ...
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Telex Echelon 25XT - page 8
CUST OMER SER VICE For information or technical assistance, call, write, or email T elex at: Customer Service Department T elex Communications, Inc. 12000 Portland A ve. So. Burnsville, MN 55337 U.S.A. (952) 884-4051 www .telex.com/aircraft When returning equipment for repair , please enclose an explanation of the problem. And, if the equipment is ...
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Telex Echelon 25XT - page 9
Notes ...
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Telex Echelon 25XT - page 10
Notes ...
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Telex Echelon 25XT - page 11
Notes ...
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Telex Echelon 25XT - page 12
LIT000014 Rev A 04/2006 ...
