Telex 25XT User Manual

Telex

®

User Instructions

Echelon 25XT
Noise Reduction Headset

Patented

Tension

Adjust Knob

(Comfort

Camtm)

Replaceable

Wide Head Pad

Detented Sliders

Adjust to

Any Size Head

Earcups Pivot

on Two Planes

to Conform to

Wearer

Volume

Replaceable

Ear Cushions

Boom Rotation for

Earcups Pivot on

Two Planes to

Conform to

Wearer

Placement on Either

Side of Head

Noise Canceling

Electret Microphone

Echelon 25XT Noise Reduction Headset

Flexible Boom

Permits Precise Mic

Placement

Headband Size Adjustment

To 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.

Headband Pressure Adjustment

There are three pressure settings for
headband comfort. 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
Comfort Cam 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.

Figure 1

Headband Size Adjustment

Comfort Cam™

ADJUSTMENT KNOB SETTINGS

HIGH MEDIUM LOW

Figure 2

Headband Pressure Adjustment

Left or Right Side Microphone Placement

1. Rotate the boom as shown.

2. Reshape the boom so that the
microphone will be at the
corner of the mouth.

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Figure 3

Rotating and Reshaping the
Boom

Connection

Connect the headset to the aircraft radio or intercom system as shown in
Figure 4.

To Radio Microphone “IN” Jack

To Radio Receiver “OUT” Jack

Mute Switch

Cell Phone Jack

Auxilary Jack

Stereo/Mono Switch

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 to the aircraft radio.

Cellphone/Audio Interface

The Echelon 25XT includes a unique amplified interface allowing for the
connection of a cellular telephone and an audio input simultaneously. This
configuration allows the user to set up before take-off and eliminates the
need to re-configure cords and equipment when operating the aircraft.

The other unique feature of this interface is the ability to obtain power
from the aircraft’s possessive communications system. This feature
results in increased battery life for the ANR system while maint aining the
benefits of an amplified interface. By amplifying the inputs, the Echelon
25XT allows the user to adjust volume level at the headset contributing to
the ability to not need re-configuring while in flight.

The Telex Echelon 25XT cell phone/audio interface has been designed to
function with the widest array of cellular telephones and portable audio
devices. There are cell phones and audio devices on the market not
designed to industry physical and electrical standards. These devices are
not guaranteed to function properly with the Echelon 25XT headset.

Please see the Telex web site for additional information.
www.telex.com/aircraf t

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