Telex AIR3100L, AIR3100 User Manual

®

Te l e x

User Instructions

Air3100 Headset
Air3100L Headphone

Detented Sliders

Adjust to

Any Size Head

Tension

Adjust Knob

Unique
Design

Replaceable

Ear Cushions

Replaceable

Wide Head Pad

Earcups Pivot on

Two Planes to

Conform to Wearer

Replaceable

Ear Cushions

Noise Canceling

Electret Microphone

Patented Ball and Socket

Jointed Boom Rotates

Overhead for Mic

Placement on Either

Side of Head

Flexible Boom Permits
Precise Mic Placement

Figure 1

Air3100 Reference View

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
on the bottom of the ear than on the top. An added advantage of this
design is that the headset folds into an extremely compact shape for
storage. The Air3100 headset is approved for aircraft use under FAA
TSO’s C57a and C58a. The Air3100L headphone is approved for aircraft
use under FAA TSO’s C57a.

Design Features

(See Figure 1)

Comfortable foam-filled headband pad and ear cushions. The headband
pad evenly distributes the headset weight, with no pressure points, for
maximum wearer comfort. The ear cushions combine comfort and light
weight with excellent acoustic seal. An outer urethane layer ensures long
life. Gel-filled ear cushions are also available for this headset for users
who prefer this type. All cushions are field-replaceable.

Boom Microphone: The boom arm features a sealed ball-and-socket
joint and flexible boom for precise microphone placement on any head
size. The boom rotates overhead for microphone placement on either
side of the head. The microphone cartridge features a noise-canceling
electret element. The cartridge snaps on and off for easy replacement.
The microphone amplifier is in the microphone cartridge. It operates on
current supplied by the aircraft radio via the microphone jack. The
amplifier output level is adjustable through an opening in the microphone
assembly.

Cordage: The microphone cordage is protected inside the boom arm.
Shielded wire throughout the headset protects against RFI and EMI.
Strain-reliefs on all cords provide maximum durability.

Sound Attenuation Data: The following measurements for the Telex
Air3100 and AIR3100L Headsets were made according to the American
National Standard Institute (ANSI) S3.19-1974 by Paul Michael and
Associates. These laboratory-derived attenuation data are for comparison
purposes only, as the amount of protection afforded in field use is often
significantly lower depending upon how the headphones are fitted and
worn.

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Page 1

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

Boom Microphone Placement

1. Rotate the entire boom overhead to
wear the microphone on either the
right or left side of the head.

2. For best noise canceling, position the
microphone as close to the mouth as
possible and speak in a normal voice.
(See figure 3)

3. When the microphone is not in use, it
may be swung slightly away from the
mouth.

Connections

Figure 3

Page 2