Tele Columbus DH3200, DH3000 Operating Instructions Manual

Operating Instructions

Telex

®

Dispatch Headset DH3200 (Shown)

DH3000

General Description

The Telex DH3000 Series Headset is designed for use in dispatch
applications with low noise levels. Ambient noise levels may be
considered harmful when exposed to for long periods of time. In addition,
these ambient noise levels require users to increase communications
volume level for clear understandable communications.

The Telex DH3000 Series Headset is ideally suited to this environment.
Soft, pliable cushions provide passive attenuation of unwanted
background noise. The advanced active noise reduction system removes
even more noise in the communications frequency range. This
combination gives the Telex DH3000 Series Headset a unique
improvement in communications clarity and intelligibility. With ambient
noise reduced, communications levels can also be reduced, providing
less fatigue and an overall improvement in comfort.

Complimenting these noise reduction features is a durable, lightweight
design with adjustable sliders increasing long-term fit and comfort. A
boom mounted microphone utilizes an electret noise-canceling element
for improved noise rejection. Extended response drivers improve sound
reproduction. The result is a comfortable, lightweight, headset that
provides the ultimate in clear, underst andable communications with no
batteries or complicated controls to get in the way .

The DH3200 is a dual-sided headset while the DH3000 is equipped with a
single earphone accompanied by a comfortable temple pad on the
opposite end on the headband.

This device complies with part 15 of the FCC
Rules, Operation is subject to the following two
conditions: (1) This device may not cause harm­ful interference, and (2) this device must accept
any interference received, including interference
that may cause undesired operation.

Page 1

Page 2

Flexible Boom Permits

Precise Mic Placement

Earcups Rotate

to Conform to

Wearer

Boom Rotates Overhead for

Mic Placement on Either

Side of Head

Figure 1

DH3200 Reference Vie w

(Dual-Sided Model Shown)

Noise Canceling

Electret Microphone

Sliders Adjust to

Any Size Head

Note: See Page 7 for Available Replacement Parts

Replaceable

Ear Cushions

Page 3

Design Features (See Figure 1)

Fit and Comfort

An adjustable headband gives the wearer two inches (51mm) of up and down
earphone adjustment per side, while the gimbal mounting improves the
headset’s side-to-side comfort.

Boom Microphone

The DH3000 Series Headset features a miniature, amplified, noise canceling
electret microphone that provides superior ambient noise rejection. The
microphone is mounted on a flexible gooseneck boom that permits precise
microphone placement. The boom rotates 320° to allow the microphone to
be worn on either side of the head. For best results, the microphone should
be placed as close to the mouth as possible. The microphone includes a
replaceable windscreen to minimize popping, hissing, and breathing sounds
when speaking.

Controls

The DH3000 Series Headset 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. Shielded wire throughout the headset
protects against RFI (Radio Frequency Interference) and EMI (Electro
Magnetic Interference).