Motorola PMLN6540 User manual
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FOREWORD
RF Energy Exposure and Product Safety
Guide for Portable Two-Way Radios
ATTENTION!
Before using this product, read the RF Energy
Exposure and Product Safety Guide that ships with
the radio which contains instructions for safe usage
and RF energy awareness and control for
compliance with applicable standards and
regulation.
ACOUSTIC SAFETY
Exposure to loud noises from any source for
extended periods of time may temporarily or
permanently affect your hearing. The louder
the radio’s volume, the less time is required
before your hearing can be affected. Hearing
damage from loud noises is sometimes
undetectable at first and can have a
cumulative effect.
To protect your hearing:
• Use the lowest volume necessary to do
your job.
• Increase the volume only if you are in noisy
surroundings.
• Reduce the volume before connecting
headset or earpiece.
• Limit the amount of time you use headsets
or earpieces at high volume.
• When using the radio without a headset or
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earpiece, do not place the radio’s speaker
directly against your ear.
DESCRIPTION
The PMLN6540 Behind the Head Heavy Duty
Headset is intended for high noise
environments, to provide privacy and noise
isolation.
The headset consists of the following parts:
• Flexible Noise-Canceling boom
microphone
• Ear cup Push-To-Talk button
• Behind the Head support band
• Cloth strap over the head for additional
support
• Comfort Ear Seal with 24dB Noise
Reduction Rating (NRR)
• Push-To-Talk (PTT) / Voice Operated
Transmission (VOX) Switch
VOX & PTT Switch
Over the Head Strap
Behind the Head Support band
Ear Seal &
Cloth Covers
Ear cup
Push-To-Talk
Button
Headset Windscreen
Mic O-ring
Noise Canceling Microphone
Flexible Boom Assembly
Cable
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Figure 1.Behind the Head Model
PUSH-TO-TALK (PTT) OPERATION
1. Always switch the radio OFF before
connecting the headset.
2. Attach the audio connector to the radio.
Note: Once the headset has been installed the
radio speaker and the radio microphone
are both disabled. The user must speak
into the headset microphone and use
the headset speaker to listen to
incoming calls.
3. For Push-To-Talk operation, place the
PTT/VOX switch in the PTT mode.
Switch the radio ON. Care should be
taken not to set the volume level too
loud.
4. The flexible boom mounted Noise
Canceling microphone should be
positioned approximately 1.2 cm to 2.0
cm (½ inch to ¾ inch) from the user’s
lips. Adjust the flex boom assembly to
this position. Do not twist the Noise
canceling module with windscreen,
either clockwise or counterclockwise to
avoid poor noise cancellation
performance.
5. Press the Ear cup Push-To-Talk button
located at the top of the left ear cup and
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speak into the headset microphone to
check that the two-way communication
is working, the radio-in-transmission light
(LED) will be illuminated.
6. Release Push-To-Talk button to receive
transmissions.
7. Always switch the radio OFF before
disconnecting the headset.
VOICE OPERATED TRANSMISSION
(VOX) OPERATION
1. Always switch the radio OFF before
connecting the headset.
2. Attach the audio connector to the radio.
Note: Once the headset has been installed the
radio speaker and the radio microphone
are both disabled. The user must speak
into the headset microphone and use
the headset speaker to listen to
incoming calls.
3. For VOX operation, place the PTT/VOX
switch in the VOX mode. Switch the
radio ON. Care should be taken not to
set the volume level too loud.
4. The flexible boom mounted Noise
Canceling microphone should be
positioned approximately 1.2 cm to 2.0
cm (½ inch to ¾ inch) from the user’s
lips. Adjust the flex boom assembly to
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this position. Do not twist the Noise
canceling module with windscreen,
either clockwise or counterclockwise to
avoid poor noise cancellation
performance.
5. To transmit, speak clearly into the
microphone. The transmitter will remain
keyed for a short time after speaking.
REMOVING THE HEAVY DUTY
HEADSET
1. Turn the radio off before removing the
heavy duty headset from the radio
accessory connector.
2. Remember to reattach the radio
accessory connector seal to the side of
the radio when an accessory is not in
use.
REPLACEMENT PARTS
The replacement parts shown in Table 1 are
available for the PMLN6540 Heavy Duty
Headset.
Please contact your local Motorola
Representative or Dealer for details.
IMPORTANT NOTE:
The Heavy Duty Headset is not field repairable.
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Figure 2.Digital Symbol Marking
Radios with this “Digital Symbol” are digital
capable radios and require the use of
Table 1. Replacement Parts
Description Part Number
Foam Ear Seal 75012068001
Cloth Covers 15012094001
Over the Head Strap 4204004K01
Mic O-Ring 6775998M01
Headset Windscreen 3578010A01
Eyeglass Pad 7575999M01
Digital Symbol
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accessories with the same “Digital Symbol”.
These accessories with the “Digital Symbol”
have been optimized for digital audio Transmit
and Receive. Use of non-approved
accessories may result in degradation of
audio quality.
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MOTOROLA, MOTO, MOTOROLA SOLUTIONS and the
Stylized M logo are trademarks or registered trademarks of
Motorola Trademark Holdings, LLC and are used under
license. All other trademarks are the property of their
respective owners.
© 2013 Motorola Solutions, Inc. All rights reserved.
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