The PMLN5277 Behind the Head Heavy Duty
Headset is intended for high noise
English
envir
onments, to provide privacy and noise
isolation.
The headset consists of the following parts:
•Flexible Noise-Canceling boom
microp
Ear cup Push-To-Talk button
•
hone
•Behind the Head support band
•Cloth strap over the head for additional
port
sup
•
Comfort Ear Seal with 24dB Noise
Reduction Rating (NRR)
Push-To-Talk (PTT) / Voice Operated
•
ansmission (VOX) Switch
Tr
Behind the Head Support band
Over the Head Strap
Ear Seal &
Cloth Covers
Headset Windscreen
Noise Canceling Microphone
Figure 1.Behind the Head Model
VOX & PTT Switch
Ear cup
Push-To-Talk
Button
Cable
Mic O-ring
Flexible Bo o m Assembly
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PUSH-TO-TALK (PTT) OPERATION:
1. Always switch the radio OFF before
connecting the headset.
2. Attach the audio connector to the radio
English
taking car
screw.
Note: Once th
radio speaker and the radio microphone
are both disabled. The user m ust spea k
into the headset microphone an d use
the headset speaker to listen to
incoming calls.
3. For Push-To-Talk operation, place the
PTT/VO
Switch the radio ON. Care should be
taken not to set the volume level too
loud.
e not to over tighten the fixing
e head
X switc
set has been inst alled the
h in the PTT mode.
4. The flexible boom mounted Noise
Canceling
micropho
ne 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.
p Push-T o-T alk button
5. Press the Ear
cu
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
n
tra
7. Always switch the radio OF
smissions.
F before
disconnecting the headset.
VOICE OPERATED TRANSMISSION (VOX)
PERA
O
1. Always switch the radio OFF befor
TION:
connecting the
e
headset.
2. Attach the audio connector to the radio,
taking car
e not to over tighten the fixing
English
screw.
Note: Once th e head
set has been inst alled the
radio speaker and the radio microphone
are both disabled. The user m ust spea k
into the headset microphone an d use
the headset speaker to listen to
incoming calls.
3. For VOX operation, place the PTT/VOX
swit
rad
ch in the VOX mode. Switch the
io ON. Care should be taken not to
set the volume level too loud.
4. The flexible boom mounted Noise
Canceling
positioned approximately 1.2 cm to 2.0
cm (½ inch to ¾ inch) from the user’s
micropho
3
ne should be
Page 6
English
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. To transmit, speak clearly into the
micr
ophone. T
he transmitter will remain
keyed for a short time after speaking.
REMOVING THE HEAVY DUTY HEADSET
o off before removing the
1. Turn the rad
i
heavy duty headset from the radio
accessory connector.
2. Remember to reattach the radio
accessory connector seal to the side
the r
adio when an accessory is not in
of
use.
ACOUSTIC SAFETY
Exposure to loud noises from any source for
extended per
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
fect.
ef
iods of time may temporarily or
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To protect your hearing :
•Use the lowest volume neccessary to do
your
job.
•Increase the volume only if you are in noisy
English
surr
oundings.
•Reduce the volume before connecting
headset or earpiece
.
•Limit the amount of time you use headsets
or earpieces at high volu
me.
•When using the radio without a headset or
earpiece, do not pl
ace the radio’s speaker
directly against your ear.
•If you experience hearing discomfort, ringing
in your ears, or speeches that are muffled, you should stop listening to your radio
through you
r headset or earpiece, and
have your hearing checked by your doctor.
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REPLACEMENT PARTS
The replacement parts shown in Table 1 are
avai
lable for the PMLN5277 Heavy Duty
Headset.
Please contact your local Motorola
English
Represent
IMPORTANT NOTE:
The Heavy Duty Headset is not field repairable.
ative or Dealer for details.
Table 1. Replacement Parts
DescriptionPart Number
Foam Ear Sea l75012068001
Cloth Covers 15012094001
Over the Head Strap4204004K01
Mic O-Ring6775998M01
Headset Wind screen3578010A01
Eyeglass Pad7575999M01