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Sony WH-RF400 Operating Instructions Manual page 5

Wireless stereo headphone system

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If you cannot receive a clear audio signal
Noise Reduction process
First change the radio frequency with
the
CHANNEL selector switch on the
transmitter,
then briefly press
the AUTO TUNING button
on the headphones.
The transmitter compresses the audio signal and converts it to RF signal. The
headphones convert
the received
RF signal to an audio signal and decompresses
it.
This
process reduces
noise picked
up during transmission
.
CHANNEL
DCIN12V:::
l
~
~
~
@
~
..
~
®
+\
~---1~
1
G)
The transmitter compresses the audio signals dynamic
range,
then converts it to RF
signal.
®
Noise may occur due to long distance transmission, etc.
®
The headphones convert the RF signal to an audio signal.
©
Noise may occur during conversion
.
Tips for charging
Charge supplied battery first
The supplied rechargeable nickel -metal hydride battery is
not charged from the first time you use
it.
Be sure to
charge them before
use.
About auto charge function
Placing the headphones on the transmitter automatically
turns
them
off,
then charging
starts.
This eliminates the
need for turning on/off every time you wear and take off
the
headphones.
If CHARGE/RED indicator does not
light up red
- Check if the right and left
headphones
are
rested
on
the
transmitter
correctly.
Take off the headphones and place
them on the transmitter again so that the
headphones'
contact points meet the transmitter's contact pins.
- Charging may not be completed
if
the transmitter's
contact pin and
headphones'
contact point are dusty.
Wipe
them with a cotton
bud,
etc.
Charging and usage time
Approx. charging time
Maximum usage time
1
l
7 hours
2 l
20 hours
3
l
1) at 1
kHz,
0.1 mW+ 0.1 mW output
2)
hours
required to fully charge an empty battery
3) Time may
vary,
depending on the temperature or
conditions
of
use.
To recharge supplied battery after
use
Place
the headphones on the transmitter after
use.
The
CHARGE/RED indicator
lights
up
red
,
then charging
starts.
When charging is complete, there is no need to remove
the headphones from the transmitter.
Remaining battery
To
check the remaining battery charge of the
headphones,
turn on the POWER switch and check the
POWER
indicator.
The battery is still serviceable when the indicator
lights up
green.
Charge the headphones if the POWER indicator turns
off,
dims,
flashes, or
the
sound becomes distorted or noisy.
Notes
-
The battery capacity may decrease if the
headphones
are turned on and placed on the transmitter with the
AC
adaptor disconnected
.
- The transmitter automatically turns off while charging
the headphones.
-
This
system is designed to charge only the supplied
rechargeable battery
BP-HPB00-11
for
safety.
Note
that
other types of rechargeable battery cannot be charged
with this
system.
- If dry batteries are installed, they cannot be charged
.
- Do not attempt to use the supplied rechargeable battery
BP-HPB00
-11 for other
components.
It is for use
with
this
system only.
- Charge in an environmental temperature of between
5 •c and 35 •c (between 41
°F
and 95 °F).
- When the battery life
reduces
to half, this may be the
end of battery
lifetime.
The supplied rechargeable
battery
BP-HPB00-11
is not commercially available. You
can order the battery from the store where you
purchased this system
,
or at your nearest Sony dealer.
-
Do
not touch the contact pins of the
transmitter.
If the
contact pins become dirty, charging may not be
possible.
-
Charging may not be completed if
the
transmitter's
contact pins and
headphones'
contact points are dusty.
Wipe them with a cotton bud
,
etc.
Using the headphones
with separately-sold dry
batteries
Commercially available (LR03 (size
AAA)) dry batteries
can
also be used to power the
headphones.
Install
two
batteries in
the
same manner as described in step 1 of
"How
to
use."
If you attempt to charge the headphones with dry
batteries
installed,
the CHARGE/RED indicator
lights
up
red
for 15
seconds,
then turns off. The battery charge
function is not
activated.
®
Decompression of the audio signals dynamic range
reduces
the noise
level
and
improves the S/N (signal -to-noise)
ratio.
Battery life
Battery
Approx. usage time'l
Sony alkaline battery LR03
24
hours'!
(size AAA)
1) at 1
kHz,
0.1 mW+ 0.1 mW output
2) Time may
vary,
depending on the temperature or
conditions of
use.
Note
Do not carry a dry battery together with coins or other
metallic
objects.
It can generate heat
if
the positive and
negative terminals of the battery are accidentally come
into contact with metallic
objects.
Tips for connection
-
When you connect the stereo mini cable (stereo mini
jack) directly to an earphone jack (monaural mini jack),
the audio signal may not be output through the
right
channel.
Tips for volume setting
-
If
you connect the transmitter to the headphone jack of
the A/V component, set the volume of the A/V
component as high as possible but not so high that the
audio signal becomes distorted.
- When watching
videos,
be careful not to raise the
volume too high in quiet scenes. You may hurt your
ears
when a loud scene is played.
Tips for sound effect
Slide the switch to select the desired sound
effect,
OFF or
VOICE.
(l.~.---(~
-
1 ,
- -
Position
of
switch
VOICE
OFF
Sound
effect and suitable sound
source
-
The
volume of the
headphones
may
vary,
depending on
the input signal and the setting of the EFFECT switch.
-
The sound effect may not be obtained depending on
the
input sound
sources.
Tips for better reception
Receiving performance
This
system
utilizes very
high frequency signals in the 900
MHz band so the receiving performance may deteriorate
due to the
surroundings.
The following examples
illustrate
conditions that may reduce the reception range or cause
interference.
- Inside a building with walls containing steel beams
-
An area with many steel file
cabinets,
etc.
-
An area with many electrical appliances capable of
generating electromagnetic fields
-
The transmitter is placed on a metal
instrument.
- An area facing a roadway
-
Noise or interfering signals exist in
the
surroundings due
to radio
transceivers
in
trucks,
etc.
- Noise or
interfering
signals exist in the surroundings
owing to
wireless
communication systems
installed
along
roadways.
Effective area of the transmitter
The
optimum distance is up to approximately 45 m (150 ft)
without the system picking up some
interference.
However,
the
distance may vary depending on the
surroundings and
environment.
-
If
the system picks up some
noise
within the above
mentioned
distance,
reduce the distance between the
transmitter and the headphones, or select another
channel.
- When you use the headphones inside the effective area
of the transmitter, the transmitter can be
placed
in any
direction from the
listener.
- Even within the signal reception
area,
there are some
spots (dead spots) where the RF signal cannot be
received. This characteristic is inherent to RF
signals,
and
does not indicate malfunction. By slightly moving the
transmitter,
location
of the dead spot can be changed.
Replacing the earpads
The
earpads are
replaceable.
If
the earpads become dirty
or worn
out,
replace them as illustrated below.
The
earpads are not commercially available. You can order
replacements from the store where you purchased this
system
,
or at your nearest Sony
dealer.
Remove the old earpad by pulling it out of the groove
on the
housing
.
2
Fit the
new
earpad in the groove of the housing.
Make sure the earpad is set to the vertical
position.
Precautions
- When this system is not to be used for a long period of
time,
disconnect the AC adaptor from the AC outlet
holding the plug, and remove the
battery
from the
headphones to avoid damage caused by battery
leakage and subsequent corrosion
.
- Do
not leave
this system in a location subject to direct
sunlight, heat or
moisture.
- You may hear some noise when you disconnect the
AC
adaptor
from
the transmitter before taking off the
headphones.
Avoid ~sing headphones at high
volume. Hearing
experts
advise against continuous, loud and extended
play.
If
you
experience a ringing in your ears,
lower
the volume or
discontinue use.
Caring for others
Keep the volume at a moderate level.
This will
allow
you
to
hear
outside sounds and to
be
considerate to the
people around you.
If you
have
any questions or problems concerning
the
system that are not covered in this
manual,
please consult
your nearest Sony
dealer.
Be sure to bring
the headphones
and the transmitter to
the Sony dealer
when
requiring
repair
work.
Troubleshooting
If you
run
into any problems using
this
system,
use the
following
checklist.
Should any problem
persist,
consult
your nearest Sony dealer.
No sound/Low sound
- Check
the
connection of
the
A/V component or the AC
adaptor.
- Check that the A/V component is
turned
on.
-
If
you connect the transmitter to
an A/V
component
using
the
headphone
jack, raise
the volume level
on the
connected A/V component within
the
range
where the
sound
is not
distorted.
- Change the radio frequency with the
CHANNEL
selector
on
the transmitter, then
change
the radio
frequency to
that of the
transmitter with
the
AUTO
TUNING button on
the
headphones.
-
Use the
headphones near
the
transmitter,
or change the
position of
the
transmitter.
-
Charge
the
supplied
rechargeable battery,
or
replace
dry
batteries with new ones.
If
the
POWER indicator
is still
off after charging, take the headphones to a Sony
dealer.
- Rai se the headphone
volume.
The sound cuts off
-
The
transmitter
turns off if
no signal or
low
signal is
input
for 4
minutes.
If
you connect
the transmitter
to an
A/V component using
the headphone jack, raise the
volume level on the connected
A/V
component
within
the range
where the sound
is
not
distorted.
Distorted or intermittent sound
(sometimes with noise)
-
Use the headphones
near the
transmitter,
or change the
position of
the transmitter.
-
Do
not
place the
transmitter on a metallic
table.
-
If you
connect the transmitter to an A/V component
using
the
headphone
jack,
lower the volume
level
on
the
connected A/V component within the range where
the
sound
is
not distorted.
-
Change the radio frequency with the CHANNEL selector
on the
transmitter,
then change the radio frequency to
that of
the
transmitter with the AUTO
TUNING
button on
the
headphones.
-
Charge the supplied rechargeable
battery,
or replace dry
batteries with
new
ones. If
the POWER
indicator is still
off after charging
,
take the
headphones
to a Sony
dealer.
Loud background noise
-
If
you connect the transmitter to an
A/
V
component
using the headphone jack, raise the volume
level
on the
connected A/V component within the range where the
sound is not distorted.
- Charge the supplied
rechargeable
battery,
or replace dry
batteries with new
ones.
If the POWER indicator is still
off after charging
,
take the headphones to a Sony
dealer.
- Do not
place
the transmitter on a metallic
table.
-
Use the headphones near the transmitter.
The POWER/GREEN indicator flashes
green
-
No signal or
low
signal
is input.
Start playback of the A/V
component,
or raise the volume of the connected
A/
V
component within the range wh~re the sound is
not
distorted, otherwise the transmitter will turn
off.
If no
signal or
low
signal
is input
for about 4
minutes, the
transmitter turns off
automatically.
Battery cannot be charged/
CHARGE/RED indicator flashes red,
or does not light up red
-
Check that the
right/left
of the headphones and
transmitter
correspond,
and put the headphones on the
transmitter
correctly.
-
Install
the supplied
rechargeable
nickel-metal hydride
battery.
Dry batteries and rechargeable batteries other
than
the
supplied cannot be charged.
-
If
the CHARGE/RED
indicator
does not
light
up
red
even
though you put the headphones on the transmitter and
wait
for a
while,
it
may be the end of battery lifetime.
You can order
the
supplied
rechargeable
battery
BP-HPB00-11 from
the
store where you purchased this
system, or at your nearest Sony dealer.
- Charging may not be completed if the transmitter's
contact pin and headphones' contact point are du
sty.
Wipe them with
a cotton bud
,
etc.
Short usage time (the supplied
rechargeable battery)
- Clean the+ and - terminal of the supplied rechargeable
battery and the charging terminal of
transmitter/
headphone
with a dry cloth
.
-
Recharge the supplied rechargeable battery after the
fully discharged.
Specifications
Audio inputs
Stereo
mini
jack
Power
requirements
Dimensions
Mass
DC
12
V
(from the supplied
AC
adaptor)
Approx. 130
mm
x
273
mm
x
160 mm
(5
1
/
a
x
10
¼
x 6
3
/a
in) (w/h/d)
Approx.
265 g (10
~
oz)
Rated
power consumption
2.0W
Operating temperature
c to 35°c (41
°F
to 95°F)
Wireless stereo headphones
(WH-RF400R)
Frequency response
10 Hz
-
22,000
Hz
Power source
Supplied rechargeable nickel-metal
hydride
battery
BP-HPB00
-11
,
or
commercially available (LR03 (size
AAA))
dry batteries
Mass
Approx.
275 g (10 oz)
Operating temperature
s•c
to
35°C (41 °F to 95°F)
Included items
RF
stereo
transmitter TMR-RF400
Wireless stereo headphones
WH-RF400R
AC
adaptor (12 V) (1)
Rechargeable nickel-metal hydride
Battery
BP-HPB00-11
(1)
Stereo mini cable (stereo
mini
plug),
1.5 m
(39
3
/
a
in)
(1)
Plug
adaptor (stereo
mini
plug-+ phono plugs) (1)
Design
and specifications are subject to change
without
notice.

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