Sennheiser EPOS SD Series User manual

UserGuide
Comfort
call
DECT
SD Series
Instruction Manual
SD Series - User Guide | 1
Contents “User Guide”
Contents “User Guide”
Important safety information ....................................................................... 2
Scope of delivery and overview of the SD series ........................................ 4
Base stations with components ................................................................... 4
Headsets with components .......................................................................... 5
Product overview of the headsets ................................................................ 6
Overview of the SD Office – HS headset .................................................... 6
Overview of the SD Pro1/Pro2 – HS headsets .......................................... 7
Overview of the buttons ............................................................................... 8
Overview of the LEDs ..................................................................................... 9
Individually adjusting the headset ............................................................11
Putting the headset on and adjusting it ..................................................11
Labeling the headset with a name plate .................................................14
Testing the headset system and the sound quality ................................15
Adjusting the headset system using the DIP switches .........................15
Pairing the headset and the base station ...............................................17
Adjusting the audio signal by means of the dial tone ..........................18
Adjusting the volume ..................................................................................19
Adjusting the automatic audio transmission “Auto Audio” ................19
Making calls using the headset .................................................................. 20
Adjusting the volume ..................................................................................20
Muting the headset’s microphone ............................................................21
If you leave the DECT range ........................................................................22
Switching between Phone and PC mode ..................................................22
Calling via the fixed line phone using the headset ................................23
Calling via the computer using the headset ............................................25
Holding a conference call ............................................................................27
Charging the headset and storing the headset system .......................... 29
Charging the headset ...................................................................................29
Switching the headset system off during extended non-use .............31
Sharing a workplace .....................................................................................32
Cleaning and maintaining the headset system ........................................ 34
Replacing the ear pads ................................................................................35
Replacing the headset’s rechargeable battery .......................................36
If a problem occurs ....................................................................................... 39
Specifications ................................................................................................ 40
Manufacturer Declarations .......................................................................... 42

Important safety information
2 | SD Series - User Guide
Important safety information
왘Please read this instruction manual carefully and completely before
using the product.
왘Always include this instruction manual when passing the product on to
third parties.
왘Do not use an obviously defective product.
Preventing damage to health and accidents
왘Do not listen at high volume levels for long periods of time to prevent
hearing damage.
왘Always maintain a distance of at least 3.94” (10 cm) between the ear
cups and the cardiac pacemaker or implanted defibrillator since the
product generates permanent magnetic fields.
왘Keep the product, accessories and packaging parts out of reach of chil-
dren and pets to prevent accidents and choking hazards.
왘Do not use the product in situations which require special attention.
Preventing damage to the product and malfunctions
왘Always keep the product dry and do not expose it to extreme tempera-
tures (hairdryer, heater, extended exposure to sunlight, etc.) to avoid
corrosion or deformation.
왘Only use attachments/accessories supplied or recommended by Senn-
heiser.
왘Only clean the product with a soft, dry cloth.
왘Unplug the power supply unit from the wall socket to completely dis-
connect the product from the mains power supply.
왘Do not short-circuit the contacts of the
product. Make sure that no
metal objects (e.g. paper clips, hair pins, earrings) come into contact
with the interfaces and contacts.
왘Only use the base station for charging SD series headsets.
Intended use/Liability
The headset system can be used for calling and – together with a computer
(VoIP) and/or a telephone – for audio input/output and is intended for
professional office or call center use.
It is considered improper use when this product is used for any application
not named in this instruction manual.
Sennheiser does not accept liability for damage arising from abuse or
misuse of this product and its attachments/accessories. The risk is to be
borne by the user.
Sennheiser is not liable for damages to USB devices that are not consistent
with the USB specifications.
Sennheiser is not liable for damages resulting from the loss of connection
due to flat or overaged rechargeable batteries or exceeding the DECT
transmission range.
The US base stations operate on special transmission frequencies whose
use is not authorized outside the United States.
왘Do not use the SD BS US base station outside the United States.
Important safety information
SD Series - User Guide | 3
Safety instructions for Lithium-Polymer rechargeable batteries
In extreme cases, abuse or misuse of rechargeable batteries can lead to:
WARNING
•explosion,
• fire development,
• heat generation or
•smoke/gasdevelopment.
Switch rechargeable
battery-powered
products off after use.
Do not heat above 70°C/158°F,
e.g. do not expose to sunlight
or throw into a fire.
Only charge
rechargeable
batteries at ambient
temperatures
between 10°C/50°F
and 40°C/104°F.
When not using rechargeable
batteries for extended periods
of time, charge them regularly
(about every 3 months).
Dispose of defective
products with built-in
rechargeable batteries
at special collection
points or return them to
your specialist dealer.
Only use rechargeable batteries
recommended by Sennheiser
and the appropriate chargers.

Scope of delivery and overview of the SD series
4 | SD Series - User Guide
Scope of delivery and overview of the
SD series
The SD series allows you to combine base stations (BS) and headsets (HS)
to meet your needs. The listed headsets and base stations are compatible
with each other. The SD series base stations marked with ML in their name
are optimized for MicrosoftLync™.
The scope of delivery includes – depending on the product purchased – a
base station and/or a headset with corresponding components.
Base stations with components
SD BS for fixed line phone and computer
SD BS ML for fixed line phone and computer, optimized for
Microsoft Lync
SD BS USB for computer
SD BS USB ML for computer, optimized for Microsoft Lync
SD BS Phone for fixed line phone
Safety
Guide
Quick
Guide
Manual
EU/UK/US/AU Phone
USB
SD BS USB
SD BS USB ML
SD BS Phone
SD BS
SD BS ML
Phone
USB
Scope of delivery and overview of the SD series
SD Series - User Guide | 5
Headsets with components
SD Office – HS monaural, with different wearing styles
SD Pro1 – HS monaural, with headband
SD Pro2 – HS binaural, with headband
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS
Quick
Guide

Product overview of the headsets
6 | SD Series - User Guide
Product overview of the headsets
Overview of the SD Office – HS headset
5
C
A
B
6
8
9
7
3
4
2
0
1
1Headband
2Charging contacts
3Headset holder
4Ear pad
5Microphone
6Name plate
7Headset LED
8Link button
9Audio button
0Ear hook
ACharging contacts
BBattery compartment
CEar piece
Product overview of the headsets
SD Series - User Guide | 7
Overview of the SD Pro1/Pro2 – HS headsets
SD Pro1 – HS
4
5
9
8
7
60
SD Pro2 – HS
2
4
3
3
5
1
2
1
1Windshield
2Microphone
3Battery compartment
4Ear pad
5Headband
6Name plate
7Headset LED
8Link button
9Audio button
0Charging contacts

Product overview of the headsets
8 | SD Series - User Guide
Overview of the buttons
Overview of the buttons of the base station
Overview of the buttons of the headset
Action Functions Page
왘Press the Phone button Selects the Phone mode 23
Establishes/disconnects the link
between headset and base station
17
Accepts/ends a call 23
왘Press the PC button Selects the PC mode 25
Establishes/disconnects the link
between headset and base station
17
Accepts/ends a call 25
Action Functions Page
왘Press the
Link button 8
Establishes/disconnects the link
between headset and base station
17
Accepts/ends a call 23/25
왘Press and hold the
Link button 8for
5seco
nds
Switches the headset on/off 31
왘Push the
Audio button 9
upwards/downwards
Adjusts the ring tone volume, the
volume of the acoustic signals or the
audio volume
20
왘Press the
Audio button 9
Mutes the microphone/unmutes the
microphone
21
왘Press and hold the
Link button 8and
the Audio button 9
for 5 seconds
Changes the direction of the volume
up/down function of the Audio
button
21
Special pairing mode 33
SD BS USB
SD BS USB ML SD BS Phone
SD BS
SD BS ML
SD Office – Headset SD Pro1/Pro2 – Headset




Product overview of the headsets
SD Series - User Guide | 9
Overview of the LEDs
Overview of the LEDs of the base station
The LED icons of the PC button and the Phone button are dependent
on the base station variant.
LED of the PC button Meaning
lights up PC mode
flashes Incoming PC call
LED of the Phone button Meaning
lights up Phone mode
flashes Incoming telephone call
Link LED Meaning
lights up blue Active link to the headset
lights up red No link to the headset
flashes red Headset is muted
is off Standby mode, headset is within the
range of the base station, but no audio
link
Charge status LED (white = lit) Meaning
LED segment 1 flashes Rechargeable battery
is almost flat
LED segments 1 – 4
are lit
Rechargeable battery
is charged

Product overview of the headsets
10 | SD Series - User Guide
Overview of the LEDs of the headset
Headset LED Meaning
lights up blue Headset is being charged in the base
station
flashes blue slowly Active link to base station
flashes 3 times red
repeatedly
Rechargeable battery is almost flat
is off Standby mode or headset is switched off
Headset’s rechargeable battery is fully
charged
flashes blue/red Special pairing mode/direction of the
volume up/down function of the
Audio button is being changed
Pairing of an additional headset with the
base station/conference call
SD Office – HS SD Pro1/Pro2 – HS
Individually adjusting the headset
SD Series - User Guide | 11
Individually adjusting the headset
Putting the headset on and adjusting it
Using the SD Office – HS with the ear hook
1Insert the ear hook into the ear hook slot.
2Pre-shape the ear hook by bending it slightly.
3Place the ear hook around your ear.
4Bend the flexible ear hook so that the headset sits comfortably and
securely on your ear.
1 2
3
4
Left Right

Individually adjusting the headset
12 | SD Series - User Guide
Using the SD Office – HS with the headband
1Remove the ear hook by carefully pulling it upwards.
2Replace the name plate with cheek spacer with the basic name plate.
This is necessary in order to be able to rotate the headset’s microphone
boom (see diagram 4).
3Attach the headset to the headset holder of the headband.
4Rotate the microphone boom and adjust the headset so that the ear
pad rests comfortably on your right or left ear.
1 2
3 4
Left
Right
Individually adjusting the headset
SD Series - User Guide | 13
Using the SD Pro1/Pro2 – HS
1Rotate the microphone boom.
2Bend the microphone boom so that the microphone is about 0.8”
(2 cm) from the corner of your mouth.
3SDPro1–HS: Adjust the headset so that the ear pad rests comfortably
on your right or left ear.
4SDPro2–HS: Adjust the headset so that the ear pads rest comfortably
on your ears.
SD Pro1 – HS SD Pro2 – HS
2-3 cm
RightLeft
1 2
3 4

Individually adjusting the headset
14 | SD Series - User Guide
Labeling the headset with a name plate
왘Change the lettering of the name plate.
DW Pro1 – HS
DW Pro2 – HS
DW Office – HS
2. TYPE
3. PRINT
4. CUT
1. OPEN ”Name Plate Maker“
WWW
www.sennheiser.com/
name-plate-maker
Instruction Manual
Testing the headset system and the sound quality
SD Series - User Guide | 15
Testing the headset system and the
sound quality
Adjusting the headset system using the DIP switches
1Press the Link button on the headset to disconnect an existing wireless
link between base station and headset.
The LEDs on the headset and on the base station go off.
2Use a pointed object (e.g. a ball pen) to set the DIP switches to the
desired position.
Configuring the handset lifter/hook switch – DIP switches 1 and 2
The DIP switches 1 and 2 are only assigned a function on the SD BS,
SD BS ML and SD BS Phone base stations.
1
2
1 2 3 4 5 6
DHSG
Handset Lifter
MSH
Short Range
Long Range
Auto Link ON
Auto Link OFF
Narrowband
Wideband
Limiter
Standard
Extra
Settings
Fast Link
Switch position Function
Manual operation
Lifts/hangs up the handset manually or using
the handset lifter (Sennheiser HSL 10).
Electronic hook switch (DHSG standard)
Call control via the headset system.
For faster link establishment, see Fast Link.
Electronic hook switch (MSH standard)
Call control via the headset system.
Fast Link for DHSG standard and HSL 10 handset
lifter
Recommended for frequent callers. Shorter battery
life. Fast link establishment without delay due to
hidden link to the base station.

Testing the headset system and the sound quality
16 | SD Series - User Guide
Adjusting the radio range – DIP switch 3
If many DECT systems are operated in a confined space, interference can
occur. In this case, you should change the radio range.
Automatically establishing the wireless link between headset and
base station (Auto Link) – DIP switch 4
Switching between wideband and narrowband audio transmission –
DIP switch 5
Limiting the volume – DIP switch 6
Switch position Function
Standard radio range
Reduced radio range
Use this setting in order to avoid interference with
other DECT systems
Range of approx. 10 m indoors
SD Office – HS
SD Pro1 – HS
SD Pro2 – HS
Auto Link
Switch position Function
Manual link establishment
When taking the headset out of the base station,
you have to manually establish the wireless link
between headset and base station.
Automatic link establishment – Auto Link
When taking the headset out of the base station,
a wireless link is automatically established between
headset and base station.
Switch position Function
Wideband audio transmission
Automatic frequency adjustment of wideband and
narrowband calls. Wideband audio transmission is
e.g. supported by Skype and gives high speech
quality.
Battery life: 8 hours
Narrowband audio transmission
Battery life: 12 hours
Switch position Function
Standard limitation
Limited volume (country specific)
•AUversion:
in compliance with Directive AS/ACIF G616:2006
• EU and US version:
in compliance with Directive 2003/10/EC
Testing the headset system and the sound quality
SD Series - User Guide | 17
Pairing the headset and the base station
Upon delivery, the headset and the base station are already paired. You
only have to pair the headset with the base station if you have purchased
the headset and base station separately or if you want to hold a confer-
ence call.
“easy pairing” – Pairing the headset and the base station
왘Place the headset into the magnetic holder of the base station.
The Headset LED alternately flashes red and blue. If pairing is suc-
cessful, the Headset LED flashes 3 times blue and then lights up contin-
uously, indicating that the base station and the headset are paired.
If the Headset LED flashes 3 times red and then goes off, start a new
pairing attempt by placing the headset again into the magnetic holder of
the base station.
Establishing a wireless link
왘Press the Link button on the headset or press the backlit button (either
PC or Phone ) on the base station. The link is established. The Link
LED on the base station lights up blue and the Headset LED flashes
blue slowly.
Disconnecting a wireless link
왘Press the Link button on the headset or press the backlit button (either
PC or Phone ) on the base station. The link is disconnected. The
Link LED on the base station and the Headset LED go off. The headset
is in standby mode.
If your telephone has a built-in electronic hook switch supporting
the MSH standard, you can only disconnect the wireless link between
headset and base station by placing the headset into the base
station.
3x

Testing the headset system and the sound quality
18 | SD Series - User Guide
Adjusting the audio signal by means of the dial tone
1Put on the headset and press the Phone button on the base station.
2Press the Link button on the headset. The Link LED on the base
station lights up blue.
3Lift the handset. You hear a dial tone.
4Set the ABC switch to the position A, Bor Cso that you can hear a clear
dial tone in the headset.
1 2
43
Testing the headset system and the sound quality
SD Series - User Guide | 19
Adjusting the volume
Adjusting the microphone volume of the call transmission
By default, the microphone volume control is set to position 4. This setting
is suitable for most telephones.
왘Make a call to someone who will help you find the correct sensitivity
setting for your microphone.
왘Turn the microphone volume control so that the other party can hear
you at a comfortable level.
Adjusting the microphone volume of the USB transmission
Some softphones adjust the microphone sensitivity automatically.
왘Activate this function in order to be able to optimally use the micro-
phone and, via your operating system, adjust the microphone sensi-
tivity so that the other party can hear you at a comfortable level (see
the Help function of your operating system).
Adjusting the automatic audio transmission “Auto Audio”
With the “Auto Audio” function activated and in the case of a USB connec-
tion, the audio signals – e.g. from WindowsMedia Playeror iTunes–
are automatically transmitted to the headset.
When you receive a call or when a connection to Skype™ is established, the
audio transmission stops and you hear for example the ring tone. The
“Auto Audio” function is activated by default.
Activating the “Auto Audio” function
왘Use a pointed object to press the Set button for approx. 5 seconds. The
Link LED rapidly flashes blue several times.
Deactivating the “Auto Audio” function:
왘Use a pointed object to press the Set button for approx. 5 seconds. The
Link LED rapidly flashes red several times.
5s

Making calls using the headset
20 | SD Series - User Guide
Making calls using the headset
Adjusting the volume
You can adjust the ring tone volume, the volume of the acoustic signals
and of the audio signal using the Audio button. With base stations con-
nected to a computer, you can also adjust the volume of the audio signal
by using the volume control of your operating system.
Adjusting the ring tone volume and the volume of the acoustic signals
왘Make sure that the headset is in standby mode (the Link LED on the
base station is off). If necessary, press the Link button on the headset.
왘To adjust the volume, move the Audio button as shown in the diagram.
When the minimum or maximum volume is reached, you hear a double
beep in the headset.
Adjusting the volume of the audio signal
You can adjust the volume of the audio signal by means of the dial tone or
during a call.
왘Make sure that a link is established between headset and base station
(the Link LED on the base station lights up blue). If necessary, press
the Link button on the headset.
왘To adjust the volume, move the Audio button as shown in the diagram.
When the minimum or maximum volume is reached, you hear a double
beep in the headset.
WARNING
Hearing damage due to high volumes!
Listening at high volume levels for long periods can lead to perma-
nent hearing defects.
왘Set the volume to a low level before putting on the headset.
왘Do not continuously expose yourself to high volumes.
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS
Making calls using the headset
SD Series - User Guide | 21
Changing the direction of the volume up/down function
왘On the Audio button, check which direction is assigned “volume down”.
왘Simultaneously press and hold the Link button and the Audio button
for 5 seconds.
The Headset LED alternately flashes blue/red.
왘Push the Audio button in the direction “volume down” until the
Headset LED goes off. The direction of the volume up/down function of
the Audio button is changed. The headset switches to standby mode.
Muting the headset’s microphone
왘Press the Audio button.
The microphone is muted. While the microphone is muted, the
Link LED on the base station flashes red.
Unmuting the headset’s microphone
왘Press the Audio button.
You hear a beep in the headset. The muting is canceled and the
Link LED on the base station lights up blue.
5 s 5 s
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS

Making calls using the headset
22 | SD Series - User Guide
If you leave the DECT range
In normal office buildings, the range between headset and base station is
up to 55 m. If, during a call, the audio quality deteriorates or the link breaks
down completely, you hear a descending sequence of beeps in the headset.
The Link LED on the base station lights up red.
왘Re-enter the DECT range of the base station within 60 seconds.
You hear a ring tone in the headset.
왘Press the Link button on the headset to resume the call.
If your softphone supports call control, the call will automatically be
ended 60 seconds after leaving the DECT range.
Switching between Phone and PC mode
왘Press the PC button or the Phone button on the base station to
select the desired mode.
The button pressed (PC or Phone ) is backlit in white, indicating the
selected mode.
55 m
Making calls using the headset
SD Series - User Guide | 23
Calling via the fixed line phone using the headset
If you want to use the headset to accept, make or end calls, you have to
establish a wireless link between headset and base station. You can choose
between manual and automatic link establishment (see “Auto Link” on
page 16):
Managing calls without using a call control functionality
Accepting a call: You hear the ring tone of the fixed line phone.
왘Press the Link button on the headset.
왘Lift the handset or press the “accept call” button on your fixed line
phone.
Making a call:
왘Press the Link button on the headset to establish a link between base
station and headset.
왘Lift the handset and dial the desired number.
The phone connection is established.
Ending a call:
왘Hang up the handset or press the “end call” button on your fixed line
phone.
Switch position Function
Manual link establishment
When taking the headset out of the base station,
you have to manually establish the wireless link
between headset and base station.
Automatic link establishment – Auto Link
When taking the headset out of the base station,
a wireless link is automatically established between
headset and base station.

Making calls using the headset
24 | SD Series - User Guide
Managing calls using a call control functionality (EHS, HSL 10)
Accepting a call: You hear a ring tone in the headset.
왘Press the Link button on the headset to accept the call.
The handset lifter/electronic hook switch lifts the handset.
Making a call:
왘Dial the desired number.
왘Press the Link button on the headset to establish a link between base
station and headset.
The phone connection is established automatically.
Ending a call:
왘Press the Link button. If the other party hangs up, your telephone and
your headset become automatically ready to receive the next call.
Frequent callers who use an electronic hook switch with DHSG capability
are recommended to activate the “Fast Link” function for faster link estab-
lishment (see page 15):
Switching a call between headset and fixed line phone
왘Press the Link button on the headset to switch between headset and
handset of the fixed line phone during an ongoing call.
Switch position Function
Fast Link (only when DHSG standard is used)
Recommended for frequent callers. Shorter battery
life. Fast link establishment without delay due to
hidden link to the base station.
In case of a fixed line phone with a handset lifter/an electronic hook
switch, this switching can only be done on the fixed line phone.
Making calls using the headset
SD Series - User Guide | 25
Calling via the computer using the headset
If you want to use the headset to accept, make or end calls, you have to
establish a wireless link between headset and base station. You can choose
between manual and automatic link establishment (see “Auto Link” on
page 16):
Managing calls without using the “HeadSetup” call control functionality
Accepting a call: The softphone signals that you are receiving a call. You
hear a ring tone in the headset.
왘Click on “Accept call” on your softphone.
Making a call:
왘Press the Link button on the headset to establish a link between base
station and headset. If the “Auto Audio” function is activated, this step
is not necessary (see page 19).
왘Start the call using your softphone.
Ending a call:
왘End the call using your softphone.
Switch position Function
Manual link establishment
When taking the headset out of the base station,
you have to manually establish the wireless link
between headset and base station.
Automatic link establishment – Auto Link
When taking the headset out of the base station,
a wireless link is automatically established between
headset and base station.

Making calls using the headset
26 | SD Series - User Guide
Managing calls using the “HeadSetup” call control functionality
Accepting a call: The softphone signals that you are receiving a call. You
hear a ring tone in the headset.
왘Press the Link button on the headset to accept the call.
Making a call:
왘Start the call using your softphone, the audio signal is automatically
transmitted to the headset.
Ending a call:
왘Press the Link button. If the other party hangs up, your softphone and
your headset become automatically ready to receive the next call.
Making calls using the headset
SD Series - User Guide | 27
Holding a conference call
The headset system allows you to make a conference call with up to
4 SD series headsets. The first headset paired (master) is used control
the call establishment and end of conversation.
Pairing the MASTER headset with the base station
The Link LED on the base station is off (headset is disconnected) or
lights up red (no headset paired).
왘Place the master headset into the base station.
The Headset LED alternately flashes blue/red until a link to the base
station is established. The Headset LED flashes blue 3 times.
왘Take the headset out of the base station and press the Link button to
connect the headset with the base station.
The Link LED on the base station lights up blue.
MASTER
GUEST 1
GUEST 3
GUEST 2
MASTER
New
3x
or
SD Office – HS SD Pro1 – HS
SD Pro2 – HS

Making calls using the headset
28 | SD Series - User Guide
Adding a GUEST headset to a conference call
왘Press and hold the Audio button while placing the guest headset into
the base station of the master headset.
The Headset LED alternately flashes blue/red until a link to the base
station is established. The Headset LED flashes blue 3 times.
왘Take the guest headset out of the base station. You hear a beep in the
master headset.
왘To add the guest headset to the conference call, press the Link button
on the master headset within 15 seconds.
왘Repeat this procedure to add additional guest headsets to the
conference call.
왘Call the other party.
The Link LED on the base station flashes blue.
Dropping a GUEST headset from the conference call
왘Press the Link button on the guest headset. The guest headset is
dropped from the conference call.
Ending a conference call
왘Place the master headset into the magnetic holder of the base station
to end the conference call and to drop the guest headsets from the
conference call.
Press & hold the mute button
& insert the headset
into the charging
cradle.
MASTER
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS
GUEST 1-3
or
Accept the
GUEST headset.
3x
3x on
“easy pairing”
To subsequently use the guest headset with other base stations,
place the guest headsets into the other base stations. The
Headset LED alternately flashes blue/red until a link is established.
Charging the headset and storing the headset system
SD Series - User Guide | 29
Charging the headset and storing the
headset system
Charging the headset
Always store the headset in the base station to ensure that it is fully
charged when needed. The intelligent battery charging technology pre-
vents over-charging.
왘Place the headset into the magnetic holder of the base station.
The Headset LED lights up blue and the rechargeable battery is being
charged. The Charge status LED on the base station indicates the
charge status:
Shortly before the rechargeable battery is about to run flat, only one LED
segment lights up weakly. The Headset LED flashes red and you hear three
beeps. You have several minutes of battery reserve. When the recharge-
able battery is flat, the headset switches off.
LED segment
(white = lit up)
Required
charging time
Corresponds to a talk time of
Wideband Narrowband
approx. 10 min. approx. 2 hrs approx. 3 hrs
approx. 20 min. approx. 4 hrs approx. 6 hrs
approx. 40 min. approx. 6 hrs approx. 9 hrs
approx. 60 min. approx. 8 hrs approx. 12 hrs
SD Pro2 – HSSD Office – HS SD Pro1 – HS
100 %75%25% 50%

Charging the headset and storing the headset system
30 | SD Series - User Guide
Charging the headset using the optional CH 10 headset charger
The CH 10 headset charger is an optional accessory available from your
Sennheiser partner. The CH 10 allows you to charge additional SD series
headsets, e.g. for sharing the same base station when working shifts.
왘Refer to the instruction manual of the CH 10 for more information.
If the headset is outside the range of the base station, it will switch
off after 30 minutes in order to conserve battery power.
SD Pro2 – HS
SD Office – HS
SD Pro1 – HS
Charging the headset and storing the headset system
SD Series - User Guide | 31
Switching the headset system off during extended
non-use
You can switch off the headset system (1) or the headset (2) when not
using the products for extended periods of time (e.g. when you are on
holiday).
Switching the headset system off
1Disconnect the base station from the mains power supply. The base
station switches off immediately, the headset switches off about
30 minutes later.
2Press and hold the Link button for 5 seconds to switch off the headset
immediately. The Headset LED flashes 3 times red, the headset is
switched off completely.
The Link LED on the base station lights up red after a short time, the
Charge status LED on the base station goes off.
Switching the headset system on and pairing the components
왘Plug the power supply unit into a wall socket. The base station is
switched on.
왘Place the headset into the magnetic holder of the base station. The
Headset LED flashes 3 times blue and then lights up blue. The base
station and the headset are paired.
P
C
DC IN
H
eadset
A
CC
PC
D
C
IN
H
e
ads
et
A
CC
5 s
5 s
3x
3x
SD Office – HS SD Pro1 – HS
SD Pro2 – HS
1
2 2

Sharing a workplace
32 | SD Series - User Guide
Sharing a workplace
The headsets and base stations of the SD series are compatible with each
other. If, for example, you share a workplace, you can use one base station
with different headsets. The last headset paired with the base station can
be used without more ado.
왘Place the headset to be used into the magnetic holder of the base
station.
The Headset LED alternately flashes blue/red until the headset is suc-
cessfully paired with the base station. The Headset LED flashes 3 times
blue and then goes off. You can now use the newly paired headset.
If pairing has failed, the Link LED on the base station lights up red or is
off. Repeat the procedure.
SD Pro2 – HS
SD Office – HS
SD Pro1 – HS
3x
Sharing a workplace
SD Series - User Guide | 33
Using the headset with a third party base station
(DECT-GAP telephone)
왘Place the headset at a maximum distance of 1 m from the third party
base station.
왘Simultaneously press and hold the headset’s Link button and
Audio button for 5 seconds.
The headset switches to a special pairing mode and the Headset LED
alternately flashes blue/red.
왘Set the third party base station to a special pairing mode (see the
instruction manual of the third party base station). The default code
for the headset is “0000”.
The headset pairs with the third party base station. If pairing is suc-
cessful, the Headset LED goes off.
If pairing is not successful within 60 seconds, the headset switches back to
standby mode.
Pairing the headset again with a SD series base station
왘Simultaneously press and hold the headset’s Link button and
Audio button for 5 seconds.
The headset switches to a special pairing mode and the Headset LED
alternately flashes blue/red.
왘Place the headset into the magnetic holder of the base station. The
Headset LED flashes 3 times blue and then lights up blue. The base
station and the headset are paired.
5 s 5 s
SD Pro1 – HS
SD Pro2 – HS
SD Office – HS

Cleaning and maintaining the headset system
34 | SD Series - User Guide
Cleaning and maintaining the
headset system
왘Before cleaning, disconnect the base station from the mains power
supply.
왘Only use a dry and soft cloth to clean the product.
왘Clean the charging contacts of the base station and the charging con-
tacts of the headset from time to time using e.g. a cotton swab.
CAUTION
Liquids can damage the electronics of the product!
Liquids entering the housing of the product can short-circuit the elec-
tronics.
왘Keep all liquids far away from the product.
왘Do not use any solvents or cleansing agents.
SD Office – HS SD Pro1 – HS
SD Pro2 – HS
Cleaning and maintaining the headset system
SD Series - User Guide | 35
Replacing the ear pads
For reasons of hygiene, you should replace the ear pads from time to time.
Spare ear pads are available from your Sennheiser partner.
SD Office – HS
1Carefully remove the old ear pad from the ear cup. Make sure that the
fastening ring of the old ear pad is also removed from the ear cup.
2Pull the collar Bof the ear pad over the notch Aof the headband.
3Turn the ear pad counter-clockwise over the notch until the collar com-
pletely surrounds the ear cup.
SD Pro1/Pro2 – HS
1Carefully remove the old ear pad from the ear cup.
2Attach the new ear pad to the ear cup by pressing firmly around the ear
pad.
1
3
2
A
B
1 2

Cleaning and maintaining the headset system
36 | SD Series - User Guide
Replacing the headset’s rechargeable battery
Spare rechargeable batteries are available from your Sennheiser partner.
Only use spare rechargeable batteries recommended by Sennheiser.
SD Office – HS
1Remove the earhook or the headband (see page 11) and open the
battery compartment.
2Carefully move the battery compartment cover in the direction of the
arrow until you overcome a slight resistance. Remove the rechargeable
battery and carefully loosen the connector plug of the rechargeable
battery.
3Insert the connector plug of the new rechargeable battery into the con-
nection socket. Observe correct orientation of the connector plug.
4Close the battery compartment.
CAUTION
Damage to the product due to improper handling
The cables can be kinked or damaged if you open the battery compartment
too jerkily.
왘Carefully open the battery compartment and loosen the connector plug
of the rechargeable battery.
1
2 3
4
Cleaning and maintaining the headset system
SD Series - User Guide | 37
SD Pro1 – HS
1Open the battery compartment cover.
2Remove the rechargeable battery and carefully loosen the connector
plug of the rechargeable battery.
3Insert the connector plug of the new rechargeable battery into the con-
nection socket. Observe correct orientation of the connector plug.
4Replace the battery compartment cover.
1 2
3 4

Cleaning and maintaining the headset system
38 | SD Series - User Guide
SD Pro2 – HS
1Carefully remove the ear pad from the ear cup where the battery com-
partment is located.
2Open the battery compartment.
3Remove the rechargeable battery and carefully loosen the connector
plug of the rechargeable battery.
4Insert the connector plug of the new rechargeable battery into the con-
nection socket. Observe correct orientation of the connector plug.
5Replace the battery compartment cover.
6Reattach the ear pad to the ear cup by pressing firmly around the ear
pad.
1 2
3 4
5 6
If a problem occurs
SD Series - User Guide | 39
If a problem occurs
For causes and solutions that are mainly related to the base station, refer to the chapter “If a problem occurs ...”
in the “Setup Guide”.
For more information and an FAQ list, please visit our website at www.sennheiser.com/cco.
If a problem occurs that is not listed in the above table or if the problem cannot be solved with the proposed
solutions, please contact your local Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at www.sennheiser.com/cco/support.
Problem Possible cause Possible solution Page
Headset is placed into the base
station but the Charge status
LED if off
Rechargeable battery is deep
discharged
Wait several minutes until the
Charge status LED lights up.
29
For quick-charging the headset:
Briefly press the Set button at the
bottom of the base station.
–
Link between headset
and base station
cannot be established
Wrong operating mode
(Phone/PC)
Press the PC button or the
Phone button to select the correct
operating mode.
22
Headset is not paired with the
base station, the Link LED
lights up red
Place the headset into the base
station.
17
Bad radio link between
headset and base station
Transmission range is
exceeded
Reduce the distance between
headset and base station.
–
Adjust the radio range. 16
Noise interference and
connection loss
Microphone rubs on the cheek
or perhaps the beard
Bend the microphone boom so
that the microphone is about
0.8 - 1.2” (2 - 3 cm) from the
corner of your mouth.
13
Too many DECT systems within
the radio range
Reduce the radio range. 16
Set the base station to
narrowband transmission.
16
Distance between base station
and fixed line phone is so small
that interference occurs
Increase the distance between
base station and fixed line phone.
–
Rechargeable battery cannot
be charged
Charging contacts of the
headset or the base station are
dirty
Clean the charging contacts on
the headset and on the base
station.
34
Rechargeable battery is
defective
Replace the defective
rechargeable battery with a new
one.
36
Headset is not properly placed
into the magnetic holder of the
base station
Check if the headset is properly
placed into the magnetic holder.
29
Rechargeable battery is
quickly depleted even after
charging
Overaged rechargeable battery Replace the overaged rechargeable
battery with a new one.
36
Bad audio quality, the other
party sounds too low or too
loud
Microphone sensitivity is not
correctly adjusted
Adjust the microphone sensitivity. 19
Sound from the fixed line
phone is distorted and
disturbed
Base station is not adjusted to
the fixed line phone.
Use the ABC switch to adjust the
base station to your fixed line
phone.
19