Sennheiser SYSTEM 2020 User manual

Tourguide
System 2020
Instructions for use

1
Contents
Important safety instructions ...................................................................................... 2
System components ........................................................................................................ 6
Overview of the system .................................................................................................. 7
The operating controls .................................................................................................... 9
Indications and displays on the bodypack transmitter ......................................... 13
Indications and displays on the wireless microphone ............................................ 15
Indications and displays on the receiver ................................................................... 16
Indications and displays on the charging case ........................................................ 18
The functions of the bodypack transmitter/
wireless microphone operating controls ................................................................... 20
The functions of the receiver operating controls .................................................... 21
The functions of the operating controls of the charging case ............................. 21
Putting the components into operation ................................................................ 22
Using the components ................................................................................................. 26
Switching the devices on/off ...................................................................................... 26
Adjusting the volume ................................................................................................... 28
Charging the rechargeable batteries ......................................................................... 29
Setting the channel ....................................................................................................... 32
Muting the devices ........................................................................................................ 35
Special bodypack transmitter/wireless microphone settings .............................. 36
The operating menu of the bodypack transmitter/wireless microphone .......... 42
Overview of the bodypack transmitter's operating menu .................................... 43
Overview of the wireless microphone's operating menu ...................................... 45
Care and maintenance .................................................................................................. 47
If a problem occurs... ..................................................................................................... 48
Specifications ................................................................................................................... 49
Accessories ....................................................................................................................... 51
Manufacturer declarations ......................................................................................... 52
Index ................................................................................................................................... 55
Thank you for choosing Sennheiser!
We have designed this product to give you reliable operation over many years. Over 60 years of
accumulated expertise in the design and manufacture of high-quality electro-acoustic equipment have
made Sennheiser a world-leading company in this field.
Please take a few moments to read these instructions carefully, as we want you to enjoy your new
Sennheiser products quickly and to the fullest.

2
Important safety instructions
Important safety instructions
1. Read these instructions.
2. Keep these instructions safe. Always pass on these instructions to other users
along with the devices.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use these devices near water.
6. Clean only with a dry cloth.
7. Do not block any air vents. Set up the devices in accordance with the
manufacturer's instructions.
8. Do not place the devices near heat sources such as radiators, heat registers,
stoves or other apparatus (including amplifiers) that produce heat.
9. Only use the type of power supply indicated on the plug. Always plug the
receiver into a grounded mains outlet.
10. Make sure that the power cord can't be stepped on or pinched, especially at the
plug, the power outlet and the point where it comes out of the device.
11. Only use attachments/accessories recommended by Sennheiser.
12. Only use with the carts, stands, tripods, brackets or tables
specified by the manufacturer or sold with the devices.
When using a cart to move the devices, be very careful when
pushing it to avoid injury and prevent the cart from toppling
over.
13. Unplug the devices during thunderstorms or when unused for
long periods of time.
14. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been damaged in any way, such
as if the power cord is damaged, liquid has been spilled or objects have fallen
into the apparatus, if the apparatus has been exposed to rain or moisture, is not
working properly or has been dropped.
15. Pull the plug out of the socket to disconnect the apparatus from the mains.
16.WARNING: To reduce the risk of fire or electric shock, do not expose the
apparatus to rain or moisture.
17. Do not allow water to splash or drip onto the apparatus. Do not place objects
filled with water, such as vases, on the equipment.
18. Make sure that the power cord plug is always in perfect condition and is easy
to get at.

3
Important safety instructions
The warning on the EZL 2020-20 L charging case
This label shown on the left is on the back of the
device. The symbols have the following meanings:
This symbol warns of the risk of electric shock due to
high internal voltages.
This symbol warns of the risk of electric shock. The
device must not not be opened. There are no
components inside the device which can be repaired
by the user. Refer all repairs to qualified customer
service personnel.
This symbol indicates that the manual accompanying
this device contains important operating and
maintenance instructions.
Overloading
Do not overload wall sockets or extension cords. This
may result in fire or electric shock.
Replacement parts
When replacement parts have to be installed, ensure
that the service technician uses replacement parts
recommended by Sennheiser or replacement parts
with the same features as the original parts.
Incompatible replacement parts can cause fire, electric
shock or pose other risks.
Safety check
Have the service technican perform safety checks
after finishing the service or repairs to ensure that the
equipment is in safe working order.

4
Important safety instructions
Danger due to high volume!
The equipment is used for commercial purposes.
Commercial use is subject to the rules and regulations
of the trade association responsible. Sennheiser, as
the manufacturer, is therefore obliged to expressly
point out possible health risks arising from use.
The HDE 2020 D stethoset receivers are capable of
producing sound pressure exceeding 85 dB (A).
85 dB (A) is the sound pressure corresponding to the
maximum permissible volume which is by law (in
some countries) allowed to affect your hearing for the
duration of a working day. It is used as a basis
according to the specifications of industrial medicine.
Higher volumes or longer durations can damage your
hearing. At higher volumes, the duration must be
shortened in order to prevent hearing damage. The
following are sure signs that you have been subjected
to excessive noise for too long a time:
yYou can hear ringing or whistling sounds in your
ears.
yYou have the impression (even for a short time
only) that you can no longer hear high notes.
Normal use of the equipment
Normal use of the equipment includes:
yusing the equipment for commercial purposes,
yreading these instructions and, in particular, the
section “Important safety Instructions” on page 2,
yonly using the equipment under the operating
conditions, as described in these instructions.
Using the equipment other than as described in these
instructions or non-compliance with the operating
conditions is considered improper use.

5
Important safety instructions
Safety instructions for Li-poly and NiMH rechargeable batteries and batteries
If abused or misused, rechargeable batteries may leak. In extreme cases, they may
even present
Sennheiser does not accept any liability for damage arising from abuse or misuse.
Additional safety instructions for the BA 2015 accupack and for batteries
ya heat hazard,
ya fire hazard,
ya leakage hazard,
yan explosion hazard,
ya smoke or gas hazard.
Do not solder.
Immediately remove flat batteries/
rechargeable batteries from the
device.
Keep out of the reach of children.
Do not heat above 70°C/158°F, e. g.
do not expose to sunlight or throw
into a fire.
Do not expose to moisture.
Do not short-circuit.
Do not dismantle or bend out of
shape.
Do not mix up charged batteries.
Do not continue to use defective re-
chargeable batteries.
Only use original Sennheiser re-
chargeable batteries.
Observe correct polarity.
Switch rechargeable battery-pow-
ered devices off after use.
Only charge rechargeable batteries
with the appropriate Sennheiser
chargers.
When not using rechargeable bat-
teries for extended periods of time,
charge them regularly (about every
three months).
Only charge rechargeable batteries
at ambient temperatures between
10°C and 40°C.
Stop charging immediately if it is
obvious that the devices are faulty.
Dispose of rechargeable batteries
and devices with built-in rechargea-
ble batteries at special collection
points or return them to your spe-
cialist dealer.

6
System components
System components
The 2020 D Tourguide System consists of the
following components which are available from your
Sennheiser agent:
yEZL 2020-20 L charging case including
instructions for use of the overall system
ySK 2020 D bodypack transmitter
ySKM 2020 D wireless microphone
yHDE 2020 D stethoset receivers
yBA 2015 accupack
yPower cord
yMicrophone (see next section)

7
Overview of the system
Overview of the system
The 2020 D Tourguide System offers optimum digital
speech transmission for guided tours e. g. in factories
or museums. The use of RF transmission allows
freedom of movement for all members of the group.
Six preset intermodulation-free receiving frequencies
offer high flexibility and adaptability.
In Europe, the 2020 D Tourguide System is approved
in the frequency range 863 – 865. See the overview on
page 50.
SK 2020 D bodypack transmitter
You can connect one of the following Sennheiser
microphones (not included) to the bodypack
transmitter:
yClip-on microphones:
ME 2-N, ME 4-N, MKE 2-EW GOLD
yHeadmics:
ME 3-N, HSP 2-EW, HSP 4-EW, HS 2-EW
yHand-held microphones with special connecting
cable:
e 815, e 825 S, e 835, e 840, e 845
In addition, you can connect any audio source (e. g. a
flash / MP3 player) to the bodypack transmitter.
The SKM 2020 D wireless microphone
This extremely robust wireless microphone can be
used in various tour situations. The wireless
microphone is easy to configure and use.
The wireless microphone can be placed in the charging
case and secured with a Velcro strap for storage and
safe transportation.

8
Overview of the system
The HDE 2020 D stethoset receivers
The stethoset receivers are easy to use and
comfortable to wear. The built-in display shows all the
important information at a glance (receiving channel,
reception quality, charge status of the built-in
lithium-polymer rechargeable battery as well as the
currently set volume). The rocker button allows fast
and easy setting of the desired channel.
The system can be expanded at any time by adding
additional stethoset receivers.
The EZL 2020-20 L charging case
The charging case simultaneously recharges the
rechargeable batteries of up to 20 stethoset receivers
and the accupack of the bodypack transmitter/
wireless microphone. You do not have do remove the
accupack from the bodypack transmitter to recharge
it. You can recharge one other accupack in addition to
the bodypack transmitter. The channel copy function
lets you set all receivers to the same channel at the
press of a button.
Additional features of the charging case:
yQuick charge of accupacks.
yAutomatic detection of full charge and subsequent
switching to trickle charging so the accupacks can
remain in the charger even when they have been
fully charged.
yHighest possible operational reliability, since
temperature and voltage of the accupacks are
monitored during charging.
yLong accupack service life due to overcharge
protection and recovery of deep-discharged
accupacks.
ySafe carrying and storage of system components.