Sennheiser SR 2020-D - User manual

SR 2020-D
Instruction manual

SR 2020-D | 1
Important safety instructions
Important safety instructions
1. Read these safety instructions and the instruction manual of the product.
2. Keep these safety instructions and the instruction manual of the product. Always include
all instructions when passing the product on to third parties.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Only clean the product when it is not connected to the power supply system. Clean only
with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer‘s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9. Only operate the product from the type of power source specified in the chapter „Specifi-
cations“ and indicated on the power supply unit.
10. Protect the power cord from being walked on or pinched, particularly at plugs, conve-
nience receptacles, and the point where it exits from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or
sold with the apparatus. When a cart is used, use caution when moving the cart/appara-
tus combination to avoid injury from tip-over.
13. Unplug the power supply unit from the wall socket,
• to completely disconnect the product from the power supply system,
• during lightning storms,
• when not using the product for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the appara-
tus has been damaged in any way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus, when the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped.
15. Only use the supplied power supply unit.
16. Warning: To reduce the risk of fire or electric shock, do not expose this apparatus to rain
or moisture and objects filled with liquids, such as vases, should not be placed on this
apparatus.
17. When using the supplied device feet, do not place the product on delicate surfaces. Del-
icate surfaces can become discolored or stained when they come into contact with the
plastic of the device feet.
18. Always ensure that the power supply unit is
• in a safe operating condition and easily accessible,
• properly plugged into the wall socket,
• only operated within the permissible temperature range,
• not covered or exposed to direct sunlight for longer periods of time in order to prevent
heat accumulation.

2 | SR 2020-D
Important safety instructions
Risk of fire due to overloading
Do not overload wall outlets and extension cables as this may result in fire and electric
shock.
Replacement parts
When replacement parts are required, be sure the service technician uses replacement parts
specified by Sennheiser or those having the same characteristics as the original part. Unau-
thorized substitutions may result in fire, electric shock, or other hazards.
Danger due to high volume levels
This product is used for commercial purposes. Commercial use is subject to the rules and
regulations of the trade association responsible. Sennheiser, as the manufacturer, is there-
fore obliged to expressly point out possible health risks arising from use.
This product is capable of producing sound pressure levels 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:
• You can hear ringing or whistling sounds in your ears.
• You have the impression (even for a short time only) that you can no longer hear high
notes.
Inform all users of these risks and ask them to set the volume to a moderate level if neces-
sary.
Intended use
The product is designed for indoor and outdoor use.
The product can be used for commercial purposes.
It is considered improper use when the product is used for any application not named in the
corresponding instruction manual.
Sennheiser does not accept liability for damage arising from improper use or misuse of this
product and its attachments/accessories.
Before putting the products into operation, please observe the respective country-specific
regulations!
Sennheiser is not liable for damages resulting from the loss of connection due to flat or over-
aged (rechargeable) batteries or exceeding the transmission range.

SR 2020-D | 3
Delivery includes
Delivery includes
• SR 2020-D transmitter
• NT 2-3 mains unit
• Telescopic antenna
• GA 2 rack adapter, consisting of
• 2 rack mount “ears”
• Blanking plate
• Jointing plate
• 2 blanking plugs for closing off unused BNC holes
• 12 recessed head screws M 3x6
• 2 recessed head screws M 6x10
• 4 device feet
• Instruction manual
• Manufacturer declarations
System components
The SR 2020-D transmitter allows the stationary use of the Tourguide 2020-D system.
The transmitter can be combined with the following individual components:
• HDE 2020-D-II stethoset receivers
• EK 2020-D-II receivers

4 | SR 2020-D
Tourguide system overview
Tourguide system overview
Together with the SR 2020-D transmitter, the Tourguide 2020-D system offers optimum digi-
tal speech transmission for the following applications:
• simultaneous interpretations and
• stationary guided tours
Areas of application
Simultaneous interpretations during conferences (“Conference“ mode)
The main application of the stationary SR 2020-D transmitter is its use for simultaneous
interpretations during conferences.
Eight fixed transmission frequencies allow for interference-free simultaneous interpretations
in up to eight languages (see “Transmitting several languages simultaneously” on page 17).
tourguide
tourguide
tourguidetourguide

SR 2020-D | 5
Tourguide system overview
Stationary guided tours (“Tourguide“ mode)
With a stationary guided tour, both the group and the transmitters are in a fixed location.
Examples for stationary guided tours are multimedia presentations, movie shows as well as
boat and bus tours in several languages.
Six fixed transmission frequencies allow for simultaneous transmission in up to six languages
(see “Transmitting several languages simultaneously” on page 17).
The Tourguide 2020-D system operates in the 863 MHz–865 MHz frequency band, which is
license-free in Europe (see „Specifications“ on page 22).
Connection possibilities
You can connect one of the following phantom-powered Sennheiser condenser microphones
(not included) to the SR 2020-D transmitter:
• ME 34, ME 35, ME 36
In addition, you can connect an audio source to the transmitter:
• Conference/interpretation systems
• MP3 player
• CD /DVD player

6 | SR 2020-D
Product overview
Product overview
2
910 11 12 78
tourguide
46512 3
1 Headphone output (PHONES),
¼” (6.3 mm) jack socket
2 Headphone volume control (VOL)
3 Display, backlit
4 rocker button ▲/▼, backlit
5 SET button, backlit
6 ON button, backlit (serves as the ESC
(cancel) key in the operating menu)
7 Cable grip for mains cable
8 Socket for connection of mains unit
(DC IN 12 V/300 mA)
9 Audio input (AF IN MIC/LINE), XLR-3F
socket
10 Service interface (DATA)
11 Type plate
12 Antenna output (ANT), BNC socket


1 Display for the selected signal source
(„Mic“/„Line“)
2 Mic-/Line level display
3 Channel display
4 Lock mode icon (lock mode is activated)

SR 2020-D | 7
Product overview
Indications and displays on the transmitter
Display for the selected signal source (Mic/Line)
You can connect either a condenser microphone or an external audio source to the transmit-
ter.
If you connect a condenser microphone, select “Mic” via the operating menu. If you connect
an external audio source, select “Line” (see page 19).
“Mic” or “Line” appears on the display 1.

Note: If the “Mic” microphone input is selected but no microphone is connected, “No Mic”
appears on the display.
Mic/Line level display
The Mic-/Line level display 2shows the input level.
When the transmitter’s audio input level is excessively high, the Mic-/Line level display 2
shows full deflection.

In addition, the display panel is in backlit in red and the text “PEAK” flashes in alternation
with the channel display (see page 19).
Channel display
The channel display 3provides information on the currently selected channel (see page 17).

Lock mode icon
The lock mode icon 4appears when the lock mode is activated (see page 20).


8 | SR 2020-D
Putting the SR 2020-D into operation
Putting the SR 2020-D into operation
Preparing the transmitter for use
You can set up the SR 2020-D transmitter on an even surface or mount it into a 19" rack.
Note: Do not fit the rubber feet when rack mounting the transmitter.
Setting up the transmitter on an even surface
To ensure that the transmitter cannot slip on the surface on which it is placed, four self-ad-
hesive soft rubber feet are supplied.
CAUTION
RISK OF STAINING OF FURNITURE SURFACES!
Some furniture surfaces have been treated with varnish, polish or synthetics which might
cause stains when they come into contact with other synthetics.
Despite a thorough testing of the synthetics used by us, we cannot rule out the possibility of
staining.
Do not place the transmitter on delicate surfaces.
Ensure that the base of the transmitter is clean and free from grease before mounting the
rubber feet.
Fix the rubber feet to the base of the transmitter by peeling of the safety paper and fitting
them as shown in the diagram.
Connecting the antenna
Connect the telescopic antenna to the antenna output 12 at the rear of the transmitter.
To obtain the best possible radiation power:
Align the antenna vertically.
2
12

SR 2020-D | 9
Putting the SR 2020-D into operation
Rack-mounting
CAUTION
RISKS WHEN RACK MOUNTING THE TRANSMITTER!
When installing the device in a closed or multi-rack assembly, please consider that, during
operation, the ambient temperature, the mechanical loading and the electrical potentials will
be different from those of devices which are not mounted into a rack:
The ambient temperature within the rack must not exceed the temperature limit specified
in the specifications.
When installing the device in a rack, take good care not to affect the ventilation required
for safe operation. If necessary, provide additional ventilation.
Make sure the mechanical loading of the rack is even to avoid a hazardous condition such
as a severely unbalanced rack.
When connecting the device to the mains, observe the information indicated on the type
plate. Avoid circuit overloading. If necessary, provide overcurrent protection.
When installing the device in a closed or multi-rack assembly, please note that intrinsi-
cally harmless leakage currents of the individual mains units may accumulate, thereby
exceeding the allowable limit value. As a remedy, ground the rack via an additional ground
connection.
Mounting the antennas to the front or rear of the rack
For the best possible radiation power, you should align the antennas vertically. If this is not
possible, use one of the optional antenna mounts (see “Accessories and spare parts” on page
25):
• You mount 1 transmitter: Antenna mount AM 2
• You mount 2 transmitters: Antenna mount GA 3030 AM
When using several transmitters simultaneously, make sure that, in order to avoid interfer-
ence, the distance between the antennas is sufficient. If necessary, use active transmitter
combiners (see “Accessories and spare parts” on page 25):
• You mount 4 transmitter: Active Transmitter Combiner AC 3
• You mount 8 transmitters: Active Transmitter Combiner AC 3200-II
If you want to mount the antennas outside the rack, you can use remote antennas (see “Ac-
cessories and spare parts” on page 25).

10 | SR 2020-D
Putting the SR 2020-D into operation
Mounting two SR 2020-D side by side
Place the two transmitters side by side upside-down onto a flat surface.
Align the jointing plate 15 over the holes in the bottom sides of the transmitters.
Secure the jointing plate 15 to the transmitters using eight of the supplied recessed head
screws (M 3x6).
Hook the two rack mount “ears” 14 to the front panels of the transmitters.
Secure the rack mount “ears” 14 to the transmitters using two of the supplied recessed
head screws (M 3x6) respectively. If you wish to mount the antenna connections to the
front of the rack, use the rack mount “ears” of the optional GA 3030 AM antenna mount.
Slide the transmitters into the 19" rack.
Secure the rack mount “ears” 14 to the rack.
14
14
15
Mounting only one SR 2020-D
When mounting only one transmitter into the rack, use the blanking plate 13 instead of the
second transmitter.
Hook the two rack mount “ears” 14 to the front panel of the transmitter.
Secure the rack mount “ears” 14 to the transmitter using two of the supplied recessed head
screws (M 3x6) respectively.
Secure the blanking plate 13 to one of the rack mount “ears” 14 using two of the supplied
recessed head screws (M 6x10).
If you are not front mounting the BNC output connector, insert the two blanking plugs 16
into the holes of the blanking plate.
Slide the transmitter into the 19" rack.
Secure the rack mount “ears” 14 to the rack.

SR 2020-D | 11
Putting the SR 2020-D into operation
13
14
14
16
Connecting the transmitter to the mains
Pass the cable through the cable grip 7.
Connect the cable of the mains unit to the DC IN socket 8of the transmitter.
Plug the mains connector into the wall socket.
2
78
Connecting external devices
You can connect either a microphone (Mic) or an external audio source (Line, e.g. CD or MP3
player) to the transmitter.
To do so, use a suitable audio cable with a length of up to 3 m.
Connecting an external audio source to the transmitter
Connect the line output of the external audio source to the XLR-3F socket 9of the trans-
mitter.
2
9

12 | SR 2020-D
Putting the SR 2020-D into operation
Connecting a condenser microphone
The microphone input of the SR 2020-D transmitter is exclusively designed for use with con-
denser microphones. Suitable microphones are listed on page 5.
Connect the condenser microphone to the XLR-3F socket 9of the transmitter.
2
9
Connecting the headphones
The Mic/Line level display 2displays the strength of the input signal (see page 7). The
SR 2020-D transmitter also features a headphone output for monitoring purposes.

CAUTION
DANGER OF HEARING DAMAGE!
Listening at high volume levels for long periods can lead to permanent hearing defects.
Use the headphone volume control (VOL) 2to set the volume for the connected head-
phones to the minimum before putting the headphones on.
To monitor the audio signal via headphones:
Set the headphone volume control 2to the lowest volume by turning it to the left as far as
possible.
Connect headphones with a ¼" (6.3 mm) stereo jack plug to the headphone output 1.
Put the headphones on.
Gradually turn up the volume.
2
1

SR 2020-D | 13
Operating the SR 2020-D
Operating the SR 2020-D
Switching the transmitter on/off
To switch the transmitter on:
Press the ON button 6.
The display panel indicates the device name and then switches to the standard display.
tourguide
6
To switch the transmitter off:
Press the ON button 6until “OFF” appears on the display.
Release the ON button 6.
The display panel goes off and the transmitter switches off.
Note: The transmitter can only be switched off when the standard display is shown on the
display panel. When in the operating menu, the ON button 6 serves as the ESC (cancel) key,
i.e. you cancel your entry and return to the standard display.
Working with the operating menu
By way of example of the „Chan. mode“ menu (Channel mode) this section describes how to
use the operating menu.
For an overview of the operating menu, please see page 19.
Make sure that the lock mode is deactivated (see page 18).
Getting into the operating menu
To get from the standard display into the operating menu:
Press the SET button 5.
The „Channel“ menu is highlighted with a black bar.
tourguide
5

14 | SR 2020-D
Operating the SR 2020-D
Selecting a menu
Use the ▲/▼ rocker button 4to select the „Chan. mode“ menu:
Rocker button Display
press ▲jumps to the previous menu
press ▼jumps to the next menu
keep ▲or ▼ pressed cycles continuously
tourguide
4
Press the SET button 5 to get into the setting mode of the „Chan. mode“ menu.
The current setting of the menu is displayed.
Adjusting a setting in the setting mode
Use the ▲/▼ rocker button 4 to jump between the settings.
Storing a setting
Press the SET button 5 to store the selected setting.
„STORED“ briefly appears on the display.
Exiting a menu
Press the ON button 6 to return to the operating menu.
Exiting the operating menu
Use the ▲/▼ rocker button 4 to select the „Exit“ menu and press the SET button 5.
The standard display is shown on the display panel.
Or:
Press the ON button 6 until the standard display is shown on the display panel.

SR 2020-D | 15
Operating the SR 2020-D
Selecting the menus
The transmitter’s operating menu contains the following menus:
Menu Function of the menu
“Channel” Selecting a channel (see page 15)
“Frequency”
Displaying the frequency of the current channel (see page 16)
“Chan. mode” Selecting the channel mode (see page 16)
“Input” Selecting the input signal (see page 17)
“Sensitiv” Adjusting the input sensitivity (see page 17)
“Phantom” Displaying the phantom power (see page 17)
“Contrast” Adjusting the contrast (see page 17)
“Lock” Activating/deactivating the lock mode (see page 18)
“Reset” Loading the factory-preset default settings (see page 18)
“Version” Displaying the current software version (see page 18)
“Exit” Exiting the operating menu
Setting a channel (“Channel”)
To set a certain channel, proceed as follows:
Make sure that the transmitter and the receivers are set to the same channel mode (“Tour-
guide” or “Conference”), otherwise no connection can be established (see page 16).
Set the SR 2020-D transmitter to the desired channel (see next section).
Set one of the receivers to the same channel.
Automatically set all other receivers to the same channel using the channel copy function
(for information on the channel copy function, please refer to the instruction manual of the
Tourguide 2020 system).
To set the transmitter to the desired channel:
Select the „Channel“ menu.
„Channel“ appears on the display and the current channel is shown.
the ▲/▼ rocker button 4 to change the channel.
Press the SET button 5 to store the selected channel.
Transmitting several languages simultaneously
In order to be able to transmit several languages simultaneously, you require one SR 2020-D
transmitter and one or several receivers per language:
Set the transmitter and the receivers assigned to certain language to the same channel.
Do not use this channel for any other language.

16 | SR 2020-D
Operating the SR 2020-D
Displaying the frequency of the selected channel (“Frequency”)
You can display the frequency of the selected channel. This function is useful, if you are
using other Tourguide systems in the vicinity which interfere with your transmission (see
previous section).
Select the „Frequency“ menu.
„Frequency“ appears on the display and the frequency of the current channel is shown.
Changing the channel mode (“Chan. mode”)
You can choose between the two channel modes “Conference” and “Tourguide”. The two
modes have been designed for different applications and differ from each other in the num-
ber of available channels:
Channel mode Application Number of channels
Conference Simultaneous interpretations 8
Tourguide Tourguide systems 6
To change the channel mode:
Select the „Chan. mode“ menu.
Use the ▲/▼ rocker button 4 to to change the channel mode („Tourguide“/„Conference“).
Press the SET button 5 to store the selected channel mode.
Display of the channel mode
The selected channel mode appears on the standard display as follows:
Display Channel mode
„Tourguide“
„Conference“

SR 2020-D | 17
Operating the SR 2020-D
Selecting the input signal (“Input”)
You can connect either a condenser microphone or any other audio source (e.g. CD and MP3
player, see page 5) to the transmitter.
To select the input signal:
Select the „Input“ menu.
Press the SET button 5 to display the current setting („Mic“/„Line“).
Use the ▲/▼ rocker button 4 to select the desired input signal:
You connect ... Select
a condenser microphone? „Mic“
an external audio source? „Line“
Press the SET button 5 to store the selected input signal.
Adjusting the sensitivity of the Mic/Line input (“Sensitiv”)
If you connect a microphone to the transmitter, the microphone signal has to be amplified
by the transmitter. Other audio sources can be amplified, if their audio signal is too low (see
page 17).
To adjust the input sensitivity:
Select the „Sensitiv“ menu.
Use the ▲/▼ rocker button 4 to change the setting. The Mic/Line level display 2should
show full deflection during the loudest passages.
Press the SET button SET 5 to store the input sensitivity of the Mic / Line input.
Displaying the phantom power (“Phantom”)
When you activate the transmitter’s microphone input, the phantom power is automatically
available (see page 17). The display show the value of the phantom power.
Adjusting the contrast of the display (“Contrast”)
To adjust the contrast of the display to the ambient light:
Select the „Contrast“ menu.
„Contrast“ appears on the display and the current setting is shown.
Use the ▲/▼ rocker button 4 to change the setting.
Press the SET button 5 to store the setting.

18 | SR 2020-D
Operating the SR 2020-D
Activating/deactivating the lock mode (“Lock”)
The lock mode prevents that the transmitter is accidentally programmed or switched off
during operation.
To activate the lock mode:
Select the „Lock“ menu.
Select the setting „Lock On“.
Press the SET button 5.
The lock mode is activated and the lock mode icon appears on the standard display.
To deactivate the lock mode:
Press the SET button 5.
„Lock On“ appears on the display.
Select the setting „Lock Off“.
Press the SET button 5 to deactivate the lock mode.
The lock mode icon disappears from the standard display.
Loading the factory-preset default settings (“Reset”)
Select the „Reset“ menu.
„Reset No“ appears on the display.
Press the ▲/▼ rocker button 4 until „Reset Yes“ appears on the display.
Press the SET button 5 to reset the device to the factory-preset default settings.
„DONE“ appears on the display. The transmitter is reset to the following factory-preset
default settings:
• Channel mode: Tourguide
• Input signal: Line input
• Channel: 1
• Input sensitivities:
• Line input: 0 dB
• Microphone input: 0 dB
• Lock mode: deactivated
Displaying the version number of the software (“Version”)
Note: This function is for servicing purposes only.
To display the version number:
Select the “Version” menu.
The version number appears on the display.

SR 2020-D | 19
Operating the SR 2020-D
Overview of the operating menu
Pressing the ON button 6will cancel your entry in all menu modes.
SET
SET,
ON
SET
SET,
ON
SET
SET,
ON
SET
SET,
ON
STORED
STORED
STORED
STORED
Selecting
the channel Current channel
Channel 1Channel 6
Phantom power
 /  : 1...6/8
SET: Stores the setting
CHAN 01
SR 2020-D
SET
SET
ON, SET
3 Sec
Current setting
Frequency
863.124
Channel
1
Frequency
863.124
Displaying
the frequency
Chan. mode
Tourguide
SET
 /

SET: Stores the setting
Current setting
Chan. mode
Tourguide Chan. mode
Conference
Setting
the channel
mode
SET
 / 
SET: Stores the setting
Current setting
Input
Line
Selecting the
input signal
Input
Line Input Mic
SET
SET
 / 
Mic: 0 to -36dB
Line: 0
to -24dB
SET: Stores the setting
Current setting
Sensitiv
0 dB Sensitiv 0 dB Sensitiv – 36 dB
Setting
the input
sensitivity
EXIT
Selection mode Setting mode