OPERATING INSTRUCTIONS
Stegos
Wireless digital Boundary Microphone System
Stegos – Contents
3
1. Safety and environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Stegos RS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Stegos TB boundary microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Stegos RS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Controls and indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 How to connect the antennae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Where to place the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 How to operate the receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 How to install a receiver into a 19" rack. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3. Stegos TB boundary microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Controls and indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 How to operate the microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 How to recharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Mains operated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4. Stegos software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Putting into operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6. Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7. Trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8. Simultaneous operation of the Stegos system and other 2.4 GHz devices . . . . . . . 18
8.1 Physical laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.2 Stegos and WLAN or WiFi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.3 Stegos and Bluetooth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.4 Example for Stegos, media control systems and WLAN. . . . . . . . . . . . . . . . 20
9. Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10. Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
EC-Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
FCC-Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Stegos – Safety and Environment
4
Thank you for selecting the Stegos wireless digital boundary microphone system. Please take some time
to read carefully through this manual before setting up the equipment.
The wireless Stegos system includes receiver and boundary microphone and has been developed
especially for the use with video conference systems. Up to three Stegos systems can be operated in
neighbouring rooms simultaneously.
1. Safety and environment
1.1 Stegos RS receiver
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
8. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
9. Only use attachments/accessories specified by the manufacturer.
10. Unplug this apparatus during lightning storms or when unused for long periods of time.
11. Refer all servicing to qualified service personnel. Servicing is required when the apparatus 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, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
Exemption from liability
• beyerdynamic GmbH & Co. KG will not be liable if any damage, injury or accident occurs due to
negligent, incorrect or inappropriate operation of the product.
Location
• The equipment must be set up so that the mains switch, mains plug and all connections on the rear
of the device are easily accessible.
• If you transport the equipment to another location take care to ensure that it is adequately secured
and can never be damaged by being dropped or by impacts on the equipment.
Fire hazard
• Never place naked flames (e.g. candles) near the equipment.
The lightning flash within an equilateral triangle is intended to alert the user to the presence of
uninsulated dangerous voltage within the device that may be sufficient enough to constitute a
risk of electric shock to users.
The exclamation mark within an equilateral triangle is intended to alert the user to the presence
of important operating and maintenance instructions in the literature accompanying the product.
Stegos – Safety and Environment
5
Humidity / heat sources
• Never expose the equipment to rain or a high level of humidity. For this reason do not install it in
the immediate vicinity of swimming pools, showers, damp basement rooms or other areas with
unusually high atmospheric humidity.
• Never place objects containing liquid (e.g. vases or drinking glasses) on the equipment. Liquids in the
equipment could cause a short circuit.
• Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus
(including amplifiers) that produce heat.
Connection
• The equipment must be connected to a mains socket that has an earth contact.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
• Lay all connection cables so that they do not present a trip hazard.
• Whenever working on the equipment switch off all inputs and outputs to the power supply.
• Check whether the connection figures comply with the existing mains supply. Serious damage could
occur due to connecting the system to the wrong power supply. An incorrect mains voltage could
damage the equipment or cause an electric shock.
• Please note that different operating voltages require the use of different types of power cable and
plugs.
Please refer to the following table:
• If the equipment causes a blown fuse or a short circuit, disconnect it from the mains and have it
checked and repaired.
• Do not hold the mains cable with wet hands. There must be no water or dust on the contact pins.
In both cases you could receive an electric shock.
• The mains cable must be firmly connected. If it is loose there is a fire hazard.
• Always pull out the mains cable from the mains and/or from the equipment by the plug – never by
the cable. The cable could be damaged and cause an electric shock or fire.
• Do not use the equipment if the mains plug is damaged.
• If you connect defective or unsuitable accessories, the equipment could be damaged. Only use
connection cables available from or recommended by beyerdynamic. If you use cables you have
made up yourself, all claim to warranty is null and void.
Maintenance
• Only clean the equipment with a slightly damp or dry cloth. Never use solvents as these damage the
surface.
Troube shooting and servicing
• Do not open the equipment without authorisation. You could receive an electric shock. There are
no user-serviceable parts inside.
• Leave all service work to authorised expert personnel.
Voltage Power plug according to standard
110 - 125 V UL817 and CSA C 22.2 no 42.
220 - 230 V CEE 7 page VII, SR section 107-2-D1/IEC 83 page C4.
240 V BS 1363 (1984): “Specification for 13A fused plugs and
switched and un-switched socket outlets.”
Stegos – Safety and Environment
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1.2 Stegos TB boundary microphone
• Protect the boundary microphone from moisture and sudden impacts. You could either injure yourself
or others or damage the microphone.
• Never take batteries apart yourself. The battery acid contained will damage skin and clothing.
• The boundary microphone does not contain any user-serviceable parts inside. Dismantling the
microphone yourself may invalidate the guarantee.
• If the rechargeable battery is exhausted after several years, please contact your dealer for an
appropriate exchange.
1.3 Disposal
• Old batteries may contain substances that are harmful to your health and environment.
• The device provides built-in rechargeable batteries, which you cannot remove yourself, therefore,
return the device to your dealer for recycling when the batteries are exhausted.
• All batteries are recycled to reclaim valuable material such as iron, zinc or nickel.
Stegos – RS Receiver
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2. Stegos RS receiver
The receiver provides three different connections for video conference systems: 3-pin Phoenix terminal
strip, mini jack (3.5 mm) and 3-pin XLR. The individual microphone signals are available via a multipin
Phoenix terminal strip. For the data exchange with media control systems or PC there is an RS 232
interface and a USB connection available. The channel LEDs display which channel is occupied (red) or
available (green). Up to four acoustical boundary microphones can be operated with one receiver.
2.1 Controls and indicators
Power on LED
Audio channel LEDs 1 to 4 (green = channel vacant; red = channel occupied)
LEDs for RF band (high, mid, low)
Push-button for RF band selection
Standby button for microphone
LED for headphone channel
Headphone connection
Rotary potentiometer with push-button to select headphone channel and volume of the individual
microphones
USB connection
Antenna connection
RS 232 interface
Output audio channels, 12-pin Phoenix terminal strip
Connection for video conference system, 3-pin Phoenix terminal strip
Connection for video conference system, mini jack (3.5 mm)
Connection for video conference system, 3-pin XLR
Changeover switch
On/Off switch
Fuse
Mains connection
Front view
Rear view
Stegos – RS Receiver
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2.2 How to connect the antennae
Connect the antennae to the antenna sockets .
Please note that for diversity operation both antennae have to be
connected. A weighting circuit silently makes sure that the better
antenna signal is received.
2.3 Where to place the receiver
• Place the Stegos RS receiver in the same room where the
transmission takes place. Make sure that the receiver is placed on
the same table height as the Stegos TB boundary microphone.
• Avoid shadowing effect of the Stegos RS antennae, especially by
metallic surfaces.
• A free line of sight between the Stegos RS receiver and the
Stegos TB microphone is ideal. Big obstacles in between can
possibly affect the radio transmission. In such specific installations
the use of remote antennae can possibly achieve an improvement
of the RF situation.
2.4 Connection
• Connect the Stegos RS receiver to your video conference system.
There are three different connections:
3-pin Phoenix terminal strip
Mini jack (3.5 mm)
3-pin XLR
• Connect the power cable to the mains connection and to the
power socket.
• If you want to control or monitor the system via PC connect the
USB connection to a PC.
Stegos – RS Receiver
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2.5 How to operate the receiver
• Turn on the receiver with the on/off switch . The green power
on LED will illuminate.
• The channel LEDs 1 to 4 will illuminate green to indicate the
availability. As soon as you turn on the first Stegos TB boundary
microphone, the channel LED 1 will illuminate red to indicate
that the channel is occupied.
• At the factory the RF band “Low” has been adjusted. If interferences occur, you should change the frequency band. Use the
tip of a pencil or a paper clip to press the countersunk pushbutton for RF band selection . The boundary microphones are
automatically set to the selected frequency band.
Wiring Phoenix terminal strips – rear view Stegos RS
+- - - - -+++ +
-
+
Shield
Hot
Cold
Stegos – TB Boundary Microphone
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3. Stegos TB boundary microphone
The boundary microphone provides a semi-cardioid polar pattern with a high gain before feedback. The
microphone is powered via integrated rechargeable NiMH batteries, which have to be recharged before
using the microphone the first time. The operating time is 14 hours at minimum. The microphone can
be recharged or operated permanently via a power supply unit connected to the DC connection. The
maximum charging time is around 2 hours. The battery and charging state is displayed via an LED on the
rear of the microphone.
3.1 Controls and indicators
Button for On / Off / Mute of the microphone
DC connection for charging or DC-powered operation
Operating control LED
Button for On / Off of the device
2.6 How to install a receiver into a 19" rack
• If you want to install a receiver into a 19" rack, mount the supplied brackets to the right and left
hand side.
Mounting bracket Mounting bracket
Stegos – TB Boundary Microphone
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3.2 How to operate the microphone
On/Off mode
• Turn on the Stegos TB boundary microphone with the push-
button . The microphone that is turned on first, is always
allocated to channel 1.
• The microphone is open and the push-button will illuminate red.
If you press the push-button another time, the microphone is
muted, but the channel still allocated. The push-button does not
illuminate any more.
Push-To-Mute mode
• Turn on the Stegos TB boundary microphone with the push-
button . The microphone that is turned on first, is always
allocated to channel 1.
• The microphone is open and the push-button will illuminate
red. If you hold down the push-button , the microphone is
muted. The push-button does not illuminate any more. The
microphone is still allocated to a channel.
• If you release the push-button , the microphone is open again.
Function test
• You can test if the boundary microphone are operating:
Connect a headphone to the Stegos RS receiver .
Turn the control to set the volume and press the control
several times until you have listened to all channels from 1 to 4 or
the Mix signal.
How to turn off
• There are several ways to turn off the microphone:
a) Press the on/off switch for about 3 seconds (only when
the on/off mode has been selected).
b) Press the push-button for about 3 seconds at the rear of
the microphone unit.
Stegos – TB Boundary Microphone
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3.3 How to recharge
• Before the Stegos TB boundary microphone is used for the first
time, you have to recharge the integrated rechargeable batteries.
• In order to recharge the batteries connect the supplied mains
charger adapter to the microphone and a power socket. The
LED will illuminate briefly for one time. The charging time is
approx. 2 hours.
• The LED displays the charging process:
LED flashes red . . . . . . . . . . . . . . . Charging in process
LED illuminates permanently red. . Battery is full
LED flashes slowly red. . . . . . . . . . Normal charging process
LED flashes rapidly red . . . . . . . . . Error (in this case disconnect
the mains charger adapter,
then connect again; if needed
phone the support staff)
• The operating time of the rechargeable batteries integrated in the
Stegos TB boundary microphone is at least 14 hours.
The LED on the rear displays a reduced battery charge. When
the LED starts flashing green, the maximum operating time of
the batteries is still approx. 1 hours. The Stegos software displays
the battery status in per cent.
Important:
• Depending on the kind and time of use as well as the number of
charging cycles, rechargeable batteries are subject to a natural
aging process reducing the total capacity and the maximum operating time.
• It is normal that rechargeable batteries are heated up during the
charging process.
• If the boundary microphone is turned on while charging, the
LED will illuminate green.
c) Press the stand-by push-button of the Stegos RS receiver.
d) Turn off the Stegos RS receiver via the on/off switch on
the rear of the Stegos RS receiver.
e) Select the “Power off” push-button in the Stegos software.
Stegos – Software
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Front view Stegos RS
Rear view Stegos RS
3.4 Mains operated
• The Stegos TB boundary microphone can also be powered via the supplied mains charger adapter.
• Connect the mains charger adapter to the DC socket . The LED will illuminate briefly for once,
afterwards the LED will permanently illuminate green.
• The Stegos TB boundary microphone is also charged while the mains charger adapter is connected.
4. Stegos software
With the Stegos software you can configure and monitor many parameters for the Stegos TB boundary
microphone and the Stegos RS receiver.
4.1 System requirements
• PC Pentium III 800 MHz or compatible
• Operating system: Windows®2000 or XP
• Memory: 256 MB RAM at least
• HDD: > 256 MB free space
• Screen resolution: 1024 x 768 or higher
• Graphics card memory: 16 MB
• 1 free USB port or
• 1 free COM port (RS 232)
4.2 Installation
• Connect the Stegos RS receiver and the PC to the mains.
• Connect the USB port or the RS 232 interface of the Stegos RS receiver to the appropriate port
of your PC.
• Turn on the PC.
• Insert the CD-ROM with the Stegos Software into the CD-ROM drive, select “Setup.exe” and install
the software into the requested directory on the hard drive.
• Follow the instructions of the installation program.
Stegos – Software
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4.3 Putting into operation
• Turn on the Stegos RS receiver with the on/off switch on the
rear.
• When the receiver is ready for use, the green Power on LED ,
the audio channel LEDs , the RF band LED and the
appropriate LED of the selected headphone channel will
illuminate on the front.
• Turn on the Stegos TB boundary microphones by pressing the
push-button .
• Start the software.
• When the Stegos RS receiver is connected to the RS 232
interface of your PC, select under “Connectivity Settings” in the
“Settings” menue the appropriate “Com” port and then select
“System Connect”.
Front view Stegos RS
Rear view Stegos RS
• For firmware and software updates please visit our homepage
www.beyerdynamic.com
Stegos TB
Stegos – Software
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4.4 Main menu
System Control
• Here you can set the output volume of the individual channels or the master.
• The microphone which has been turned on first is always allocated to channel 1.
• If you would like to lock some channels, select the “ON” button which is changed into an “OFF” button.
• If the “Global Mute” function is selected, a loudspeaker symbol is displayed under the “Master”
control. If the microphone is muted a crossed-out loudspeaker is displayed.
Microphone Battery Status
• The remaining battery power status of the individual microphones is displayed in per cent.
Connectivity
• An existing connectivity to a PC is displayed by a green bar.
• If the bar is grey, there is no connectivity. Turn on the receiver or select the appropriate Com port
under “Connectivity Settings” in the “Settings” menu. Select the “System Connect” button.
Microphone Global Settings
• Here you can activate the “Global Mute” function. The function is activated when an orange bar is
displayed below the “Global Mute” button.
“Global Mute” means that when one microphone is muted via the push-button , the other Stegos
TB boundary microphones in the room are also muted.
• With the “Power Off” button you can turn off the turned on Stegos TB boundary microphones.
Stegos – Software
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4.5 Settings
Connectivity Settings
• Depending if you have connected the Stegos RS receiver to the USB port or RS 232 interface, you can
select the appropriate Com port.
• When you have selected the Com port, select “Connect”.
• If the connection is to be set automatically after a reboot, tick the “Automatic Reconnect” tick box.
Microphone Status Viewer
• Here you can recognise which microphones are currently active or which microphones were active. The
active microphones display in addition to the serial number, device type and firmware as well as the
channel and RF quality.
• If the RF quality is okay, three bars are displayed. If the RF quality drops, the bars are reduced
correspondingly.
RF Channel Settings
• You can select among three frequency bands: Low, Mid, High.
• In order to set the microphones automatically to the selected frequency band, tick the “Microphone
Auto Lock” tick box.
• If the microphones are configured according to your requests you can deactivate the “Microphone
Auto Lock” tick box.
Tip
The function “Microphone Auto Lock” has the advantage that the microphones automatically search
for a Stegos RS receiver when turned on and are configured to this one. If you change the frequency
band (e.g. to avoid jamming sources such as Wireless LAN), the microphones automatically search for
a receiver again and are configured to the changed frequency band.
Mute Settings
• If you activate the “Toggle Mute” option, the microphone is activated when the push-button is
pressed and deactivated when the push-button is pressed again.
• If you activate the “Push-To-Mute (PTM)” option, the microphone is always open and only muted,
when you hold down the push-button .
Stegos – Software
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5. Maintenance
• Protect the handheld transmitter from humidity, knocks and shock. Avoid dropping the transmitter at
all times
• For cleaning metal surfaces, use a soft cloth moistened with methylated spirits or alcohol.
6. Service
Servicing must be carried out by qualified service personnel only. Dismantling the microphone yourself
will invalidate the guarantee.
Software Programmer
• In the Software Programmer area you can update the firmware of the Stegos receiver and the
boundary microphones.
• If you would like to update the firmware of the receiver, select the “Select File” button, select the
appropriate file and then select the “Start Update” button.
• If you would like to update the firmware of the boundary microphones, tick the “RF Update” tick
box, select the “Select File” button, choose the appropriate file and select the “Start Update” button.
Stegos – Trouble Shooting
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8. Simultaneous operation of the Stegos system and other 2.4 GHz devices
(e.g. WLAN, Bluetooth)
8.1 Physical laws
Due to many physical laws it is not possible to guarantee a simultaneous interference-free operation of
different devices using the same frequency band. Radio devices operating in the same frequency band
will always disturb each other (the function can be disturbed as well).
For the use of UHF wireless microphones it is known that 2 devices can never be operated on the same
frequency. It is only possible to operate a certain number of compatible radio devices within a defined
frequency band.
This applies also to the 2.4 GHz-ISM band (2400 MHz - 2484 MHz). Due to digital transmission
techniques and various transmission standards it is possible, but not recommended, to operate certain
devices simultaneously within the same frequency band.
7. Trouble shooting
Problem Possible Cause Solution
The green operating control
LED of the boundary
microphone will flash.
• The rechargeable battery is
almost empty.
• Recharge the boundary
microphone.
The boundary microphone goes
off.
• The rechargeable battery is
empty.
• Recharge the boundary
microphone.
It is not possible to allocate the
microphone.
• The microphone is not within
the range of the receiver.
• Interference caused by
WLAN
• Reduce the distance between
receiver and boundary microphone.
• Select another frequency
band with the push-button .
The boundary microphone
cannot be turned on.
• The rechargeable battery is
empty.
• Recharge the boundary
microphone.
The boundary microphone
can be turned on, but not
allocated.
• The receiver is not turned on.
• The microphone is not within
the range of the receiver.
• The channels in the Stegos
Software are not activated.
• The number of the allowed
microphones is exceeded.
• Turn on the receiver.
• Reduce the distance between
receiver and boundary microphone.
• Activate the channels in the
Stegos Software.
• Please note that 4 microphones can simultaneously
be operated at maximum.
Stegos – WLAN
19
2400 MHz Low Mid High 2484 MHz
Frequency /
MHz
8.2 Stegos and WLAN or WiFi
Like WLAN, the Stegos system uses the same bandwidth of approx. 22 MHz for each RF channel (Low,
Mid, High). This results in three compatible RF channels in the 2.4 GHz-ISM band. These are theoretically:
Compatible channel 1: 2400 MHz - 2428 MHz (theoretical mid frequency: 2414 MHz)
Compatible channel 2: 2428 MHz - 2456 MHz (theoretical mid frequency: 2442 MHz)
Compatible channel 3: 2456 MHz - 2484 MHz (theoretical mid frequency: 2470 MHz)
The Stegos system uses RF channels (Low, Mid, High) compatible to each other. For WLAN the user has
to configure compatible RF channels.
Frequencies Stegos / WLAN
Stegos WLAN
Channel Centre frequency Channel . . . . . . . . . . . Centre frequency
Low 2412 MHz 1. . . . . . . . . . . . . . . . . . 2412
2. . . . . . . . . . . . . . . . . . 2417
3. . . . . . . . . . . . . . . . . . 2422
4. . . . . . . . . . . . . . . . . . 2427
5. . . . . . . . . . . . . . . . . . 2432
Mid 2438 MHz 6. . . . . . . . . . . . . . . . . . 2437
7. . . . . . . . . . . . . . . . . . 2442
8. . . . . . . . . . . . . . . . . . 2447
9. . . . . . . . . . . . . . . . . . 2452
10. . . . . . . . . . . . . . . . . 2457
High 2464 MHz 11. . . . . . . . . . . . . . . . . 2462
12. . . . . . . . . . . . . . . . . 2467
13. . . . . . . . . . . . . . . . . 2472
14. . . . . . . . . . . . . . . . . 2484
You can easily recognise that the individual WLAN channels overlap considerably due to their bandwidth. All neighbouring channels (e.g. channel 1 & 2 or channel 7 & 8) cannot be used simultaneously,
because they would disturb each other. Furthermore, channel 12 and 13 are not approved for the use
in the USA. In general, these channels are not used either. Within the remaining frequency bands only
the WLAN channels 1, 6 and 11 can be used simultaneously.
Stegos – WLAN
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For this reason the WLAN channels 1, 6 and 11 were selected for the RF channels Low, Mid and High
used for the Stegos system. Due to this frequency compatibility the Stegos system is operated WLANfriendly.
Due to careful frequency planning it is possible to operate one Stegos receiver and a maximum of two
WLAN devices nearby simultaneously.
More tips for installation
• Keep a minimum distance of approx. 5 m between WLAN or WiFi devices (e.g. Router, Repeater) and
the transmitting and receiving antennae of the Stegos RS receiver.
• If possible, deactivate all WLAN interfaces of laptops using the same frequency range as Stegos.
• The distance between the WLAN or WiFi and Stegos channels should be as large as possible.
• The channels of the Stegos system can be selected with the supplied Stegos software.
8.3 Stegos and Bluetooth
• Bluetooth devices make use of the whole 2.4 GHz range with changing carrier frequencies (frequency
hopping).
• Interferences caused by Bluetooth devices (including microwave ovens) in normal operation can be
excluded due to different measures inside the Stegos system and an advanced transmission protocol.
• It cannot be excluded, however, that an exisisting Bluetooth data traffic will be intefered by Stegos.
8.4 Example for Stegos, media control systems and WLAN
The 2.4 GHz technology is used for many applications in discussions and meetings. In addition to a
wireless discussion system other functions (light or volume control etc.) are operated via a wireless
2.4 GHz touch screen of a media control system. Furthermore, the participants of a meeting often have
direct internet access via a WLAN access point.
The Stegos system and WLAN make use of compatible transmission standards. This should be considered
when also using a media control system with a touch screen. State-of the-art devices correspond to the
WLAN standard.
1. Configure the Stegos system to the RF channel “Low”. The Stegos system then makes use of the
frequency range of 2401 to 2423 MHz. This frequency range must be reserved for the Stegos
exclusively.
2. Configure the touch screen of the media control system to the frequency range of 2426 to
2448 MHz. This corresponds to the WLAN channel 6. This frequency range must be reserved for the
use of the touch screen exclusively.
3. Configure the WLAN access point to WLAN channel 11 making use of the frequency range 2451 to
2473 MHz. This frequency range must be reserved for the use by WLAN exclusively.
Stegos – Technical Specifications
21
9. Components
Stegos TB Wireless condenser boundary microphone, semi-cardioid,
black, 128bit encryption, integrated antennae,
rechargeable battery pack and operating/status indicators,
with mains charger adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Order # 721.360
Stegos RS Digital diversity receiver, 4 channels, 19" metal housing,
1 U, 128bit digital encryption, RS 232, USB port,
with Stegos software and 2 x CA 2411 angled rod antennae. . . . . . . . Order # 721.379
10. Technical specifications
General
Frequency range . . . . . . . . . . . . . . . . . . . 2400 – 2483.5 MHz (ISM Band)
Bandwidth . . . . . . . . . . . . . . . . . . . . . . . 22MHz
Modulation. . . . . . . . . . . . . . . . . . . . . . . Direct Sequence Spread Spectrum DSSS
Transmission protocol . . . . . . . . . . . . . . . Digital signal processing acc. to own standard,
128 bit encryption
Max. number of audio channels . . . . . . . 4 usable channels per system
Signal-to-noise ratio . . . . . . . . . . . . . . . . 80 dB (digital transmission network)
Transmitter power. . . . . . . . . . . . . . . . . . max. 20 dBm
Range between TB and RS . . . . . . . . . . . > 100 m (328 ft) at line of sight
Approval. . . . . . . . . . . . . . . . . . . . . . . . . world-wide
Stegos TB boundary microphone
Transducer type . . . . . . . . . . . . . . . . . . . Condenser (back electret)
Operating principle . . . . . . . . . . . . . . . . . Pressure gradient
Polar pattern. . . . . . . . . . . . . . . . . . . . . . Semi-cardioid
Frequency response . . . . . . . . . . . . . . . . 20 Hz – 12 kHz
Dynamic range . . . . . . . . . . . . . . . . . . . . 68 dB (A-weighted)
Open circuit voltage . . . . . . . . . . . . . . . . 300 mV/Pa
Max. SPL at 1 kHz. . . . . . . . . . . . . . . . . . 100 dB SPL
RFI proof. . . . . . . . . . . . . . . . . . . . . . . . . Scudio™ technology
Power consumption . . . . . . . . . . . . . . . . approx. 100 mA (microphone open)
Power supply . . . . . . . . . . . . . . . . . . . . . 4.8 VDC via integrated NiMH rechargeable batteries
(4 cells, each with 2100 mAh)
Operating time . . . . . . . . . . . . . . . . . . . . 14 hours at least;
DC powered permanent operation possible with
CA 2458 mains charger adapter
Charging time with power
supply unit (15 VDC, 1.6 A) . . . . . . . . . . max. 2 hours
Temperature range
(at < 90% humidity) . . . . . . . . . . . . . . . . +10 °C – +40 °C (+50 °F – +104 °F)
Storage temperature
(at < 90% humidity) . . . . . . . . . . . . . . . . -20 °C – +55 °C (-4 °F – +133 °F)
Dimensions (L x W x H) . . . . . . . . . . . . . . approx. 138 x 76 x 38 mm (5.4 x 3 x 1.5 in)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . approx. 410 g (0.9 lbs)
Stegos – Technical Specifications
22
Stegos RS receiver
Connections (on the rear)
Balanced, per channel (+6 dBu) . . . . . . . Phoenix terminals (4x3)
Balanced, Mix Signal
(+6 dBu/-10dB switchable) . . . . . . . . . . . Phoenix terminals / XLR (male) / mini jack (3.5 mm)
Monitor headphone output . . . . . . . . . . 1/4" jack (6.35 mm)
Media control / Service . . . . . . . . . . . . . . RS 232, 57.6 kbps, 8-N-1
Media control / PC . . . . . . . . . . . . . . . . . USB, type B (on the front)
Tx/Rx and Rx antennae . . . . . . . . . . . . . . 2 N(HF)-connectors (socket)
Power connection. . . . . . . . . . . . . . . . . . IEC power connection, incl. power cable 1.5 m (4,9 ft)
Power supply unit
Voltage supply . . . . . . . . . . . . . . . . . . . . 100 – 240 VAC, 50/60 Hz
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 A, slow-blow
Power consumption . . . . . . . . . . . . . . . . typ. 3 W, max. 5 W
Indicators (on the front)
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . LED (green)
Channel (active/occupied) . . . . . . . . . . . . 4x LED (green/red))
Frequency range . . . . . . . . . . . . . . . . . . . 3x LED (green)
Monitor selection (Channel / Mix) . . . . . . . 5x LED (green)
Controls (on the front)
Standby microphones . . . . . . . . . . . . . . . Push-button
Selection RF band . . . . . . . . . . . . . . . . . . Countersunk push-button
Volume control monitor-headphone
with monitor channel selection . . . . . . . . Rotary potentiometer with push-button
General
Temperature range
(at < 90% humidity) . . . . . . . . . . . . . . . . +10 °C – +50 °C (+50 °F – +122 °F)
Storage temperature
(at < 90% humidity) . . . . . . . . . . . . . . . . -20 °C – +55 °C (-4 °F – +131 °F)
Dimensions (L x W x H) . . . . . . . . . . . . . . 19", 1 U (238 x 450 x 44mm / 9.4 x 17.7 x 1.7 in)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 kg (5.5 lbs)
Stegos – Technical Specifications
23
Stegos RS receiver
Dimensions
All dimensions in mm and [inch]
Stegos – Technical Specifications
24
Stegos TB boundary microphone
All dimensions in mm and [inch]
Dimensions
Stegos – EC Declaration of Conformity
25
EC-DECLARATION
OF
CONFORMITY
Application of
Council Directive: 1999/5/EC
R&TTE Directive
2004/108/EC
Electromagnetic Compatibility
2006/95/EC
Low Voltage Directive
Standards to which EMC EN 301 489-1 V1.8.1
Conformity is declared: EN 301 489-17 V1.3.2
Radio Spectrum EN 300 328 V1.7.1
Safety EN 60 950-1
Manufacturer’s Name: beyerdynamic GmbH & Co. KG
Manufacturer’s Address: Theresienstrasse 8, 74072 Heilbronn, Germany
Type of Equipment: Digital Wireless Microphone System
Model Number/s: Stegos TB, Stegos RS
I, the undersigned, as an employee of beyerdynamic, hereby declare that the equipment
specified conforms to the above Directive and Standards.
Manufacturer’s Signature:
Date: August 1st, 2010
Full Name: Ulrich Roth
Position: Director of R&D
0682 !
Stegos – FCC Regulation
26
FCC Regulation
FCC ID: OSDSTEGOSTB for Stegos TB
FCC ID: OSDSTEGOSRS for Stegos RS
Canada: IC: 3628A-STEGOSTB for Stegos TB
Canada: IC: 3628A-STEGOSRS for Stegos RS
Part 15.19 Statement
NOTICE:
This device complies with Part 15 of the FCC Rules [and with RSS-210 of Industry Canada].
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
Part 15.21 Statement
NOTICE:
Changes or modifications made to this equipment not expressly approved by (manufacturer name) may
void the FCC authorization to operate this equipment.
Part 15.105 Statement
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
RF Exposure Statement
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance of 20 cm between the radiator
and your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
E 1/BA Stegos (07.10) • Non-contractual illustrations. Subject to change without notice. • Printed in Germany
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 7131 / 617 - 0 | Fax +49 (0) 7131 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
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