Beyerdynamic MCW-D 521 User manual

F EATURES
• Direct Sequence Spread Spectrum (DSSS) provides high immunity from interference and unauthorised listening
• Wireless transmission with integrated transmitting/receiving antenna in the 2.4 GHz frequency band which is approved world-wide
• Digitally encoded audio signals prevent unauthorised listening
• Integrated loudspeaker with voice equalisation
• Gooseneck microphone provides excellent audio quality
• Red illuminated ring around the gooseneck to indicate the ready-to-talk status of the microphone
• Microphone button to switch the microphone on / off or to register it in the system
• Dual colour LED for microphone ON (red: communication is established; green: microphone is switched on and ready for talking)
• DC-connection for DC-operation and battery charging
• Charging contacts
• Power on LED
• Mini stereo jack (3.5 mm) as documentation output for the connection of recorders, PCs with the steno-s recording software etc.
• High-quality plastic housing with charcoal-grey, non-glare and scratch-resistant Nextel®finish
• The following parameters can be programmed: loudspeaker level, auto-off behaviour and voice-controlled activation
• Auto-Off function when nobody speaks into the microphone
• Fixed ducking level of -15 dB for the loudspeaker when the microphone is activated
• Microphone unit can be programmed by using the configuration software with the control unit
• APO function for Automatic Power OFF when the control unit is in the stand-by mode or switched off
• Processor-controlled charging electronics to prevent the “memory effect” of the battery
• Reliable charging electronics ensures immediate use of the microphone units
• LED ring of the gooseneck microphone indicates charging status
• Maximum charging time of 2 hours when the battery (NiMH) is completely empty
• Operating time approx. 20 hours
W IRELESS , DIGITAL
D ELEGATE
M ICROPHONE U NIT
MCW-D 521
WITH L OUDSPEAKER
Order # 479.748
Germany
Theresienstr. 8
D-74072 Heilbronn
Tel. [phone] / 6 17-0
Fax [phone] / 617-224
E-mail: [email protected]
Internet: www.beyerdynamic.de
United States
56 Central Ave.
Farmingdale, NY 11735
Tel. [phone]
Fax [phone]
E-mail: [email protected]
Internet: www.beyerdynamic.com
Great Britain
17 Albert Drive
Burgess Hill RH15 9TN
Tel. [phone] / 258 258
Fax [phone] / 258 444
E-mail: [email protected]
Internet: www.beyerdynamic.co.uk

D ESCRIPTION
The MCW-D 521 delegate microphone unit is equipped with a microphone button in the housing with which the participant can
switch his microphone on and off. With the Automatic Channel Allocation function the transmitting channels of the microphone units
are allocated automatically. When the microphone button is pressed in the manual operating mode the request-to-talk is received by
the control unit (a possible external dual colour LED will illuminate red). Then the control unit checks which of the available receiving
channels is free. Then the control unit informs the microphone unit which channel it should use for transmitting. When the channel
of the microphone unit is set and checked by the control unit, the microphone is switched on (dual colour LED changes from red to
green). The ready-to-talk status of the microphone is also indicated by the red ring around the gooseneck microphone. In the Request-
to-Talk-mode of the discussion system the request-to-talk is received, but the microphone is not switched on. The red LED indicates
that the request-to-talk has been received. The microphone is switched on by the operator at the PC by using the “MCW-D 50
Conference” software or a media control system. When the microphone button is pressed once again, the delegate clears his/her
request-to-talk.
Depending on the configuration with the “MCW-D 50 Conference” software the following operating modes are available:
Override: the first microphone is switched off, when the maximum number of switched on microphones is exceeded.
Voice activation: the microphone is switched on, when someone speaks into it.
Push-To-Talk: the microphone button is held down, while the participant is speaking.
The integrated loudspeaker reproduces the audio signal of the whole conference system. Depending on the audio signal routing in
the control unit the loudspeaker can reproduce other audio signals such as a wireless microphone in the auditorium.
The parameters of the microphone unit are adjusted via PC by using the “MCW-D 50 Conference” software. The parameters are
adjusted for all microphone units.
If a participant forgets to switch off his/her microphone and if nobody speaks into the microphone, the “Auto-Off” function switches
the microphone off. The time when the “Auto-Off” function will be activated and the sensitivity can be configured. The output level
of the headphone connection can be set for recording level for documentation or for headphone level. The volume of the loud-
speaker is adjusted and can be controlled with the MCW-D 50 control unit or a media control system. The ducking level determines the
attenuation of the loudspeaker level when the microphone of the microphone unit is switched on. Each microphone unit has its own
address. An existing system can be complemented at any time.
The DSSS-transmission provides high immunity against unauthorised listening. In addition to this, a conference system including the
appropriate microphone units can be protected with an 8-digit alphanumeric code. A microphone unit that does not have the correct
code will be identified by the control unit and switched off immediately.
The integrated rechargeable battery allows an operation of the microphone unit for approx. 20 hours depending on the amount of
participation in the discussion. As soon as the remaining battery time is below a certain threshold of 1 hour, the power on LED on the
rear of the microphone unit will flash or if the system is controlled by PC or a media control system, the low battery capacity can be
also indicated. The charging time of a completely empty battery is around 2 hours with the integrated processor-controlled charging
electronics. Depending on the use of the microphone unit the charging time can be less.
As an option the microphone unit can be powered and charged by a DC power supply adapter.
The microphone unit is switched on by briefly pressing the microphone button once. There are various ways to switch off the micro-
phone unit:
1. Press the microphone button for 3 seconds.
2. Press the standby button of the MCW-D 50 control unit for 3 seconds to switch off all activated microphone units.
3. Switch off all microphone units via an RS 232 or TCP/IP command from the PC or media control system.
4. Switch off the control unit; after approx. 3 minutes the microphone unit will be switched off.
E3/beyerdynamic MCW-D 521 (10.05)
A RCHITECT ’ S S PECIFICATIONS
Digital wireless delegate unit with one button to switch the microphone on/off or to register the request to talk. DSSS modulation (Direct
Sequence Spread Spectrum) ensures high immunity from interference. World-wide approval for the 2.4 GHz frequency band.
Integrated loudspeaker with voice equalisation for decentralised sound reinforcement. ACA - Automatic Channel Allocation via integrated,
digital transceiver. Dual colour LED: green indicates switched on microphone; red indicates a request-to-talk. Cardioid condenser
gooseneck microphone (back electret). Gooseneck length: 400 mm; gooseneck diameter: 6 mm. Illuminated ring to indicate the ready-
to-talk condition. Using the configuration software with a PC it is possible to adjust and configure the volume of the loudspeaker,
threshold for voice activation and auto-off-switching. Integrated rechargeable NiMH battery ensures an operating time of approx. 20
hours. Processor-controlled charging technology for a charging time of 2 hours without memory effect. The battery is monitored by the
control unit and an LED indicates when the capacity is too low. 2 charging contacts. Mini jack socket (3.5 mm) as documentation or
headphone output. DC-connection for recharging the battery or powering the microphone unit with an external power supply unit.
High-quality plastic housing with charcoal-grey, non-glare and scratch-resistant Nextel®finish. Integrated antenna.
Dimensions (Width x Height x Depth) 156.5 x 52 x 191 mm. Weight: 1.7 kg
Manufacturer: beyerdynamic
Type: MCW-D 521

O PTIONAL A CCESSORIES
CA 2475 Microphone stand, 3/8", adjustable height 870 - 1575 mm, with heavy base plate and
plate where to place MCW-D or MCS microphone units, basalt grey . . . . . . . . . . . . . . . . . . . . . Order # 472.212
CA 2457 Charger/DC power supply unit for MCW-D 5** microphone units. . . . . . . . . . . . . . . . . . . . . . . . Order # 479.721
E3/beyerdynamic MCW-D 521 (10.05)
T ECHNICAL
S PECIFICATIONS
General
Frequency range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2400 - 2483.5 MHz (ISM-band)
Modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct Sequence Spread Spectrum DSSS, digital signal processing acc.
to own standard
Max. number of audio streams . . . . . . . . . . . . . . . . . 9 useable channels per system
Signal-to-noise ratio . . . . . . . . . . . . . . . . . . . . . . . . . . 80 dB typ., (unweighted signal-to-noise ratio)
Range between microphone units
and control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 100 m
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 - 240 V AC 50/60 Hz
Approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . world-wide
Microphone Units
Transmitter power . . . . . . . . . . . . . . . . . . . . . . . . . . . max. 15 dBm per channel (average, duty cycle ≤30%)*
Battery voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 NiMH cells, 1600 mAh
External DC operation . . . . . . . . . . . . . . . . . . . . . . . . 18 V DC (±0.5 V), residual hum < 20 mV, 400 mA
Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wide-band, integrated loudspeaker
Volume decrease when Mic On (“Ducking”) . . . . . . . 15 dB fixed setting
AF output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Documentation output, unbalanced jack socket (3.5 mm, stereo)
Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tip = AF+
Ring = AF -
Shield = ground
Output level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . max. 2.4 V rms on open circuit, T.H.D. < 1%
2.3 V rms at 80 Ωload, T.H.D. < 1%
Min. impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 Ω
Integrated limiter against clipping. . . . . . . . . . . . . . . cannot be switched off
Limiter activity at . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 dB SPL
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.6 V with integrated NiMH battery (8 cells)
Operating time depending on the type of
the microphone unit . . . . . . . . . . . . . . . . . . . . . . . . . approx. 20 hours in discussion mode;
operating time depends on the volume
Temperature range. . . . . . . . . . . . . . . . . . . . . . . . . . . +10° - +40°C (at < 90% humidity)
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . -20° - +55°C (at < 90% humidity)
Dimensions (without microphone). . . . . . . . . . . . . . . Length: 191 mm
Width: 156.5 mm
Height: 52 mm
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7 kg
*The transmitter power can differ from this value due to specific regulations in various countries.
AF

Measured in mm
SHM 214 C 03 M ICROPHONE P OLAR P ATTERN
E3/beyerdynamic MCW-D 521 (10.05)
D IMENSIONS C ASING
Top View

D IMENSIONS C ASING
Measured in mm
Rear view
Lateral view
Charging contacts
DC connection
Operating
control LED
Mini stereo jack for the
connection of recorders
or headphones
E3/beyerdynamic MCW-D 521 (10.05)

E XPLODED V IEW
E3/beyerdynamic MCW-D 521 (10.05)
Non-contractual illustrations. Subject to change without notice.