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A

PPLICATIONS

The NE 900 D Cobra 2-channel receiver of the Opus 900 
wireless system provides an integrated CobraNet interface, which
allows connecting the receiver to all CobraNet capable devices of
more than 40 manufacturers. The transmission is via CAT.5 cables
via standard Ethernet for a flexible positioning of the receiver in the
room. Furthermore, analogue inputs are saved and therefore, costs
for the subsequent audio matrix systems. 

The CobraNet technology allows transmitting up to 32 
channels into each direction with a single 100-Mbit network cable.
As signals can be sent from any node, maximum flexibility is
achieved. Settings can quickly be changed via software without
changing the cabling. The digital transmission via CobraNet is less
interference-prone as the analogue transmission, ensuring a high
sound quality even with long distances. 

The NE 900 D Cobra operates in the frequency bands 668 to 
692 MHz and 774 to 798 MHz. The TV channels provide 100 pre-
programmed frequencies. A maximum of 16 frequencies can be
operated simultaneously without any interference.

By using the SCAN function an automatic channel search is started
and with the ACT function (Automatic Channel Targeting) the 
discovered frequency is transmitted to the transmitter via infra red.
The frequency can also be selected manually.

The menu control is used to access and set the individual 
parameters. The colour display shows all parameters such as RF and
AF level, diversity channel, battery status of the transmitter as well
as all menu settings such as frequency, group, channel, squelch,
output level, user name and address. 

A sophisticated adjustable squelch system prevents unwanted noise
effectively. The pilot tone-controlled AF mute suppresses inter-
ferences and mutes the receiver when the appropriate transmitter
is switched off.

F

EATURES

• Integrated digital 2-channel audio interface
• CobraNet network protocol
• Compatible with other CobraNet devices
• Professional audio quality via standard Ethernet
• Connection via standard CAT.5 cables
• Transmission of a word length of 20 or 24 bits
• Supports a latency period of 1 1/3 ms, 2 2/3 ms and 5 1/3 ms

Front view

• Colour display
• CobraNet LEDs
• Menu control for selecting and setting
• On/off switch with power on LED
• SCAN function for automatic channel search
• ACT function (Automatic Channel Targeting) to transmit the

frequency to a transmitter automatically

• Monitoring/headphone output with volume control and 

channel changeover switch

• Mounting bracket for installing the antennae on the front

Rear view

• Removable TNC antennae
• Antenna inputs (TNC socket) with power supply for 

antenna amplifiers

• AF output, 3-pin XLR, balanced
• Interface to connect PCs or laptops operating with 

Windows

® 

2000 or XP

• CobraNet interface 

beyerdynamic GmbH & Co. KG 
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
[email protected] | www.beyerdynamic.com

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/NE 900 D Cobra (06.11)

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V

ERSIONS

NE 900 D Cobra CobraNet interface 

with true diversity receiver, 
668 - 692 MHz . . . . . . . . . . Order # 488.232

NE 900 D Cobra same as above, but frequency band

774 - 798 MHz . . . . . . . . . . Order # 488.240

Front view

Rear view

NE 900 D Cobra

UHF Diversity Receiver with
CobraNet Connector

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