Sennheiser evolution D1, Системное руководство

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Putting the products into operation
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Connect a standard network cable (at least Cat 5) to the LAN Ethernet
socket of your receiver.
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Connect your receiver to the Ethernet switch or the dual-band WiFi router.
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Connect either a computer to the Ethernet switch or connect the computer
or the mobile devices to the WiFi router.
The yellow LED at the rear of the receiver indicates the connection status.
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Use a strong password and a strong encryption algorithm to protect your
WiFi or your router against unauthorized access.
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Deactivate the WiFi router‘s 2.4 GHz frequency band in order to minimize
interference to the radio links.
To update the firmware of your devices:
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Establish an Internet connection with your mobile device or computer to
download the current firmware.
Connecting the receiver to the power supply system
Only use the supplied power supply unit (NT 12-4C or NT 2-3). It is designed
for your receiver and ensures safe operation.
If you use the NT 2-3 power supply unit:
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Slide the supplied country adapter onto the power supply unit.
To connect the power supply unit:
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Pass the cable of the power supply unit through the cable grip as shown on
the left.
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Connect the hollow jack plug of the power supply unit to the DC IN socket
of the receiver.
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Plug the power supply unit into the wall socket.
Yellow LED … Connection status
... lit The receiver is connected to the network.
... off The receiver is not connected to the network.
NT 2-3 NT 12-4C