14 • DM NVX System Design Guide – DOC. 7977F
Example of Bidirectional Bandwidth under 1 Gbps
An encoder that attempts to send 900 Mbps video and 480 Mbps USB 2.0 traffic
exceeds the maximum network link bandwidth of 1 Gbps and, as a result, the link will fail.
Example of Failed Link with Required Bandwidth Greater than 1 Gbps
DM-NVX-35x and DM-NVX-35xC devices support Layer 2 and Layer 3 transport of
USB 2.0 data. For Layer 2 transport, one local connection to the device port of a
DM NVX device supports up to seven remote host port connections simultaneously.
When multiple remote connections are required, a hub must be used to connect to each
remote host port. To prevent excessive USB traffic for Layer 2 support of multiple
remote connections, only one high-bandwidth USB device can be used regardless of the
number of remote connections.
For USB 2.0 Layer 3 transport, one local connection supports only one remote
connection. Layer 3 supports USB 2.0 transport of data across VLANs.
L
AN
HDMI
DM NVX™
encoder
DM NVX
decoder
Video 900 Mbps
Display
USB camera
Laptop
USB
LAN
LAN
HDMI
USB
USB 480 Mbps
LAN
HDMI
DM NVX
encoder
DM NVX
decoder
Display
Laptop
Laptop
USB
LAN
LAN
HDMI
USB
USB camera
Video 900 Mbps
USB 480 Mbps
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