RADVision SCOPIA VC240, Руководство пользователя

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The 720p High Definition (HD) fixed camera has a native resolution of 1280 x 720
pixels at 30 frames per second. The fixed (non zoom) lens offers a horizontal
viewing angle of 58.4 degrees which provides an acceptable image for two
conference participants. The camera has a manual tilt facility and together with the
picture monitors pan, tilt and elevation adjustments permits a reasonable viewing
position to be obtained.
Remote camera zoom control is listed as a feature but was not functioning with
other vendors’ products. RADVISION confirmed that this feature is to be supported
in later software versions
A PC may be directly connected to the CODEC via the DVI-D or the analogue
VGA inputs. The set up menu selects the appropriate connection. The DVI input
does not support High Definition Content Protection (HDCP.
The following PC resolutions and frame rates are supported.
At an aspect ratio of 4x3
800 x 600 at 56Hz, 60Hz, 72Hz, 75Hz
1024 x 768 at 60Hz, 70Hz, 75Hz
1280 x 1024 at 60Hz, 75Hz
At an aspect ratio of 16x9
1280 x 800 at 60Hz
1440 x 900 at 60Hz, 75Hz
1600 x 900 at 60Hz
1680 x 1050p at 60Hz
1920 x 1080p at 60Hz
H.239 dual video coding provides a second unidirectional video channel during
H.323 calls, but without a dedicated second audio channel, to allow simultaneous
transmission of the participants and PC material. The bandwidth is shared between
the PC channel and the camera video in a fixed ratio with the majority of the
bandwidth allocated to the camera channel.
When presentation material is transmitted the resolution and frame rate of the main
and second video channels depends on the overall connection bandwidth. Below
256 Kbit/s PC material is not transmitted at all. At connection bandwidths below
1Mbit/s the system protects the resolution of the presentation (PC) channel at 720p
while reducing the resolution of the main video channel.