360 Systems V2000 Series, Руководство по эксплуатации

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Hardware Interface
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Rear Panel Features
Video Inputs
The Image Server provides a single video input channel. This channel includes separate BNC
inputs for serial digital (“SDI” per SMPTE 259M) and analog video (CVBS) signals. The On-
Screen graphic user interface allows selection between the two. Encoding to MPEG-2 format is
performed within the server. Video inputs have a fixed 75-ohm termination.
Video Outputs
Video outputs are provided in SDI and Composite (CVBS) formats simultaneously. Digital
video appears in SDI format at 270 Mb/s and conforms to SMPTE 259M. Analog video is in
conventional composite (CVBS) format.
Video Output 1 can superimpose time code over picture as a “window burn.” This feature is
available only on the CVBS video output, and is enabled through the On-Screen graphic user
interface.
Audio I/O
The Image Server can provide audio inputs and outputs in two formats:
•
Analog audio at an industry-standard reference level of +4 dBu
•
Digital audio in AES/EBU format per AES-3-2000
This dual standard facilitates the transition from an analog studio to digital broadcasting, and
assures that the server can operate with virtually any other equipment. Note that both
analog
and digital audio are not available at the same time on any given input or output. Internal
jumpers select between analog or digital; however, input and output can be set up differently,
if desired. A set of XLR-3 connectors allows high-quality connections to be made in either
format.
Analog Audio Capability
When the analog audio input format is selected, each video channel has two audio channels
which are recorded together as a stereo pair. Trimmers allow exact adjustment to unity gain.
Digital Audio Capability
When the digital audio format is selected, each video channel has four audio channels,
which are recorded as two AES/EBU
stereo pairs. Because a single XLR connector carries a
stereo pair of audio channels in digital format, and only one (mono) channel in analog, the
server can provide an extra pair of audio channels when used with digital audio signals.
Audio Word Size and Sample Rate
The Image Server employs 24-bit audio A/D and D/A converters, and records audio into a
24-bit frame, regardless of the word size received. The sample rate is fixed at 48K.