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Rear Panel Features
Video Inputs
The Image Server records video on channel #1. It has separate BNC inputs for SDI (serial
digital per SMPTE 259M) and analog video (CVBS) signals. Both video inputs have a fixed 75-
ohm termination. The graphic user interface selects between the two. Encoding is performed
in MPEG-2 format within the server.
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
composite (CVBS).
Audio I/O
The Image Server provides audio inputs and outputs in three formats:
Balanced analog audio at a reference level of +4 dBu.
•
Digital audio in AES/EBU format per AES-3-2000.
•
SDI embedded audio, 4-channels
•
These multiple standards facilitate the transition from an analog studio to digital production and
broadcasting, and ensure that the server can operate with most equipment. Note that both
analog and AES/EBU audio signals are not available at the same time on a given input or
output. Internal jumpers select between analog or digital; however, each pair of inputs and
outputs can be set up differently, if desired. A set of XLR-3 connectors allows high-quality
connections to be made in either format. Embedded audio appears in the SDI output stream at
all times.
Analog Audio Capability
When the analog audio input format is selected, each video channel has two audio channels,
recorded together as a stereo pair. Internal trimmers allow adjustment to unity gain.
Digital Audio Capability
When AES/EBU digital audio is selected, each video channel has four audio channels, which
are recorded as two stereo pairs. Because a single XLR connector carries a stereo pair in
AES/EBU format, and only one (monaural) channel in analog, the server provides an extra pair
of audio channels when used with AES/EBU audio signals.
Embedded Audio Capability
When SDI embedded audio is selected, four audio channels are available for recording.
Embedded audio is always inserted in the video outputs. Note that discrete audio (analog or
AES/EBU) is also available on XLR connectors, at the same time embedded audio appears in the
video stream. Embedded audio has a 20-bit resolution.
Image Server 2000 Owner's Manual
All manuals and user guides at all-guides.com
Page 23
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