Sony HDW-1800 - Manual (Page 6)

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1-1 Features
Overview
1-1 Features
The HDW-1800/D1800 is a high-definition (HD) digital
videocassette recorder based on the HDCAM format.
This unit uses large scale integrated circuits for signal
processing, and has a simple internal construction,
allowing it to provide functionality at least equivalent to a
conventional VTR in a compact (4U size), lightweight, and
low power consumption design.
In addition to HDCAM format recording and playback, the
HDW-D1800 can also play back tapes recorded in the
Digital Betacam and MPEG IMX formats.
HDCAM format
The HDCAM format uses the same 12.65-mm width tape
as the conventional Betacam series. It provides high
definition images, offering up to two hours of recording.
For video signal compression, prefiltration and coefficient
recording technologies are used.
High-performance heads and compatibility
functions
The newly developed high-performance heads and
dynamic tracking (DT) technology provide high-density
recording and playback in narrow tracks with high
reliability. The VTR automatically detects the recording
format of tapes when they are loaded, so that no menu
settings need to be made when changing formats.
High-precision digital signal processing
and range of interfaces
Digital signal processing uses HD 4:2:2 component video
signals complying with SMPTE 292M, which are
converted into parallel data and then compressed into
HDCAM format.
The audio signals are based on the AES/EBU format, and
are subjected to digital signal processing without being
compressed.
The unit is equipped with a high definition to standard
definition (HD-to-SD) downconverter, and has the
following interfaces for ease of connection to different
external devices.
• SD analog composite signal output
• Analog audio signal input/output (2 channels)
• HDSDI SMPTE 292M input/output (HD digital video/
audio, 4/8 channels)
• SDI SMPTE 259M output (component digital video/
audio, 4/8 channels)
• AES/EBU serial digital audio input/output (4 channels
for input, 4/8 channels for output)
• Timecode input/output
High-quality four-channel audio
High-quality 20 bit/48 kHz digital audio is supported in the
HDCAM format and there are four digital audio input/
output channels.
The HDW-D1800 also supports 4-channel digital audio
playback in the Digital Betacam format and a maximum of
8-channel digital audio playback in the MPEG IMX
format.
Direction of tape travel
Video
Control (CTL) track Timecode track
a) Supplemental Automatic Tracking signal
Audio
Video
Direction of head
motion
SAT a)
CUE track