Overview - Sony Betacam SX DNW-A22 Operation Manual
Digital videocassette player
Hide thumbs
Also See for Betacam SX DNW-A22:
- Specifications (4 pages) ,
- Maintenance manual (286 pages)
Table of Contents
1-1 Overview
The DNW-A22/A22P (also referred to simply as the
unit in this manual) is a videocassette player based on
the Betacam SX format.
It can play tapes recorded in Betacam/Betacam SP
format.
The following are some of the features of the unit.
Betacam SX format
The Betacam SX format was developed as a digital
version of the Betacam SP format, and is a digital VTR
format supporting nonlinear editing systems and server
systems. Compared with analog Betacam, the
Betacam SX format reduces the tape speed to
approximately one-half. For recording in Betacam SX
format, the drum rotates at 75 revolutions per second,
allowing two frames of video data and four channels of
digital audio to be recorded in ten diagonal tracks. The
longitudinal control and time code tracks are the same
as in the analog Betacam format.
Tape transport direction
System data
Audio channels
1 to 4
Audio channels
1 to 4
System data
Control (CTL) track
Head configuration
In addition to playback heads for Betacam SX, the unit
also has analog playback heads for Betacam SP.
Digital signal processing
This unit processes digital signals conforming to 4:2:2
component digital D-1 format.
Auxiliary track
Video
Head
direction
Video
Time code track
High image quality, high audio quality,
high reliability
Even with a low data rate, playback with high image
quality and high audio quality is achieved. The unit
also has a powerful error-correcting system.
Data compression by interframe encoding
For the Betacam SX format, data is compressed by
MPEG-2 interframe encoding conforming to 4:2:2
Profile @ Main level. The data rate is reduced by a
factor of 10.
Playback compatibility with Betacam/
Betacam SP
The unit can play tapes recorded in Betacam/Betacam
SP format. This makes for efficient use of existing
material in Betacam/Betacam SP format.
Wide range of output signals
The unit can output the following signals.
• Analog video (composite)
• Analog audio (L and R)
Menu-based setup
Initial settings for the unit's operating condition, the
interfaces with connected equipment, and so forth can
be made by menu operations on the front panel of the
unit.
Wide range of indications
In addition to the LED display which shows the
operating status and current settings of this unit and
connected equipment, a fluorescent display is provided
to show numerical values including time code, user
bits, error messages, and setup menu information.
1-1
Chapter 1 Overview
Table of Contents
