Features - Sony Betacam SX DNW-A65 Operation Manual

1-1 Features

The DNW-A65/A65P is a digital videocassette player,
based on the Betacam SX format.
This unit not only offers digital playback, but can also
play back tapes recorded in the conventional analog
Betacam format.
The following are some of the features of the system.
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. The drum rotates at 75
revolutions per second, recording two frames of video
data and four channels of digital audio 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 digital playback heads for Betacam SX,
the unit also has analog playback heads for Betacam
SP. There are eight digital playback heads in total.
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
Betacam SX format VTRs performs data compression
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
This 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
You can use the following wide range of output
signals.
Signals Standard or option
Analog video Fitted as standard
(composite and component)
Analog audio Fitted as standard
(4 channels)
AES/EBU digital Fitted as standard
audio
a)
SDI video/audio Fitted as standard
b)
SDTI video/audio Option (BKNW-118/BKNW-
124)
Time code Fitted as standard
a) Serial Digital Interface
b) Serial Data Transport Interface
c) Either the BKNW-118 or the BKNW-124 can be
attached for SDTI signal output.
c)
1-1
Chapter 1 Overview