Sony DSR-80 - Manual (Page 3)

Features
The DVCAM Recording
Format - Digital Recording
for the Next Generation
The DSR-80 and the DSR-60 offer superb picture quality,
multi-generation capability and production flexibility thanks to
the adoption of the new DVCAM digital recording format, which
has been developed by Sony for professionals working in the
digital environment.
Playback Compatibility with Home-Use “DV”
Format
The DVCAM digital recording format for video professionals is
an extension of the consumer DV format. Therefore, it maintains
playback compatibility with consumer DV recordings and has
the advantage that both standard and mini cassettes can be
used in the same machine.
By maintaining a wider track pitch, the DVCAM format ensures
high reliability for the professional editor.
The DVCAM Component Digital Recording
Format
The DVCAM format uses 8 bit component digital recording
with a 5:1 compression ratio and sampling at the rate of 4:1:1 to
provide superior picture quality and multi-generation capability.
The DVCAM format employs an intra frame compression
scheme which is ideal for editing applications. Based on DCT
(Discrete Cosine Transform) techniques, each frame consists of
10 tracks. Each track has ITI (Insert and Track Information),
Audio, Video, and sub code areas. The ITI, which is a
reference signal used for precise tracking, and Time Codes on
the sub code area assure highly accurate editing performance.
This technique provides much greater operational flexibility for
complex multi-layering.
High Quality Digital Audio
The DSR-80 and the DSR-60 provide two selectable audio
channel modes, two channels and four channels.
In order to ensure superb audio performance with a wide
dynamic range and an excellent signal-to-noise ratio, the PCM
(Pulse Code Modulation) digital stereo recording system is
used in both modes; 2CH of 16 bit, 48kHz sampling frequency
and 4CH of 12 bit, 32kHz sampling frequency.
Excellent Performance by the Professional
DVCAM Tapes
To gain maximum performance from high density digital
recording, new Advanced Metal Evaporated cassette tapes
have been developed for the DVCAM format. The result is
superior recording quality which is achieved by increasing the
RF video output by +4.5dB compared to that of Hi8
® metal
evaporated tape. Higher durability is also ensured for
professional editing applications by enhancing protection with
DLC
TM (Diamond Like Carbon) coating. Each cassette has a
16kbit IC memory, which stores data to enhance editing
efficiency. Two cassette sizes are available; DVCAM Standard
size cassette provides a maximum recording time of 184
minutes (PDV-184ME) and the DVCAM
Mini size cassette records up to 40
minutes (PDVM-40ME).
High Efficiency
in the Editing Environment
SDTI(QSDI) Digital Interface
The DSR-80 is equipped with a SDTI(QSDI) interface, while
this interface is available with the DSR-60 as an option
(DSBK-110 QSDI Output Board), which handles compressed
video as well as Sub Code data and digital audio signals of the
DVCAM recording format. The SDTI(QSDI) interface allows
degradation-free transfer of both video and audio signals
between the DSR VTRs and between the VTRs and a Sony
EditStation
TM in a nonlinear editing system.
ClipLink Operation
The ClipLink system is a comprehensive data management
system of the shooting information which is necessary for the total
digital production process, ranging from acquisition to editing.
Incorporated into Sony DVCAM cassettes is an IC memory chip
which holds shot list information, called a ClipLink Log Data.
When the cassette is loaded into the DSR-80 or the DSR-60, the
ClipLink Log Data is uploaded into the Sony EditStation system for
immediate viewing of the images on the GUI (Graphical User
Interface) screen before actually being recorded onto the hard
drive. Then only the selected clips on the GUI screen may be
uploaded for time and space-saving efficiency of the hard drive.
Thus, both the DSR-80 and the DSR-60 perform highly effective
roles, when integrated into a nonlinear editing system with such as
Sony’s EditStation system.
Full Tape Dubbing with ClipLink Log Data
The DSR-80 has a full tape dubbing function which allows
you to make a dub of the recorded DVCAM tape information
(video/audio/sub code) along with the ClipLink Log Data in the
memory IC contained in the DVCAM cassette tape. The
dubbing is accomplished by operating the menu button on the
subcontrol panel via the SDTI(QSDI) interface and the RS-422A.
Tape Direction
Sub Code
ITI: Insert and Track Information
Head Direction
Video
Audio
6.35 mm
(1/4 inch)
ITI
<IC memory>