Sony DSR-1800A, Брошюра

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02
INTRODUCTION
Main Features
The DVCAM Format
Digital Component Recording
for Excellent Picture Quality
The DVCAM format is the professional extension of the
worldwide standard DV format. The DVCAM format uses 8-bit
digital component recording with a 5:1 compression ratio and a
sampling rate of 4:1:1 (for NTSC) / 4:2:0 (for PAL). The unique
compression algorithm provides excellent picture quality and
superb multi-generation performance. The DVCAM format has
a wider track pitch of 15 μm (compared with 10 μm for the DV
format) which gives higher reliability for professional editing.
It also offers superior digital audio performance, providing a
wide dynamic range and excellent signal-to-noise ratio,
comparable to CD
quality. Alternative
audio channel
modes can be
selected: a two-
channel mode
with 48 kHz/16-bit
recording or a
four-channel mode
with 32 kHz/12-bit
recording.
Excellent Performance
from Professional DVCAM Tapes
To gain maximum performance from high-density digital
recording, advanced Metal Evaporated tape technology has
been developed for the DVCAM format. The use of Sony’s pure
cobalt advanced evaporated coating gives both high output
and a high C/N (Carrier-to-Noise) ratio, resulting in superb
quality pictures and a low error rate.
A DLC (Diamond Like Carbon) protective layer provides the
enhanced protection to the tape surface that is essential to
avoiding tape damage during long editing sessions. Finally,
DVCAM tapes provide a low frequency of dropout and superb
thermal stability.
A variety of cassettes, including tapes with IC Cassette Memory
and Master Tapes, is available to suit different applications. The
built-in 16-kbit Cassette Memory stores, Index Pictures, Photo
mode and other shooting data, enhancing editing efficiency.
Tapes without IC Cassette Memory fit a wide range of
applications, with an affordable price. The Master Tapes, which
use Sony Hyper Evaticle II Magnetic
Particle technology to provide higher
output and lower noise, are suitable
for high-speed data transfer
applications as well as for making
master recordings.
Recording Capability of Up to Three Hours
DVCAM cassette tapes are available in two sizes: standard and
mini. The standard-size cassette provides a recording time of
up to 184 minutes, while the
mini-size cassette provides up to
40 minutes. These long
recording times are achieved in
very compact cassettes with a
1/4-inch (6.35 mm) tape width.
Mini-size
cassette
Standard-size
cassette
(simulated images)