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Technical Information
Fi) (High Eight) Video
System
The 8mm video system employs a metal powder tape.
This means the video recorder is capable of recording a
large amount of information and enhances picture
quality. The Hi8 video system was developed utilizing the
advantages of the 8mm video system. (See the diagrams
below.) The main characteristics of the Hi8 video system
are as follows:
Characteristics of Hi8 System
«
Super high quality picture
The information capacity is a key element for picture
improvement. It can be increased by shifting up the
FM carrier frequency range.
In the Hi8 video system,
the FM carrier frequency range of the luminance
signal is shifted up to 5.7-7.7 MHz. This is higher than
the 4.2-5.4 MHz range of the standard 8mm video
system. Consequently, the horizontal resolution is
improved to 400 lines.
Frequency allocation of the standard 8mm video system
Frequency deviation
Luminance signal
esl
2
3
4!
5:
6
7
8
743kHz
4.2MHz
5.4MHz
MHz
¢ §-VIDEO (separate luminance/chroma signal)
input/output connectors
Conventionally, the video signal exchanged between
TV set and video equipment or among several video
equipment is called a composite video signal, in which
luminance (Y) signal and chroma (C) signal are mixed.
In this system the composite video signal is liable to
produce interference, resulting in picture quality loss.
To avoid this picture quality loss, an
S-VIDEO connector can transmit and receive the video
signal separated into the luminance signal and the
chroma signal. With the separated video signal flicker
and color blur in the picture are minimized and
sharpness is enhanced to such an extent that hair and
fine stripes are clearly visible. The S-VIDEO connector
also assures an excellent editing quality with minimum
picture quality loss.
¢ Tape speed
The Hi8 video system uses the same tape speed as
the standard 8mm video system. An E6-120 (or
P6-120) allows four hours of recording and playback in
LP mode.
Recording and Playback in the
Hi8 Video System
To take advantage of the EV-S3000 Hi8 video system,
you must use Hi8 video tapes for recording and
playback.
You can use the EV-S3000 to record and playback
standard 8mm video tapes, if Hi8 quality is not
necessary. (The Video 8 and standard 8mm systems
are often referred to as "normal" mode.)
The EV-S3000 automatically detects the type of video
Frequency allocation of the Hi8 video system
system (standard 8mm or Hi8) in which the tape was
recorded and plays the tape back accordingly.
Frequency deviation
Luminance signal
——
> Gain
Chroma
vi
v4
2
3
4
5
16
7
+8
743kHz
5.7MHz
—7.7MHz
To make the most out of the Hi8 video system, select
"Hi8 AUTO" on the PICTURE ADJUST menu. In this
way, the EV-S3000 records in the HI8 video system
(see "Selecting Recording System" on page 54).
Compatibility with conventional
video recorder decks
*
Use of high grade tape to match the Hi8 video
system
Metal tape for the Hi8 video system is ideal because it
has large magnetic energy which permits high-density
recording. The Hi8 VCR uses such high-grade tapes
for the Hi8 video system, covering a wide frequency
range, to achieve a high-quality video signal for
recording/playback.
Tapes recorded using the Hi8 video system cannot be
played back on conventional 8mm video equipment
(standard 8mm video system).
Technical Information
79
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