45
RQT7540
Ref
e
re
nce
Specifications
Recording system
DVD Video Recording format (DVD-RAM),
DVD Video format (DVD-R)
Recordable discs
DVD-RAM: 12 cm 4.7 GB, 12 cm 9.4 GB, 8 cm 2.8 GB
DVD-R: 12 cm 4.7 GB, 8 cm 1.4 GB (for General Ver. 2.0)
12 cm 4.7 GB (for General Ver. 2.0/4
k
-SPEED DVD-R Revision 1.0)
Recording time
Maximum 8 hours (with 4.7 GB disc)
XP: Approx. 1 hour, SP: Approx. 2 hours
LP: Approx. 4 hours, EP: Approx. 6 hours/8 hours
Playable discs
DVD-RAM: 12 cm 4.7 GB, 12 cm 9.4 GB, 8 cm 2.8 GB
DVD-R: 12 cm 4.7 GB, 8 cm 1.4 GB (for General Ver. 2.0)
12 cm 4.7 GB (for General Ver. 2.0/4
k
-SPEED DVD-R Revision 1.0)
DVD-Video, DVD-Audio, Video CD, CD-Audio (CD-DA)
CD-R/RW (MP3, CD-DA, Video CD formatted discs)
LASER specification
Class
I
LASER Product
Wave length:
795 nm, 658 nm
Laser power:
No hazardous radiation is emitted with the safety protection
Audio
Recording System:
Dolby Digital 2ch
Audio in:
AV1/AV2 (21 pin), AV3/AV4 (pin jack)
Input level:
Standard: 0.5 Vrms, Full scale: 2.0 Vrms at 1 kHz
Input impedance:
More than 10 k
≠
Audio out:
AV1/AV2 (21 pin), Audio Out (pin jack)
Output level:
Standard: 0.5 Vrms, Full scale: 2.0 Vrms at 1 kHz
Output impedance:
Less than 1 k
≠
Digital audio out: Optical terminal (PCM, Dolby Digital, DTS, MPEG)
Television System
Tuner system:
PAL-I
Channel Coverage:
[The]United]Kingdom]
UHF: CH 21–68
[Republic[of[Ireland[
VHF: CH 4–13, A–J
UHF: CH 21–68
RF converter output:
[The[United]Kingdom]
UHF: CH 21–68 71
d
3 dB
g
[Republic[of[Ireland[
Not provided
Video
Video system:
PAL colour signal, 625 lines, 50 fields
NTSC colour signal, 525 lines, 60 fields
Recording system:
MPEG2 (Hybrid VBR)
Video in:
AV1/AV2 (21 pin), AV3/AV4 (pin jack) 1 Vp-p 75
≠
, termination
S-Video in:
AV2 (21 pin), AV3/AV4 (S terminal) 1 Vp-p 75
≠
, termination
RGB in:
AV2 (21 pin) 0.7 Vp-p (PAL) 75
≠
, termination
Video out:
AV1/AV2 (21 pin), Video Out (pin jack) 1 Vp-p 75
≠
, termination
S-Video out:
AV1 (21 pin), S-Video Out (S terminal) 1 Vp-p 75
≠
, termination
RGB out:
AV1 (21 pin) 0.7 Vp-p (PAL) 75
≠
, termination
Component video output (NTSC 480P/480I, PAL 576P/576I)
Y: 1.0 Vp-p 75
≠
, termination
P
B
: 0.7 Vp-p 75
≠
, termination
P
R
: 0.7 Vp-p 75
≠
, termination
Others
Region code
‚
2
Operating temperature:
5–40
o
C
Operating humidity range:
10–80 % RH (no condensation)
Power supply:
AC 220–240 V, 50 Hz
Power consumption:
29 W
Dimensions (W
k
D
k
H):
Approx. 430
k
274
k
79 mm
Mass:
Approx. 3.5 k
g
[Note]
Specifications are subject to change without notice.
Mass and dimensions are approximate.
Bitstream
This is the digital form of multi-channel audio data (e.g., 5.1 channel)
before it is decoded into its various channels.
CPRM (Content Protection for Recordable Media)
CPRM is technology used to protect broadcasts that are allowed to
be recorded only once. Such broadcasts can be recorded only with
CPRM compatible recorders and discs.
Down-mixing
This is the process of remixing the multi-channel audio found on
some discs into two channels for stereo output. It is useful when you
want to listen to the 5.1-channel audio recorded on DVDs through
your television’s speakers. Some discs prohibit down-mixing and this
unit can then only output the front two channels.
Dynamic range
Dynamic range is the difference between the lowest level of sound
that can be heard above the noise of the equipment and the highest
level of sound before distortion occurs.
Dynamic range compression means reducing the gap between the
loudest and softest sounds. This means you can listen at low
volumes but still hear dialog clearly.
Film and video
DVD-Videos are recorded using either film or video. This unit can
determine which type has been used, then uses the most suitable
method of progressive output.
For PAL
Film is 25 frames per second.
Video is 50 fields per second (two fields making up one frame).
For NTSC
Film is 24 or 30 frames per second, with motion picture film generally
being 24 frames per second.
Video is 60 fields per second (two fields making up one frame).
Finalize
A process that makes play of a recorded CD-R, CD-RW or DVD-R
etc. possible on equipment that can play such media. You can
finalize DVD-R on this unit.
You cannot record onto or edit finalized discs.
Formatting
Formatting is the process of making media such as DVD-RAM
recordable on recording equipment.
You can format the DVD-RAM on this unit. Formatting erases
irrevocably all recordings on the disc.
Frames and fields
Frames refer to the single images that constitute the video you see
on your television. Each frame consists of two fields.
≥
A frame still shows two fields, so there may be some blurring, but
picture quality is generally better.
≥
A field still shows less picture information so it may be rougher, but
there is no blurring.
MP3 (MPEG Audio Layer 3)
An audio compression method that compresses audio to
approximately one tenth of its size without any considerable loss of
audio quality. You can play MP3 you have recorded onto CD-R and
CD-RW.
Glossary
u
r
Frame
Field
Field
7540en.book 45 ページ ２００４年２月１０日 火曜日 午後１２時５８分
