Kenwood DM-SG7 User Manual

DM-SG7(EN)
26
Recording (digital input)
1
Select the “DIGITAL 1 (or 2)”.
When this unit and CD player are connected with an optical fiber cable, the digital signal input through
the DIGITAL IN (OPTICAL) jack can be recorded in a digital form (this recording is hereinafter referred to
as digital recording). Enjoy high sound quality of digital recording.
Preparation
3
Start recording.
Recording is not possible if the following characters are
displayed.
“UNLOCK” : The sampling frequency is not 32 kHz, 44.1
kHz, 48kHz.
•
\Use analog recording. ¢
: The optical fiber cable is unplugged or loos-
ened. (The connector is not connected.)
\Connect the optical fiber cable correctly.
@#
“SCMS ON” : Digital recording is prohibited by SCMS.
•
\Use analog recording. ¢
“Not Audio” : The input digital signal is not an audio
signal.
Also, “DISC FULL”, “PROTECTED”, “PLAY ONLY”.
∞
REC
INPUT
DIGITAL 1 2
REPEAT
(
− dB)
SINGLE
 0
01 0
:
01
R
L
∞
3 0130
10
5
¶ Load a CD in the CD player.
¶ Open the write protect tab of the Mini Disc to make it recordable.
9
¶ Load the Mini Disc.
¶ Check the remaining recording time.
º
¶ Select the CD input on the amplifier.
“DIGITAL 1 (or 2)” lights up
¶ When the EDIT key is pressed during recording, a track
number is inserted in that position.
Digital recording
2
Select “AUTO” or “MANUAL”.
Each press switches the mode.
1 goes off (AUTO) : Track numbers are added au-
tomatically.
∞
2 MANUAL : Track numbers are added
manually.
∞
Each press switches the mode.
1 ANALOG
2 DIGITAL 1 : Digital mode (when the system is con-
nected)
@
3 DIGITAL 2 : (Digital mode spare)
4 MONO
AUTO/
MANU.
( − dB)
 0
01
R
L
∞
3 0130
10
5
MANUAL
Extinguished in “AUTO” mode, lit in “MANUAL” mode.
Recording pause
Recording start
Recording (digital input)
Press twice.
¶
¶

Kenwood DM-SG7 Specifications

System and Audio

system	Minidisc digital audio system
laser	Semiconductor laser
recording method	Field modulation overwrite method
audio compression	ATRAC (Adaptive TRansform Acoustic Coding)
playing rotation	Approx. 400 rpm ~ 900 rpm (CLV)
D/A conversion	1 Bit
oversampling	128 fs (5644.8 kHz)
A/D conversion method	Sigma-delta method
sampling frequency	44.1 kHz

Digital Audio Performance

frequency response (playback mode)	8 Hz ~ 20 kHz, ± 1 dB
signal to noise ratio (playback mode)	More than 92 dB
dynamic range (playback mode)	More than 90 dB
total harmonic distortion (1 kHz, playback mode)	Less than 0.007 %
channel separation (1 kHz, playback mode)	More than 85 dB
wow & flutter	Less than unmeasurable limit

Inputs and Outputs

analog input sensitivity / input impedance	300 mV / 70 kΩ
analog output level / load impedance	1.2 V / 3.2 kΩ
digital input, optical (wave length 660 nm)	- 15 dBm ~ - 21 dBm

General Specifications

power consumption	14 W
dimensions (width)	200 mm (7 - 7 / 8")
dimensions (height)	77 mm (3 - 1 / 16")
dimensions (depth)	247 mm (9 - 3 / 4")
weight (net)	2.1 kg (4.6 lb)