Sony DTC-670 Service Manual

SERVICE MANUAL
SPECIFICATIONS
Tape Digital audio tape
Recording head
Rotary head
Recording time Standard: 120 minutes.
Long-play mode: 240 minutes
(with DT-120)
Standard: 8.15 mm/s,
Long play mode: 4.075 mm/s
Standard: 2,000 rpm,
Long-play mode: 1,000 rpm
Double Read Solomon code
Tape speed
Drum rotation
Error correction
Tape
Track pitch
Sampling frequency
Modulation system
Transfer rate 2.46 Mbit/sec.
D/A conversion (Quantization)
Standard: 16-bit linear
Long-play mode: 12-bit
non-linear
Standard: 2~22,000 Hz (+0.5
dB)
Long-play mode: 2-14,500 Hz
(+0.5 dB)
Standard: more than 90 dB
Long-play mode: more than 90
dB
13.6 um (20.4 pm)
48 kHz, 44.1 kHz, 32 kHz
8-10 Modulation
Frequency response
Signal to noise ratio
Long-play mode: more than 90
dB
Standard: less than 0.005% (1
kHz)
Long-play mode: Jess than
0.08% (1 kHz)
Below measurable limit
(0.001% W. PEAK)
Total harmonic distortion
DIC-670
AEP Model
Model Name Using Similar Mechanism | DTC-57ES
Tape Transport Mechanism Type DATM-100
Wow and flutter
ern ee ae
Jack type |Impedance| Rated (Load
output jimpedance
LINE OUT] phono jack |470 ohms |-4dBs |More than
10 kohms
1.8mW (32 ohms
Input
DIGITAL IN
Output
stereo 220 ohms
phone jack
DIGITAL OUT (optical jack): wavelength 660 nn
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DIGITAL AUDIO TAPE DECK
SONTY.