SL-C20
Sony 1983
Betamax SL-C20



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711B CHASSIS

Specifications

System

Video recording system
Rotary two-head helical scanning
Video Signal
CCIR standards, PAL colour
Aerial input
75-ohm, asymmetrical aerial socket
Channel coverage (AEP model)
VHF: Western European channels E2-12
UHF: Western European channels E21-68
(Up to 12 programmes can be preset.)
Channel coverage (UK model)
UHF: Western European channels E21-E68
(Up to 12 programmes can be preset.)
RF output signal
UHF channels E30 to E39 (variable)
75 ohms, unbalanced

Video

Input
VIDEO IN: BNC connector
1.0 V +1.0V -0.5V (p-p)
75 ohms, unbalanced, sync negative
Output
VIDEO OUT: BNC connector
1.0 V +1.0V -0.5V (p-p)
75 ohms, unbalanced, sync negative
Horizontal resolution
260 lines
Signal-top noise ratio
Colour: Better than 40dB
B/W: Better than 43dB

Audio

Input
AUDIO IN: phono jack
47 kilohms, -10 dBs (0 dBs = 0.775 V rms)
Output
AUDIO OUT: phono jack
Load impedance less than 10 kilohms
-10 dBs with 47 kilohms load, unbalanced
Audio frequency response
50Hz to 10 kHz
Signal-to-noise ratio
40dB
Audio distortion
Less than 4% at 400 Hz

Tape transport

Tape speed
18.73 mm/sec.
Maximum recording time
2 hours 10 min. (with Sony L-500 cassette)
3 hours 15 min. (with L-750)
Fast forward/rewind time
Within 5 min. (with L-500)

Timer

Clock
Crystal lock
Time indication
24-hour cycle
Timer setting
Only for recording
1 events/week, adjustable for any day or
for all 7 days of the week or for every week
Power back-up
Back-up duration of 3 mins at any one time

General

Power requirements
220V ac ±10%, 50-60 Hz (AEP model)
240V ac ±10%, 50-60 Hz (UK model)
Power consumption
38W
Storage temperature
-20°C to +65°C (-4°F to +149°F)
Operating temperature
5°C to 40°C (41°F to 104°F)
Dimensions
Approx. 430 x 105 x 360 mm (w/h/d)
(17 x 4 1/4 x 14 1/4 inches)
including projecting parts and controls
Weight
Approx. 10 kg (22 lbs 1 oz) net