The SS-5702 is a compact and lightweight oscilloscope which covers a frequency bandwidth from DC to 20 MHz. The SS-5702 is designed for dual-trace measurement respectively. The vertical deflection factor is from 5 mV/div to 10 V/div in a 1-2-5 sequence. The trigger system provides an internal triggering, external triggering and TV triggering for TV composite signal. The horizontal deflection system provides sweep rates from 0.5 ju S/div to 0.2 S/div in a 1-2-5 sequence, 5 times sweep magnification (maximum sweep rate becomes 0.1 li S/div) and external horizontal/X-Y operation for Lissajou's pattern. The cathode-ray tube has a viewing area of 8 divisions (vertical) I by 10 divisions (horizontal)and high intensity quantitative measurement is possible by means of the stable accelerating voltage of 2 kV. Internal circuit are designed as a full solid-state structure, and stability and reliability are ensured.