Handykit - MK - 620 Oscilloscope

The Handykit MK-620 is a classic analog 20 MHz two-channel oscilloscope. This type of device, often produced under various brand names such as Hung Chang or Matrix, is a standard instrument for general electronics repair and educational purposes.

Technical Specifications:

Bandwidth: DC to 20 MHz (-3 dB).
Channels: 2 channels (CH A and CH B on this model) for simultaneous observation of two signals.
Vertical Sensitivity: Adjustable from 5 mV/div to 20 V/div in 10 steps.
Timebase: Ranges from 0.2 µs/div to 0.5 s/div over 20 calibrated steps.
Maximum Input Voltage: About 300 V (DC + AC peak).
Weight: About 7 to 8 kg.

Main Features:

Operating Modes: Supports CH-A, CH-B, DUAL (both channels) and ADD (sum of signals).
Component Tester: A notable feature of the MK-620 is the built-in Component Tester (visible at the bottom left of the photo with the red banana plugs), allowing you to test the characteristics of components such as diodes and transistors.
X-Y Mode: Ability to use Channel B as the horizontal axis, useful for phase measurements.
Triggering: Advanced trigger options including TV Video Sync (for stable display of video signals) and an Auto-sweep function via the Level knob.
5x Magnifier: The horizontal position knob can be pulled out (PULL 5X MAG) to magnify the timebase by a factor of 5.

This device needs calibration and maintenance.
The buyer is aware of this and has knowledge of its operation.