Hitachi V-212 20MHz Analog Oscilloscope (Used)

The Hitachi V-212 is a dual-trace oscilloscope featuring a DC to 20 MHz bandwidth. Even in the age of modern digital instruments, analog oscilloscopes continue to be highly valued for their ability to display real-time waveforms instantly, without latency or digital aliasing, providing a true representation of signal behavior.

This particular unit is used and was acquired from an industrial liquidation sale. We offer full transparency: the instrument powers on, the Cathode Ray Tube (CRT) displays a bright, well-focused trace, and it has undergone a basic functional test by applying a sine wave signal from an analog function generator, demonstrating proper response on the primary channel.

Manufacturer Background: Hitachi Denshi, Ltd.

Manufactured in Japan during the golden age of analog electronics, Hitachi Denshi established itself as a direct competitor to brands such as Tektronix and Kenwood. Its instruments are renowned for their exceptionally durable components, precision mechanical switches, and long-life CRTs. These qualities have helped many Hitachi oscilloscopes remain operational decades after their original production, making them highly regarded among technicians, educators, electronics enthusiasts, and vintage test equipment collectors.

Who Is It For and What Is It Used For?

This instrument is not designed for analyzing high-speed digital communication buses such as 12C or SPI. Its true strengths shine in the following applications:

• Audio Amplifier Repair: Ideal for signal tracing and for detecting clipping, crossover distortion, and harmonic distortion in real time.

• Education and Training: One of the best ways to develop a solid understanding of time-domain and amplitude measurements before moving on to digital oscilloscopes with “Auto Set” functionality.

• Switch-Mode Power Supply Diagnostics: Useful for observing output ripple, switching waveforms, and the behavior of power transistors under operating conditions.

• Classic Automotive Electronics: Well suited for diagnosing inductive sensors, ignition system waveforms, and other analog signals commonly found in legacy automotive electrical systems.

Key Technical Specifications (Datasheet Information)

• Bandwidth: DC to 20 MHz (DC Coupling) / 10 Hz to 20 MHz (AC Coupling).

• Chanels: 2 (CH1, CH2).

• Display Modes: CH1, CH2, DUAL, ADD (Algebraic Sum), and DIFF (Differential Mode).

• CRT Display: 6-inch rectangular cathode-ray tube with an internally illuminated graticule and P31 green-phosphor screen.

• Vertical Deflection Sensitivity: 5 mV/div to 5 V/div in 10 calibrated steps. Integrated ×5 vertical magnifier extends sensitivity to 1 mV/div.

• Sweep Time: 0.2 µs/div to 0.2 s/div across 19 calibrated sweep ranges.

• Triggering Modes: AUTO, NORM, TV-V, and TV-H. Trigger Sources: CH1, CH2, LINE, and EXT.

• Power Requirements: Rear-panel selectable multi-voltage operation (AC 100 V, 120 V, 220 V, or 240 V, 50/60 Hz). Approximate power consumption: 40 W.

• Approximate Weight: 7.0 kg (15.4 lb).

Frequently Asked Questions (Recommended FAQ Section)

Q1: Does the oscilloscope come calibrated with a certification certificate?
No. As this is a pre-owned instrument acquired from an industrial surplus sale, it is sold as operationally functional but without a current calibration certificate. It is best suited for workshops, educational use, troubleshooting, and general electronics work where accredited laboratory-grade accuracy is not a critical requirement.

Q2: What exactly is included with my purchase?
This listing includes only the Hitachi V-212 Oscilloscope and its attached standard power cord. Measurement probes, printed manuals, accessories, and the original factory packaging are not included unless specifically shown in the listing photographs.

Q3: Does the CRT display have screen burn-in?

According to the visual inspection and testing performed (see image gallery), the CRT phosphor screen appears to be in excellent condition. The display produces a sharp, bright trace with no visible signs of significant screen burn-in or ghost images typically associated with instruments that have been left powered on with a static display for extended periods.

Q4: Can I connect it directly to the mains power in my country?
Yes. This model features a rear-panel selectable input voltage system that supports AC 100 V, 120 V, 220 V, and 240 V operation at 50/60 Hz. Prior to shipment, we will confirm your country’s mains voltage and set the selector accordingly whenever possible.