More vertical resolution Yokogawa introduces the DLM3000HD with 12 bits

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FAULHABER Drive Systems

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In the DLM3000HD oscilloscope series, Yokogawa now offers a vertical resolution of 12 bits. The manufacturer is also upgrading the memory. These oscilloscopes are tailored for power electronics.

In 2018, Yokogawa launched the DLM3000 oscilloscope series. With the HD variant, the company meets the demand to increase vertical resolution, allowing for the analysis of products such as motors, inverters, and sensor-related products with the oscilloscope.

In the HD series, Yokogawa has integrated features such as a history memory, automatic parameter measurement with statistic and histogram functions, combined trigger functions of the B-trigger, and various real-time low-pass filters per channel to ensure high signal fidelity.

New hardware concept with 12 bits

Equipped with an A/D converter and 12 bits, the hardware concept of the DLM3000HD enables improved signal representation and analysis, offering a 16 times higher vertical resolution compared to the existing DLM3000 model. Even at maximum sampling rate and with all channels activated, the full 12-bit resolution is maintained. In High-Resolution Mode, the resolution can be increased to up to 16 bits through software. The available bandwidth ranges from 350 to 500 MHz.

The memory of up to one giga-word supports the capture of measurement signals with high sampling rates in combination with long measurement durations. The large memory benefits the history memory, which enables the storage of up to 200,000 transient captures, such as switching cycles that can be recalled after the measurement for further analysis and comparison to locate and determine deviations or error patterns in the measurement sequence.

Recorder trend of more than 80 minutes

Furthermore, the DLM3000HD provides a display similar to recorder mode in conjunction with the time domain, by running the measurement signals in roll mode from one edge of the screen to the other. This allows for the display of a slow recorder trend of more than 80 minutes, giving users an overview related to the behavior of the measurement signals.

Another enhanced feature is the intelligent auto-setup, which allows for the development and evaluation of serial bus systems. The automatic detection of bitrate and trigger threshold can now also be applied to stored and mathematically processed measurement data after data collection.

To comprehensively characterize complex electronic systems, a high number of measurement channels is often required. The DLMsync function allows synchronization of two DLM3000HD models, thereby increasing the number of available analog channels to eight. The devices are synchronized in terms of clock and trigger through a special cable. The measurement data are combined into a single file in the master device.

Possible applications of the DLM3000HD

• Developing and evaluating serial bus protocols in vehicles; including CAN, CAN FD, and other in-vehicle bus standards.

• Developing and analyzing silicon carbide (SiC)/gallium nitride (GaN) inverters, onboard chargers for electric vehicles, uninterruptible power supplies (UPS), and DC-DC converters.

• Developing electronic control units (ECUs) and embedded systems.

• Analyzing and testing industrial devices such as high-efficiency motors, robots, and sensors.

(heh)

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Link: DLM3000HD by Yokogawa. Technical details (external link).