- Yokogawa introduces the DLM3000HD series oscilloscopes, which feature increased resolution compared to the existing DLM3000 series.
- Equipped with 4 analog inputs, these oscilloscopes cover a frequency bandwidth of 350 MHz and 500 MHz, depending on the model.
- Equipped with an 8.4” touch screen, they offer 12-bit vertical resolution.
Yokogawa launched the DLM2000 series 4-channel oscilloscopes in 2008, followed by the DLM3000 series in 2018. However, given the growing emphasis on decarbonization in recent years, the Japanese manufacturer sees that improving the energy efficiency of equipment such as motors and power converters is becoming essential. This need is particularly acute in the field of power electronics, especially for new-generation power devices using silicon carbide (SiC) components. This calls for instruments with increased resolution.
The DLM3000HD series comprises two oscilloscope models with four analog inputs covering a bandwidth of 350 MHz (DLM3034HD) and 500 MHz (DLM3054HD) respectively.
Signals are digitized with 12-bit vertical resolution. This provides 16 times the resolution of existing DLM3000 series oscilloscopes. Yokogawa believes that this feature is of particular interest to developers of new-generation inverters, as it enables the precise observation of minute changes in high-speed signals, for example during the switching phase. This makes it possible to detect phenomena that could lead to unexpected anomalies.
Signals are digitized at sampling rates of up to 2.5 GS/s on four channels. Up to 1 G points can be stored in memory.
The fourth analog input can be used via a logic probe to acquire 8 digital signals. This turns it into a Mixed Signal Oscilloscope (MSO) with three analog and 8 logic inputs. In addition to observing data and acting as trigger sources, the logic inputs enable analysis of serial buses such as I2C and SPI.
Dedicated triggering and analysis options are available for the various serial buses used in on-board systems and vehicles: UART (RS232)/I2C/SPI/CAN/CAN FD/LIN/FlexRay/SENT/CXPI/PSI5 Airbag. The logic input can also be used for I2C/SPI/UART/SENT. When it is not necessary to observe the quality of a bus waveform, it is possible to decode or analyze using the logic inputs.
In particular, the DLM3000HD series oscilloscopes offer an auto-setup function for serial bus analysis, which automatically sets the optimum bit rate and trigger threshold level, can now be used with previously captured waveforms. This means that the auto-setup function can even be used for low-frequency signals.
By connecting two DLM3000HD oscilloscopes via the Japanese manufacturer’s DLMsync function, it is possible to perform synchronous measurements on up to eight channels.
