YOKOGAWA DLM3054HD Mixed Signal Oscilloscope

Pulse width trigger is triggered based on the pulse width (greater than/less than/equal to/not equal to the set value), suitable for capturing narrow pulse or wide pulse fault signals. The trigger source is set to "CH2" and the condition is set to "Width>10 μ s" to capture excessively wide pulses in the motor drive signal

Bus triggering supports CAN/LIN/SPI/I2C/UART protocols, triggered by specific frame IDs and data contents, suitable for communication signal analysis. CAN triggering: set to "ID=0x123", data "D0=0x55", captures CAN frames sent by specific ECUs

Mode triggered combination of analog and digital channel condition triggering (such as "CH1>2V and D01=1 and D02=0"), suitable for complex timing triggering conditions set to "CH3 (IGBT drive)>15V AND D05 (protection signal)=0", capturing the protection trigger when IGBT is conducting

Video triggering supports NTSC/PAL/SECAM standards, triggered by field/line, suitable for video signal testing (such as car display screen signals). The trigger source is set to "CH4", the standard is set to "PAL", and the field is set to "Even", capturing even field signals of the video

2. Analysis function (extracting key signal information)

(1) Automatic measurement

Press the "Measure" button on the front panel to enter the automatic measurement interface, and select "Add Measurement".

Select parameters from the measurement category (voltage/time/frequency/count) (such as "Vpp" peak to peak value, "Freq" frequency, "Duty" duty cycle), and specify the measurement channel (such as CH1, D01).

The measurement results are displayed at the bottom of the screen (updated in real-time), supporting the simultaneous display of 10 measurement parameters; Press the "Statistics" button to view statistical data (mean, maximum, minimum, standard deviation).

(2) Mathematical Operations and FFT Analysis

Mathematical operation: Press the "Math" key, select the operation type (such as "CH1-CH2" to calculate differential signals, "CH3 × CH4" to calculate power waveforms), set the operation range (full screen/specified area), and display the operation result waveform on the screen (default red).

FFT analysis: Press the "Math" key → "FFT", select the FFT channel (such as CH1), set the number of FFT points (128~1M points, the more points there are, the higher the frequency resolution), window function (Hanning window/rectangular window, reducing spectrum leakage), switch the screen to frequency domain display, and label the peak frequency and amplitude.

(3) Protocol decoding (communication signal analysis)

Taking CAN bus decoding as an example:

Press the "decode" key → "Add decode" → "CAN".

Set the decoding channel (such as "CH1" as CAN_S, "CH2" as CAN_L), baud rate (such as 500kbps), and protocol version (CAN 2.0A/B).

The screen displays the CAN frame decoding result (frame ID, data length, data content, frame type), which is aligned with the simulated waveform time. Clicking on the decoding entry can locate the corresponding waveform position and quickly troubleshoot communication errors (such as bit errors and CRC errors).

3. Data management (saving and exporting)

(1) Data saving types and formats

DLM3054HD supports multiple data formats to meet different usage needs:

Data Type Format Usage

Save analog/digital waveforms in. wfm (Yokogawa specific format, including waveforms and settings) and. csv (numerical format, can be imported into Excel for analysis) for later playback or data analysis

Screenshot. bmp/. png/. jpg (image format) saves the current screen display content for report generation or fault recording

Set file. set (instrument setting parameters, including channel, trigger, measurement configuration) to save commonly used test configurations, which can be directly imported for the next use without the need for repeated settings

Decoding Data. txt (text format, including protocol frame information) stores the bus decoding results for analyzing communication frame sequences

(2) Quick save operation

Press the "Save" button on the front panel, and a save menu will pop up on the screen. Select the save type (such as "Waveform" or "Screenshot").

Select the save location (USB device/internal memory), enter the file name (supports Chinese/English, default includes date and timestamp).

Press the "OK" button to complete the save. After successful saving, the screen will display a "Save Completed" prompt.

(3) PC data export

Connect the oscilloscope to the PC via a USB cable and install Yokogawa specific software (such as "Yokogawa Scope Order") to achieve:

Real time data transmission: The PC displays the waveform collected by the oscilloscope in real-time, supporting remote control of acquisition and parameter settings.

Batch data export: Export the. wfm/. csv files from the oscilloscope's internal memory or USB device to a PC and perform secondary analysis using Excel or MATLAB.