YOKOGAWA DLM3054HD Mixed Signal Oscilloscope

Basic operation process

1. Startup and initialization settings

(1) Power on preparation

Hardware connection: Confirm that the instrument is powered off, connect the analog probes (CH1~CH4) and digital logic probes (if necessary), insert the AC power cord, and turn on the power switch on the rear panel.

Start self-test: After powering on, the instrument automatically performs hardware self-test (checking channels, triggering systems, storage modules), and enters the main interface after passing the self-test; If the self-test fails and the screen displays an error code (such as E012: CH1 channel abnormality), contact maintenance.

Restore default settings: To reset all parameters, press the "Utility" key → "System" → "Factory Reset", confirm and restore to factory default (time base 100 μ s/div, vertical sensitivity 1V/div, trigger mode automatic).

(2) Probe calibration (key steps)

To ensure measurement accuracy, calibration should be performed on the analog probe after its first use or replacement

Connect the probe to CH1, set the probe attenuation ratio to 10X, and connect the probe tip to the front panel "CAL" terminal (providing 1kHz, 3Vp-p standard square wave) with the grounding clip.

Press the "CH1" key → "Probe Setup" → "Probe Calibration", the instrument automatically collects standard square waves, calibrates vertical gain and phase, and displays "Calibration OK" after calibration is completed.

Repeat steps 1-2 to complete calibration of other analog channel probes; The digital probe does not require calibration, but it needs to be confirmed that the threshold voltage matches the measured logic level (such as TTL set to 1.4V).

2. Signal acquisition and basic settings

Taking "synchronous acquisition of analog signal (CH1)+digital signal (D01~D04)" as an example, the operation process is as follows:

Channel activation: Press the "CH1" button on the front panel (indicator light on), press the "DIGITAL" button (indicator light on), and activate 1 analog channel and 16 digital channels (unnecessary channels can be disabled through "Digital Setup").

Parameter settings:

Vertical setting: Rotate the CH1 vertical sensitivity knob and adjust it to the appropriate gear (if the measured signal is 5Vp-p, set it to 1V/div); Press the "CH1" key → "Offset", rotate the vertical position knob to center the waveform.

Horizontal setting: Rotate the horizontal time base knob and select the time base gear (if the measured signal frequency is 1kHz, set it to 100 μ s/div, and display 10 grids per cycle); Press the "Horizontal" key → "Delay" to set the trigger delay to 0 (real-time acquisition).

Trigger settings: Press the "Trigger" key → "Source" to select "CH1", "Type" to select "Edge", "Slope" to select "Rising", rotate the trigger threshold knob to place the threshold line in the middle of the rising edge of the CH1 waveform.

Start acquisition: Press the "Run/Stop" button (indicator light is green and constantly on), and the instrument will start continuous signal acquisition. The screen will synchronously display CH1 analog waveform and D01~D04 digital waveform (digital channels are displayed with high and low level bars, with high level being "1" and low level being "0").

Single acquisition: To capture a single transient signal (such as a fault pulse), press the "Single" button, and the instrument will wait for the triggering conditions to be met before collecting the waveform once. After the acquisition is completed, it will automatically stop (the "Run/Stop" indicator light is red and always on).

3. Auto Setup function

For beginners or quick testing scenarios, parameter configuration can be completed with one click through "Auto Setup":

Connect the probe to the measured signal and press the "Auto Setup" button on the front panel.

The instrument automatically detects signal amplitude and frequency, sets vertical sensitivity, time base, trigger source, and threshold, and displays the optimized waveform on the screen (default display shows all open channels).

If the waveform display is poor (such as too small amplitude or unstable triggering), the vertical sensitivity or triggering threshold can be manually adjusted without the need to perform automatic settings again.

Core functions and advanced operations

1. Trigger function (precise capture of target signals)

DLM3054HD supports multiple trigger types, covering both conventional and complex signal scenarios. The core trigger modes are as follows:

Trigger type functional characteristics and applicable scenario operation examples

Edge triggering is the most basic triggering mode, which detects the rising/falling/double edge of the signal and is suitable for stable periodic signals (such as sine waves and square waves). The triggering source is set to "CH1" and the slope is set to "Falling" to capture the zero crossing falling signal of the power supply voltage