HANTEK DSO2D20 (01) PDF Document

To ensure safe operation and avoid injury or damage to your HANTEK DSO2D20, please follow these safety precautions:

Repairs: Only professionally authorized personnel should perform repairs.

Power Cable: Use only the power cable approved for the country in which the product is used.

Connections: Before connecting a probe to a circuit, first connect the probe to the oscilloscope. Before disconnecting the probe from the oscilloscope, first disconnect the probe from the circuit under test.

Grounding: The product is grounded through the power cable’s grounding conductor. Ensure the product is properly grounded before connecting any input or output terminals to avoid electric shock.

Probe Connection: The ground wire of the probe is at ground potential. Do not connect the ground wire to high voltage.

Terminal Ratings: To avoid fire or excessive current, check all rating values and signs on the product before making connections.

Operation with Cover: Do not operate the product with the cover or panel open.

Circuit Exposure: Do not touch exposed connectors and components when the power is on.

Suspected Faults: If you suspect the product is damaged, have it inspected by qualified maintenance personnel.

Ventilation: Maintain proper ventilation.

Environment: Do not operate in a humid, inflammable, or explosive environment.

Surface: Keep the product surface clean and dry.

The manual and product for the HANTEK DSO2D20 use the following security terms and signs:

Security terms in the manual:

Warning: Indicates an operation that may not cause immediate damage to you.

Note: Indicates an operation that may cause damage to the product or other property.

Safety terms and signs on the product:

Warning: Indicates a potential hazard that may be caused to you if you do not perform this operation.

Hazardous Voltage Sign: A triangle with a lightning bolt symbol indicates a hazardous voltage risk.

Safety Warning Sign: A triangle with an exclamation mark symbol indicates a safety warning.

The HANTEK DSO2D20 can be used for measurements under class I. The measurement class definitions are as follows:

Class I: Refers to measurements taken on a circuit not directly connected to the main power supply. For example, circuits not exported from a main power supply, especially from a protected (internal) main power supply.

Class II: Refers to measurements taken on a circuit directly connected to low-voltage instruments. For example, measurements on household appliances, portable tools, and similar equipment.

Class III: Refers to measurements taken on construction equipment. For example, measurements on switchboards, circuit breakers, and circuits in fixed equipment, as well as equipment for industrial use.

Class IV: Refers to measurements taken at the source of low-voltage equipment. For example, measurements on electricity meters and primary overcurrent protection equipment.

The HANTEK DSO2D20 oscilloscope uses a fan for forced cooling. Please ensure that the air intake and exhaust areas are free from obstructions. When using the oscilloscope in a bench-top or rack setting, provide at least 10 cm of clearance beside, above, and behind the instrument for adequate ventilation. Inadequate ventilation can cause an increase in temperature, which may damage the instrument. Keep the instrument well-ventilated and inspect the air outlet and fan regularly.

The specified working environment conditions for the HANTEK DSO2D20 are as follows:

Temperature:

Operating: 0°C to 50°C

Non-operating: -30°C to 70°C

Humidity:

Operating: Below +30°C: ≤95%RH; +30°C to +40°C: ≤75%RH; +40°C to +50°C: ≤45%RH (all without condensation).

Non-operating: Below 65°C: ≤95% RH (without condensation).

Altitude:

Operating: below 3 km

Non-operating: below 15 km

Installation (Overvoltage) Category: This product is powered by mains conforming to installation (overvoltage) category II.

Pollution Degree: The HANTEK DSO2D20 is rated for Pollution Degree 2, which means normally only nonconductive pollution occurs, with temporary conductivity caused by condensation to be expected (e.g., indoor environment).

Care: Do not expose the LCD to direct sunlight for a long time when storing or placing the oscilloscope.

Cleaning:

Inspect the oscilloscope and probe frequently and clean the outer surfaces as needed by following these steps:

1. Use a lint-free cloth to remove dust from the outside of the oscilloscope and probe. Be careful to avoid scratching the display filter.

2. Clean the oscilloscope with a soft cloth soaked in water. For a more thorough cleaning, use an aqueous solution of 75% isopropyl alcohol.

Note: To avoid damaging the surface of the oscilloscope or probe, do not use any corrosive or chemical cleaning reagents.

Warning: Before powering on the device again, ensure it is completely dry to avoid electrical short circuits or personal injury caused by moisture.

The HANTEK DSO2D20 series digital oscilloscope has the following key features:

Supports 1MΩ/50Ω impedance switching for signal integrity.

Sampling rate of 2GSa/s with a maximum bandwidth of 500MHz.

Built-in arbitrary waveform generator, outputting 5 standard waveforms, with support for custom arbitrary and burst outputs.

Protocol Trigger: Includes five standard serial protocol triggers and decoding for UART, LIN, CAN, SPI, and IIC.

32 automatic measurement functions with statistical analysis.

Two sets of digital voltmeter functions and hardware frequency meter functions.

Save and export function for settings, CSV, images, and waveforms.

Four sampling methods: normal, average, peak, and high-precision.

14 operating languages.

Two cursor measurement modes: manual and tracking.

Vertical measurement range from 500uV to 10V.

FFT scale display for convenient reading.

Manual, single, and one-click AUTO measurement.

XY mode supports dual-window display.

The HANTEK DSO2D20 series consists of the following models, with all models having 2 channels and a 2GSa/s sampling rate:

After receiving your HANTEK DSO2D20, please perform the following checks:

Check the shipping package: Inspect for any damage caused by transportation. If the packaging cartons or protective foam pads are seriously damaged, keep them until the machine and accessories pass electrical and mechanical testing.

Check the accessories: Verify that all accessories are present and undamaged. The list of accessories is provided in Appendix A of the user manual.

Check the machine: If you find the instrument is damaged, not working properly, or fails its performance test, contact the dealer responsible for the business.

To prepare your HANTEK DSO2D20 for use, follow these steps:

1. Adjust the Supporting Legs: The machine has a bracket at the bottom. Adjust it to tilt the oscilloscope slightly upwards for better stability and easier viewing.

2. Connect to AC Power: Use the provided power cord to connect the oscilloscope to a suitable AC power supply (~100-240V, 50/60Hz). To avoid electric shock, ensure the instrument is correctly grounded.

3. Turn-on Checkout: Press the power button on the lower left corner of the front panel. During startup, the oscilloscope performs a series of self-checks. After the self-check is complete, the startup screen will appear.

To inspect the basic functions of your HANTEK DSO2D20, follow these steps:

1. Click the [Default Setup] button to restore the oscilloscope to its factory settings.

2. Connect the grounding crocodile clamp of the probe to the ground terminal on the front panel.

3. Connect the probe tip to the input terminal of channel 1 (CH1) and also to the compensation signal output terminal (marked with ≈ 5V@1kHz).

4. Set the probe attenuation ratio to X10 and click the [AUTO SET] button.

5. Observe the screen. A square wave signal should be displayed. If it is not a perfect square wave, you will need to perform probe compensation.

6. Repeat the process for the CH2 channel.

When connecting a probe to an input channel for the first time, you must perform this adjustment to match the probe to the channel. Uncompensated probes can lead to measurement errors.

1. Perform the first four steps of the “Function Inspection” procedure to display the compensation signal on the screen.

2. Compare the displayed waveform to the reference images for “Perfectly compensated”, “Over compensated”, and “Under compensated”.

3. Use a non-metallic screwdriver to adjust the variable capacitance on the probe until the waveform on the screen is “Perfectly compensated” (a clean square wave).

The Horizontal control system on the HANTEK DSO2D20 includes the following:

Horizontal Time Base Knob (SEC/DIV): Rotate this knob to modify the horizontal time base (time per division). Clockwise rotation decreases the time base (zooms in), and counterclockwise rotation increases it (zooms out). Pressing this knob switches between “coarse” and “fine” adjustment modes.

Horizontal Displacement Knob (POSITION): Rotate this knob to modify the horizontal displacement, moving the trigger point and waveform left or right relative to the center of the screen. Pressing this knob resets the horizontal displacement to zero.

HORIZ MENU Button: Press this button to access the horizontal system menu, where you can set the horizontal mode (YT, XY, Roll) and configure delayed sweep.

The Vertical control system on the HANTEK DSO2D20 includes the following for each channel (CH1 and CH2):

Channel Menu Buttons (CH1 MENU, CH2 MENU): Press to turn the respective channel on or off and access its settings menu.

Vertical Offset Knob (POSITION): Rotate to move the waveform up or down. Press to reset the vertical offset to zero.

Vertical Scale Knob (VOLTS/DIV): Rotate to change the vertical scale (volts per division). Clockwise rotation decreases the scale (zooms in vertically), and counterclockwise increases it (zooms out vertically). Press to switch between “coarse” and “fine” adjustment.

MATH MENU Button: Press to open the mathematical operation function menu, allowing you to perform A+B, A-B, A × B, A/B, and FFT operations.

The Trigger control system on the HANTEK DSO2D20 includes the following:

Trigger Knob (LEVEL): Rotate to modify the trigger level. Clockwise rotation increases the level, and counterclockwise decreases it. Pressing this knob sets the trigger level to 50% of the waveform’s peak-to-peak value.

TRIG MENU Button: Press to open the trigger operation menu, where you can set the trigger type, source, mode, and other parameters.

FORCE TRIG Button: Press to force the oscilloscope to generate a trigger signal, regardless of the trigger conditions.

The quick keys for operating mode on the HANTEK DSO2D20 provide fast access to common functions:

AUTO SET: Press this key to enable the automatic waveform setting function. The oscilloscope will automatically adjust the vertical scale, horizontal time base, and trigger mode to achieve the best waveform display.

SINGLE SEQ: Press this key to set the triggering mode to single shot, capturing one acquisition when the trigger condition is met and then stopping.

RUN/STOP: Press this key to toggle the oscilloscope’s operating status between “Run” (continuous acquisition) and “Stop” (paused). The key’s backlight is green in the RUN state and red in the STOP state.

The HANTEK DSO2D20 includes a built-in help system that provides instructions for various function buttons and menu keys. To use it:

1. Press the [HELP] button to enter the help module.

2. Press any other key (e.g., [UTILITY], [MEASURE]) to display help information for that specific function or menu.

3. Press the [HELP] button again to exit the help module.

To manage the analog channels on your HANTEK DSO2D20:

To Enable a Channel:

Press the corresponding channel button (e.g., [CH1]) to open the channel. The light on the button will turn on, and the channel’s status label and waveform will appear on the screen.

To Disable a Channel:

If the channel is already open and selected, press its button (e.g., [CH1]) once to close it.

If the channel is open but not selected, press its button once to select it, and then press it again to close the channel.

To Adjust the Vertical Scale (Volts/Div):

When a channel (e.g., CH1) is open, rotate the corresponding VOLTS/DIV knob. Rotating clockwise decreases the scale (zooms in), and rotating counterclockwise increases the scale (zooms out). The vertical scale range is 500uV/div to 10V/div (with a 1X probe).

To Adjust the Vertical Offset:

Rotate the corresponding POSITION knob to move the waveform up or down on the screen. Pressing the knob will reset the offset to zero.

To configure these settings for a specific channel (e.g., CH1) on your HANTEK DSO2D20:

1. Press the [CH1] button to open the channel menu.

Channel Coupling:

Select the Coupling menu option. You can choose from:

DC: Both DC and AC components of the signal pass through.

AC: The DC component of the signal is blocked.

Ground: Both DC and AC components are blocked, and the input is connected to ground.

Bandwidth Limit (BW):

Select the BW menu option to reduce noise in the displayed waveform. You can choose to turn it off or limit the bandwidth to 20M, 100M, 200M, or 350M.

To configure the input impedance and probe ratio for a channel (e.g., CH1) on your HANTEK DSO2D20:

1. Press the [CH1] button to open the channel menu.

Input Impedance:

Select the Impedance menu option. You can choose between:

1M Ω: High impedance, suitable for most general-purpose measurements.

50 Ω: Used to match devices with a 50 Ω output impedance.

Probe Ratio (Attenuation):

Select the Attenuation menu option to match the setting to the attenuation ratio of your probe. This ensures that the amplitude readings on the screen are correct. You can select from various ratios, such as 1X, 10X, 100X, etc. The default is 1X.

To use these features for a specific channel on your HANTEK DSO2D20:

1. Press the channel menu button (e.g., [CH1]).

Waveform Invert:

Select the Inverting menu option and toggle it on or off. When turned on, the waveform is displayed inverted vertically (180 degrees out of phase).

Fine Tuning:

Select the Fine adjustment menu option. This changes the behavior of the VOLTS/DIV knob.

Coarse Adjustment (Default): The vertical scale changes in standard 1-2-5 steps.

Fine Adjustment: The vertical scale is adjusted in smaller increments, allowing for finer control over the waveform’s on-screen amplitude.

Press the [Acquire] button to access the acquisition settings menu on your HANTEK DSO2D20.

Acquire Type:

Real-time sampling: Real-time digital technology is used to collect waveforms.

Equivalent sampling: Reconstructs waveforms using equivalent sampling techniques.

Acquire Mode:

Normal: The oscilloscope samples the signal at equal time intervals. This mode provides the best display for most waveforms.

Average: The oscilloscope averages multiple waveforms to reduce random noise and improve vertical resolution. You can set the number of averages (4, 8, 16, 32, 64, 128).

Peak: The oscilloscope captures the maximum and minimum values within each sampling interval. This mode is useful for avoiding aliasing and capturing narrow pulses.

High Resolution: This mode uses a supersampling technique to average adjacent points of a single acquired waveform, reducing random noise and producing a smoother display.

Press the [TRIG MENU] button to access the main trigger settings on your HANTEK DSO2D20.

Trigger Level:

Rotate the TRIGGER LEVEL knob to set the voltage level at which the trigger event occurs. The trigger level is indicated by a horizontal line on the display.

Trigger Source:

In the trigger menu, select the Source option. You can choose from:

CH1-CH2: Uses the signal from the selected analog input channel as the trigger source.

External: Uses the signal from the [EXT TRIG] input on the front panel.

Line: Triggers on the AC power line signal.

Trigger Mode:

In the trigger menu, select the Mode option. You can choose from:

Auto: The oscilloscope triggers when a valid trigger condition is met. If no trigger occurs within a certain time, it will automatically acquire a waveform. This ensures a waveform is always displayed.

Normal: The oscilloscope only acquires and updates the waveform when a valid trigger condition is met. If no trigger occurs, the display remains unchanged.

Single: The oscilloscope waits for a valid trigger, acquires one waveform, and then stops. Press the [SINGLE SEQ] key to arm the trigger again.

To perform an FFT and view the frequency spectrum of a signal on your HANTEK DSO2D20:

1. Press the [Math] button.

2. Select Operator and choose FFT.

3. Select Source and choose the channel (CH1 or CH2) you want to analyze.

4. Use the Center and Span menu options to adjust the center frequency and frequency span of the FFT display. You can rotate the multi-functional knob V0 to change these values.

5. Use the Ref Level and Scale menu options to adjust the vertical reference level and scale (in dB or VRms) of the FFT display.

6. Select Vertical Units to choose between dB or VRms.

7. Select a Window function (e.g., Hanning, Rectangular, Flattop) to reduce spectral leakage effects. The choice depends on the signal being analyzed.

The HANTEK DSO2D20 offers 32 types of automatic measurements. Press the [Measure] button and select Type to choose from the following:

Amplitude Measurements:

PkPk, Average, Vmax, Vmin, Vtop, Vmid, Vbase, Vamp, RMS, OverShoot, PreShoot, PerRms, PrdAvg.

Time Measurements:

Frequency, Period, Rise Time, Fall Time, +Width, -Width, +Duty, -Duty.

Delay Measurements (between two sources):

FRR (First Rising to First Rising), FFF (First Falling to First Falling), FRF (First Rising to First Falling), FFR (First Falling to First Rising), LRR (First Rising to Last Rising), LRF (First Rising to Last Falling), LFR (First Falling to Last Rising), LFF (First Falling to Last Falling).

Other Measurements:

FOV (Falling Overshoot), FPRE (Rising Preshoot), Bandwidth.

To use manual cursors for measurements on your HANTEK DSO2D20:

1. Press the [Cursor] button to enter the cursor menu.

2. Select Mode and choose Manual.

3. Select Source and choose the waveform you want to measure (CH1, CH2, or MATH).

4. A measurement window will appear on the screen displaying values like AX, BX, AY, BY, and the differences (delta values).

5. To adjust the cursors:

X Cursors (Vertical Lines): Select AX or BX from the menu and rotate the V0 knob to move the corresponding cursor left or right. The measurement window will update with time and frequency values.

Y Cursors (Horizontal Lines): Select AY or BY from the menu and rotate the V0 knob to move the corresponding cursor up or down. The measurement window will update with voltage values.

6. You can also select AXBX or AYBY to move both cursors simultaneously.

Press the [Display] button on your HANTEK DSO2D20 to access and adjust the following settings:

Type: Choose between Vector (connects sample points with lines) and Point (displays only the sample points).

Intensity: Adjusts the brightness of the waveform trace (0% to 100%).

Grid: Selects the type of background grid: Dot, Line, or Close (no grid).

Grid Brightness (Gridicule): Adjusts the brightness of the grid (0% to 100%).

Screen Brightness: Adjusts the overall brightness of the screen (0% to 100%).

Persist (Afterglow): Sets the persistence time for waveforms on the display. Options include off, infinite, 1s, 5s, 10s, and 30s. This is useful for observing infrequent events or signal jitter.

To upgrade the firmware on your HANTEK DSO2D20, follow these steps:

1. Obtain the upgrade package file and save it to a USB storage device.

2. Insert the USB storage device into the USB HOST interface on the front panel of the oscilloscope.

3. Press the [Utility] button to enter the utility menu.

4. Select the Upgrade menu, then press the Upgrade Firmware software button.

5. Rotate the V0 knob to select the upgrade file from the USB device and press V0 to confirm.

6. Press the Start Upgrade soft key to begin the firmware upgrade. The process takes approximately 5 minutes.

7. After the upgrade is completed, the oscilloscope will restart automatically. It is recommended to perform a self-calibration after upgrading.

The Pass/Fail test function on the HANTEK DSO2D20 monitors a signal and reports if it goes outside a defined mask. To set it up:

1. Press the [Utility] button, then select Pass/Fail.

2. Enable the Test: Select Pass/Fail and toggle it to ON.

3. Select the Source: Choose the channel (CH1 or CH2) you want to test.

4. Create the Mask (Regular):

Select Regular. Use the Vertical and Horizontal options to set the tolerance range (the size of the mask) around the waveform. Use the V0 knob to adjust.

Select Create to generate the rule template based on your settings.

5. Set Output Options:

Message: Turn on to display the number of failed attempts.

Mode: Select the action on Pass or Fail (e.g., output a pulse, sound a beep).

Out Stop: Choose whether to stop the test upon failure or continue running.

6. Run the Test: Select Run from the main Pass/Fail menu to start the test. Select Stop to end it.

Self-calibration optimizes the HANTEK DSO2D20’s signal path for maximum measurement accuracy. It is recommended to run this procedure if the ambient temperature changes by more than 5°C or for best accuracy.

1. Power on the oscilloscope and let it preheat for 20 minutes.

2. Disconnect all probes and cables from the front panel input connectors.

3. Press the [Utility] button.

4. Select the Calibrate menu option.

5. A self-calibration dialog box will appear. Follow the on-screen prompts to start the calibration or to cancel.

You can save and recall various data types to a USB flash drive using your HANTEK DSO2D20.

1. Insert a USB flash drive into the USB HOST port on the front panel.

2. Press the [SAVE/RECALL] button.

To Save:

1. Select the Type of data to save: SetUp, Waveform, Reference, CSV, or Image.

2. Select Save To and choose External.

3. Select Save to save the file to the USB drive. A “Save Successfully” message will appear.

For a quick screenshot, you can also press the [SAVE TO USB] shortcut key on the front panel.

To Recall:

1. Select the Type of data to recall: SetUp, Waveform, or Reference.

2. Select Recall From and choose External.

3. Select Recall to load the file from the USB drive. A “Recall Successful” message will appear.

When you press the [Auto Scale] button on the HANTEK DSO2D20, the instrument automatically adjusts the following settings to display the input signal:

To use the built-in waveform generator on your HANTEK DSO2D20 (on models that include this feature):

1. Connect a BNC cable to the Signal Source Output terminal on the front panel.

2. Press the [WAVE GEN] button to enter the signal generator settings interface.

3. Select Waveform: Choose the Wave menu tab and select the desired waveform type (Sine, Square, Ramp, Exp, Noise, DC, Arb1-Arb4).

4. Set Frequency: Select the Frequency menu tab and rotate the V0 knob to set the frequency.

5. Set Amplitude: Select the Amplitude menu tab and rotate the V0 knob to set the amplitude.

6. Set Offset: Select the Offset menu tab and rotate the V0 knob to set the DC offset value.

7. Set Symmetry/Duty Cycle: For Square waves, set the Duty Cycle. For Triangular/Ramp waves, set the Symmetry.

8. Set Impedance: Select the Impedance menu tab to choose High Impedance (HighZ) or 50 Ω.

If your HANTEK DSO2D20 does not turn on after pressing the power switch, follow these troubleshooting steps:

1. Check if the power cord is properly connected to the side of the oscilloscope and to the power outlet.

2. Check if the power switch has been pressed.

3. After completing the above checks, try restarting the instrument.

4. If the oscilloscope still does not turn on, please contact your local dealer or Hantek technical support.

If you see a seriously distorted signal on your HANTEK DSO2D20, please check the following:

1. Ensure the oscilloscope probe is properly connected to the BNC channel input.

2. Ensure the probe is properly connected to the circuit or device being measured.

3. Check if the oscilloscope probe has been properly compensated. If it is not calibrated, follow the probe compensation procedure in the user manual.

If there is no signal displayed on the screen of your HANTEK DSO2D20, try these steps:

1. Check that the probe is properly connected to the BNC connector of the signal input channel.

2. Check that the channel is enabled (press the CH1 or CH2 menu button).

3. Check if there is a signal being output from the circuit or device you are testing.

4. If it is a DC signal with a large amplitude, the trace may be off-screen. Try increasing the vertical range (Volts/Div).

5. Press the [AUTO SET] button to let the oscilloscope automatically detect the signal and configure the display.

6. If there is still no waveform displayed, please contact Hantek technical support.

If your HANTEK DSO2D20 is not recognizing a USB flash drive, follow these steps:

1. Check if the USB flash drive is functioning properly in another device.

2. Confirm the capacity of the USB flash drive. It is recommended to use a drive that does not exceed 16GB.

3. Confirm that the USB flash drive is formatted with the FAT32 file system.

4. Restart the oscilloscope and re-insert the USB drive for inspection.

5. If you still cannot use the USB drive, please contact Hantek technical support.

If you are unable to get a stable trigger on your HANTEK DSO2D20, check the following:

1. Ensure the trigger source (in the TRIG MENU) is set to the same channel that the signal is connected to (e.g., CH1).

2. Check if the trigger level is adjusted correctly. The trigger level must be within the vertical range of the signal. You can press the TRIGGER LEVEL knob to automatically set the level to the signal’s center point.

3. Check if the triggering method (trigger type, e.g., Edge, Pulse) is correct for the input signal you are trying to capture.