Úvod a konecview
The OWON HDS1021M is a versatile handheld electrical test device designed for both professional and educational applications. It integrates the functionalities of a 20 MHz, single-channel digital oscilloscope with a comprehensive digital multimeter. This combination allows for detailed waveform analysis and precise electrical measurements, making it an essential tool for electronics design, assembly, repair, and electrical engineering.
The oscilloscope function provides a maximum real-time sample rate of 100MS/s and a record length of 6,000 points, enabling the capture and analysis of intricate electrical signals. It supports 18 automatic measurements for in-depth waveform analysis. The integrated multimeter offers manual and auto-ranging capabilities for measuring AC/DC voltage up to 400V, AC/DC current up to 20A, resistance up to 40 MΩ, and capacitance up to 100 µF. It also features a delta relative function, data-hold, continuity buzzer, and diode check.
Equipped with a 3.5-inch color TFT LCD (320 x 240 pixels), the HDS1021M ensures clear display of waveforms and measurement data. Its compact and portable design, powered by a rechargeable lithium-ion battery or AC adapter, makes it ideal for field use. The device includes a USB port for PC connectivity and comes with Microsoft Windows compatible software for data transmission and remote operation. It adheres to EN 61010-1:2001 safety standards and is rated for CAT II installations up to 400V.
Co je v krabici?
Upon unpacking your OWON HDS1021M, please verify that all the following components are present:
- OWON HDS1021M digital oscilloscope and multimeter unit
- Oscilloscope voltage sonda
- Sada testovacích vodičů (červený a černý)
- Extension module for large current measurement
- Extension module for small capacitance measurement
- Output terminal for testing of 1 kHz/5V square-wave signal
- Probe adjustment tools
- kabel rozhraní USB
- CD-ROM PC software
- Dobíjecí lithium-iontová baterie
- Battery charger/AC adapter (100 to 240V, 50/60Hz)
- Pokyny (tato příručka)

Image: The OWON HDS1021M unit displayed alongside its complete set of accessories, including probes, test leads, modules, cables, and power adapter.
Nastavení
- Instalace a nabíjení baterie:
Locate the battery compartment on the back of the unit. Insert the provided rechargeable lithium-ion battery, ensuring correct polarity. Connect the battery charger/AC adapter to the unit's power input and then to a standard electrical outlet (100-240V, 50/60Hz). Allow the unit to charge fully before first use. The charging indicator will provide status.
- Počáteční zapnutí:
Press and hold the power button until the display illuminates. The unit will perform a self-test and then display the main interface, typically defaulting to oscilloscope or multimeter mode.
- Probe and Test Lead Connection:
For oscilloscope measurements, connect the oscilloscope voltage probe to the BNC input connector. Ensure a secure connection. For multimeter functions, connect the red and black test leads to the appropriate input jacks (V/Ω/C, mA/A, COM) based on the measurement type. Refer to the markings on the unit for correct lead placement.
- PC Software Installation (Optional):
Insert the provided CD-ROM into your computer's drive. Follow the on-screen instructions to install the Microsoft Windows compatible PC software. This software enables data transmission and remote operation of the HDS1021M. Connect the unit to your PC using the supplied USB interface cable.

Image: The OWON HDS1021M unit securely placed within its protective carrying case, highlighting its portability.
Návod k obsluze
Režim osciloskopu
The oscilloscope function allows you to visualize electrical signals as waveforms. Use the dedicated buttons and rotary encoder to navigate menus and adjust settings.
- Výběr režimu: Press the "OSC" button to enter oscilloscope mode.
- Vertikální stupnice (volty/dílek): Adjust the vertical scale to fit the signal amplitude on the screen.
- Horizontální měřítko (čas/dílek): Upravte horizontální měřítko na view the signal's time characteristics.
- Spouštění: Set the trigger level and type (edge, video, pulse, slope, alternate) to stabilize the waveform display. The "AUTOSET" button can automatically adjust settings for a stable display.
- Rozměry: Access automatic measurement functions (e.g., Period, Frequency, Peak-to-Peak, RMS) to quantify waveform parameters.
- Ukládání průběhů: Save up to four waveforms in the internal memory for later recall and analysis.
Režim multimetru
The multimeter function enables precise measurement of various electrical properties. Ensure test leads are connected to the correct input jacks for the desired measurement.
- Výběr režimu: Press the "MULTIMETER" button to switch to multimeter mode.
- Výběr funkce: Use the function buttons (e.g., V~, V-, A~, A-, Ω, F) to select the desired measurement type (AC Voltage, DC svtage, AC Current, DC Current, Resistance, Capacitance).
- V rozsahu: Choose between manual ranging (select range yourself) or auto-ranging (unit automatically selects optimal range).
- Delta Relative Function: Set a reference value and display subsequent measurements as deviations from that reference.
- Pozastavení dat: Freeze the current reading on the display for easier documentation.
- Continuity and Diode Check: Use these functions to test circuit continuity and diode functionality.
Údržba
Proper maintenance ensures the longevity and accuracy of your OWON HDS1021M.
- Čištění: Use a soft, dry cloth to clean the unit's exterior. For stubborn dirt, a slightly damp cloth with mild detergent can be used, but ensure no liquid enters the device. Do not use abrasive cleaners or solvents.
- Skladování: When not in use, store the unit in its protective carrying case in a cool, dry environment, away from direct sunlight and extreme temperatures.
- Péče o baterie: If storing for extended periods, fully charge the lithium-ion battery before storage and recharge it every few months to maintain battery health.
- Probe and Lead Inspection: Regularly inspect probes and test leads for any signs of damage, such as frayed wires, cracked insulation, or bent connectors. Replace damaged accessories immediately to ensure safety and accurate measurements.
- Aktualizace softwaru: Periodically check the OWON official website for any available firmware or PC software updates to ensure optimal performance and access to new features.
Odstraňování problémů
This section provides solutions to common issues you might encounter with your HDS1021M.
| Problém | Možná příčina | Řešení |
|---|---|---|
| Jednotka se nezapne. | Battery is depleted or not properly installed. AC adapter is not connected or faulty. | Ensure battery is fully charged and correctly inserted. Connect the AC adapter and verify power supply. |
| V režimu osciloskopu se nezobrazuje žádný průběh. | Probe not connected, signal too small/large, incorrect trigger settings, or incorrect vertical/horizontal scale. | Check probe connection. Adjust Volts/Div and Time/Div settings. Use "AUTOSET" function. Verify trigger level and type. |
| Multimeter readings are inaccurate or unstable. | Test leads are faulty, incorrect function selected, or measurement range is unsuitable. | Inspect test leads for damage. Ensure correct function (V, A, Ω, F) is selected. Try auto-ranging or manually select an appropriate range. |
| PC software does not recognize the device. | USB cable issue, driver not installed correctly, or software compatibility problem. | Ensure USB cable is securely connected. Reinstall PC software and drivers. Check OWON website for updated drivers or software. |
Specifikace
Detailed technical specifications for the OWON HDS1021M:
| Funkce | Specifikace |
|---|---|
| Zobrazit | 3.5" color TFT-LCD (320 x 240 pixels) |
| Šířka pásma | 20 MHz |
| Kanály | Singl |
| Maximální S v reálném časeample Rate | 100 MS/s |
| Délka záznamu | 6,000 bodů |
| Maximum AC and DC Voltage Měřeno | 400V |
| Maximum AC and DC Current Measured | 20 amp |
| Maximum Resistance Measured | 40 MΩ |
| Maximum Capacitance Measured | 100 µF |
| Zdroj napájení | Rechargeable lithium ion battery or AC adapter (100 to 240V, 50/60Hz) |
| Rozměry (V x Š x H) | 180 x 115 x 40 mm (7.09 x 4.53 x 1.57 palce) |
| Hmotnost | 455 g (1.00 lb) |
| Bezpečnostní standard | EN 61010-1:2001, CAT II 400V |
Support and Manufacturer Information
For further assistance, technical support, or warranty inquiries, please contact the manufacturer:
- Výrobce: Fujian Lilliput Optoelectronics Technology (operates under the OWON brand)
- Informace o společnosti: Founded in 1993 in China, with a U.S. office in City of Industry, CA. The company meets International Organization for Standardization (ISO) standard 9001.
- Oficiální uživatelská příručka (PDF): For the most comprehensive and detailed instructions, please refer to the official PDF user manual available zde.
- Online zdroje: Visit the official OWON website for product updates, drivers, and additional support resources.
Note: Specific warranty terms and contact details may vary by region. Please refer to the documentation included with your product or the manufacturer's official webstránky s nejaktuálnějšími informacemi.





