1. Introduction
The OWON SDS220S is a high-performance digital oscilloscope designed for a wide range of electrical measurement and analysis tasks. It features two independent channels, a 200MHz bandwidth, and a 20M record length, making it suitable for detailed signal observation. This model also includes a built-in 25MHz arbitrary waveform generator, enhancing its utility for testing and development. With its 7-inch LCD display and various automatic measurement functions, the SDS220S provides clear visualization and efficient analysis of waveforms.
2. Key Features
- Dual-channel Oscilloscope with 25MHz Signal Generator (for SDS210S, 215S, 220S models).
- 200MHz Bandwidth.
- Dual-channel independent 1GS/s real-time sampling rate.
- 20M memory depth for extended waveform capture.
- Support for 30 Automatic Waveform Measurements.
- 6-digit High-precision Frequency Counter.
- FFT Spectrum Analysis capability.
- USB Host and Device interfaces for PC communication, supporting SCPI and LabVIEW functions for remote control and secondary development.
- 7-inch TFT LCD display (800*480 Pixels) for clear signal viewing.
3. Product Structure and Components
Familiarize yourself with the physical layout and controls of the SDS220S oscilloscope.
- Button and Knob Control Area: Used for adjusting settings, navigating menus, and controlling waveform display.
- Power Switch: Turns the device on or off.
- Function Key: Accesses various operational modes and settings.
- Oscilloscope Signal Input Port (CH1, CH2): Connect probes for signal acquisition.
- Signal Generator Output Port (Output): Provides arbitrary waveform output (for SDS210S, 215S, 220S).
- Probe Compensation (5V/1kHz Signal Output): Used for calibrating oscilloscope probes.
- USB Host Interface: Insert a USB drive to save or retrieve data.
- USB Device Interface: Used to connect to a PC for data transmission and remote control.
- Foldable Handle: For portability and adjusting viewing angle.
- Ventilation Holes: Ensures proper cooling of the device.
- Power Socket: Connects the power cord.
- Stand: Provides stable positioning for the oscilloscope.
4. Setup
- Unpacking: Carefully remove the oscilloscope and all accessories from the packaging. Verify that all items listed in the 'Accessories' section are present.
- Power Connection: Connect the provided power cord to the oscilloscope's power socket and then to a suitable AC power outlet.
- Power On: Press the Power Switch to turn on the oscilloscope. The device will perform a self-test and display the main interface.
- Probe Connection: Connect the oscilloscope probes to the CH1 and/or CH2 input ports. Ensure a secure connection.
- Probe Compensation (Calibration): Before taking measurements, it is recommended to compensate the probes. Connect the probe tip to the Probe Compensation output and the ground clip to the ground terminal. Adjust the probe compensation screw until a flat-top square wave is displayed on the screen.
5. Operating Instructions
5.1 General Operation
- Adjusting Vertical Scale: Use the 'Vertical Position' and 'Scale' knobs for CH1 and CH2 to adjust the vertical position and voltage per division.
- Adjusting Horizontal Scale: Use the 'Horizontal Position' and 'Scale' knobs to adjust the horizontal position and time per division.
- Trigger Settings: Use the 'Trigger' controls to stabilize waveforms. Options include Edge and Video trigger types.
5.2 Automatic Waveform Measurements
The SDS220S supports 30 automatic waveform measurements, providing quick analysis of signal parameters.
The cursor enables measurement of both X-axis (time) and Y-axis (voltage) values of the waveform, and supports all auto-measurement parameters.
This feature covers time values, counts, delay and phase values, amplitude values, and more, including Vmax, Vmin, Vp-p, Vavg, Vrms, and Frequency.
5.3 Signal Generator (for SDS210S, 215S, 220S)
The built-in 25MHz arbitrary waveform generator allows you to output various standard and arbitrary waveforms.
- Max output frequency: 25MHz
- Real-time sample rate: 125MSa/s
- Arbitrary waveform length: 8K
- Output amplitude: 5 mVpp to 3 Vpp (50Ω)
5.4 FFT Spectrum Analysis
Perform Frequency Domain analysis on your signals using the Fast Fourier Transform (FFT) function.
FFT converts time-domain signals into frequency-domain components, helping you measure harmonics, distortion, noise, and vibration in your system.
5.5 X-Y Mode
Use X-Y mode for phase comparison and component characteristic testing.
This mode provides a three-screen display for easy phase and component characteristic testing.
5.6 Saving and Recalling Data
The oscilloscope allows you to save and recall various data formats, including waveforms, reference waveforms, CSV files, and images for comparative analysis.
5.7 Remote Control and Secondary Development
The SDS220S can communicate with a PC via its USB Device interface. It supports SCPI (Standard Commands for Programmable Instruments) and LabVIEW functions. Free computer software and programming development demos are available to enable remote control of the instrument and facilitate secondary development.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the oscilloscope. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry environment away from direct sunlight and extreme temperatures.
- Probe Care: Handle probes carefully. Avoid bending or stressing the cables. Replace damaged probes immediately.
- Software Updates: Periodically check the OWON official website for firmware updates to ensure optimal performance and access to new features.
7. Troubleshooting
- No Power: Ensure the power cord is securely connected and the power outlet is functional. Check the power switch position.
- No Waveform Display: Verify probes are correctly connected to the input channels and the signal source. Check trigger settings and vertical/horizontal scale adjustments. Ensure the input signal is within the oscilloscope's measurement range.
- Unstable Waveform: Adjust the trigger level and trigger mode (e.g., Edge trigger for repetitive signals). Check the probe compensation.
- Incorrect Measurements: Ensure probes are properly calibrated (compensated). Verify the correct attenuation factor is set on the oscilloscope if using attenuated probes.
- PC Communication Issues: Ensure the USB cable is correctly connected. Install the necessary drivers and software on your PC. Refer to the OWON website for specific software and driver downloads.
8. Specifications
| Parameter | Specification |
|---|---|
| Model | SDS220S |
| Bandwidth | 200MHz |
| Sample Rate | 1GSa/S |
| Acquisition Mode | Normal, Peak detect, Averaging |
| Input Coupling | DC, AC, Ground |
| Input Impedance | 1MΩ±2%, in parallel with 20 pF±5 pF |
| Probe Attenuation Factor | 1X, 10X, 100X, 1000X |
| Record Length | 20M |
| Horizontal Scale (s/div) | 2 ns/div - 1000 s/div, step by 1-2-5 |
| Vertical Sensitivity | 2 mV/div - 10 V/div |
| Automatic Measurement | Period, Frequency, Mean, PK-PK, RMS, Max, Min, Top, Base, Amplitude, Overshoot, Preshoot, Rise Time, Fall Time, +PulseWidth, -PulseWidth, +Duty Cycle, -Duty Cycle, Delay A->B↑, Delay A->B↓, Cycle RMS, Cursor RMS, Screen Duty, Phase, +PulseCount, -PulseCount, RiseEdgeCnt, FallEdgeCnt, Area, and Cycle Area. |
| Waveform Math | +, -, ×, ÷, FFT |
| Waveform Storage | 16 waveforms |
| Lissajous' Bandwidth | Full bandwidth |
| Figure Phase Difference | ±3 degrees |
| Trigger Type | Edge, Video |
| Communication Interface | USB Host and Device |
| Frequency Counter | Available |
| Waveform Generator Specifications | |
| Standard Waveforms | Sine wave, square wave, ramp wave, pulse wave, arbitrary wave |
| Arbitrary Waveforms | Sinc, exponential rise, exponential decline, Gaussian, more than 160 kinds |
| Sine Frequency Range | 0.1Hz - 25MHz |
| Square Frequency Range | 0.1Hz - 5MHz |
| Ramp Frequency Range | 0.1Hz - 1MHz |
| Pulse Frequency Range | 0.1Hz - 1MHz |
| Arbitrary Waveform Frequency Range | 0.1Hz - 5MHz |
| Sample rate (Waveform Gen) | 125MSa/s |
| Amplitude (50Ω) | 0.005Vpp ~ 3Vpp |
| DC Offset Range | ±1(3V) (high resistance) |
| Channel (Waveform Gen) | 1 |
| Waveform Length | 8K |
| Vertical Resolution | 14 bit |
| Load Impedance | 50Ω |
| Display | 7 inch (800*480) LCD |
| Dimension (L x H x D) | 301mm x 152mm x 70mm |
| Weight | ≈ 1.1kg |
| Certification | CE |
| Origin | Mainland China |
| DIY Supplies | Electrical |
| Battery Included | No |
| High-concerned chemical | None |
9. Accessories
The following accessories are typically included with the OWON SDS220S. Please note that actual accessories may vary based on final delivery.
- Power Cord
- User Manual (this document)
- USB Cable
- Oscilloscope Probes (quantity may vary)
- Probe Adjustment Tool
- BNC Cable (specifically for SDS210S, 215S, 220S models)
10. User Tips
- Always perform probe compensation before critical measurements to ensure accuracy.
- When measuring high voltages, ensure your probes are rated for the appropriate voltage and use proper safety precautions.
- Utilize the automatic measurement functions to quickly obtain key parameters of your waveforms, saving time and reducing potential errors.
- For long-term data logging or detailed analysis, connect the oscilloscope to a PC and use the provided software.
- Regularly check the OWON website for updated firmware, which may offer performance improvements or new features.
11. Warranty and Support
OWON products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the official OWON website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.
