1. Introducció
The OWON SDS220S-200MHz is a high-performance dual-channel desktop oscilloscope integrated with a 25MHz waveform generator. This device features a 200MHz bandwidth, 1GSa/s sample rate, and a 20M record length, making it suitable for various electronic measurement and analysis tasks. It supports 30 automatic waveform measurements, FFT Spectrum Analysis, and PC communication via USB for remote control and secondary development using SCPI and LabVIEW. This manual provides essential information for the safe and effective operation of your SDS220S-200MHz oscilloscope.

Figure 1.1: OWON SDS220S-200MHz Multifunctional Digital Oscilloscope overview, highlighting its 2 channels, 20M record length, 1GSa/s real-time sample rate, and 25MHz waveform generator.
2. Informació de seguretat
To prevent electric shock or personal injury, and to avoid damage to the oscilloscope or connected equipment, observe the following safety precautions:
- Connexió a terra adequada: Ensure the oscilloscope is properly grounded. The instrument is grounded through the power cord's grounding conductor. To avoid electric shock, the grounding conductor must be connected to earth ground.
- Connect and Disconnect Properly: Connect the probe output to the oscilloscope input before connecting the probe to the circuit under test. Disconnect the probe from the circuit under test before disconnecting it from the oscilloscope.
- Observeu totes les classificacions de terminals: To prevent fire or shock hazard, observe all ratings and markings on the instrument. Consult the product manual for more information about ratings before making connections to the instrument.
- Use Proper Probes: Use only probes supplied with the instrument or recommended by the manufacturer. Ensure probes are rated for the voltage and current being measured. The included P4250 High Voltage Probe has a 100:1 attenuation ratio and is rated for 2KV Working Voltage (Vp-p).
- Avoid Exposed Circuitry: Do not touch exposed connections or components when power is present.
- No opereu amb sospita de fallades: If you suspect damage to the instrument, have it inspected by qualified service personnel.
- Mantenir les condicions seques: No feu servir l'instrument en llocs humits o secs.amp condicions.
- Operate in a Well-Ventilated Area: Assegureu-vos una ventilació adequada per evitar el sobreescalfament.
3. Producte acabatview
3.1 Característiques clau
- 200MHz Bandwidth, Dual Channel
- 1GSa/s Sample Rate (Dual-channel Independent)
- 20M Record Length
- Built-in 25MHz Waveform Generator (1CH AWG, 125MSa/s Real-time Sample Rate, 8K Arbitrary waveform length)
- 7-inch TFT LCD (800*480 pixels resolution)
- Support for 30 Automatic Waveform Measurements
- Anàlisi d'espectre FFT
- SCPI and LabVIEW support for remote control and secondary development
- USB Device interface for PC communication
- 16 Waveform Storage locations
- Comptador de freqüència
- Compact and lightweight design (1.1KG / 2.42 lbs)
3.2 Components del panell frontal

Figure 3.1: Front panel of the SDS220S, showing the display, button and knob control area, power switch, function keys, probe compensation output, oscilloscope signal input ports (CH1, CH2), and signal generator output port.
3.3 Components del panell posterior

Figure 3.2: Rear panel of the SDS220S, illustrating the foldable handle, ventilation holes, power socket, USB Device interface for PC connection, and the integrated stand.
3.4 Included Accessories: P4250 High Voltage Sonda
The SDS220S includes an extra P4250 High Voltage Probe. This probe is designed for high voltage measurements and features:
- Ample de banda: 250 MHz
- Attenuation Ratio: 100:1
- Resistència d'entrada: 100MΩ
- Vol. d'entrada màximatage: 2KV Working Voltage (Vp-p)

Figure 3.3: The P4250 High Voltage Probe, an included accessory, with its detailed specifications table.
4. Configuració
4.1 Desembalatge i inspecció
- Carefully remove the oscilloscope and all accessories from the packaging.
- Inspect the device for any signs of damage during transit. If damage is found, contact your supplier immediately.
- Verifiqueu que hi hagi tots els elements que figuren a la llista d'embalatge.
4.2 Connexió d'alimentació
- Connect the provided power cord to the power socket on the rear panel of the oscilloscope.
- Plug the other end of the power cord into a grounded AC power outlet. Ensure the power supply voltage compleix els requisits especificats a l'etiqueta del dispositiu.
4.3 Engegada inicial
- Press the power switch located on the front panel to turn on the oscilloscope.
- The device will perform a self-test and display the startup screen.
4.4 Connexió i compensació de la sonda
- Connect the BNC connector of the oscilloscope probe to one of the input channels (CH1 or CH2) on the front panel.
- Attach the probe tip to the probe compensation output (5V/1kHz signal) on the front panel.
- Adjust the compensation trimmer on the probe until a flat-top square wave is displayed on the screen. This ensures accurate measurements.
5. Instruccions de funcionament
5.1 Basic Oscilloscope Operation
The SDS220S allows for precise visualization and analysis of electrical signals.

Figure 5.1: The SDS220S oscilloscope in operation, displaying a waveform on its screen while connected to a circuit.
- Connecting to a Circuit: Connect the compensated probe to the desired test point on your circuit.
- Escala vertical (Volts/Div): Utilitza el Vertical knob to adjust the vertical sensitivity, changing the voltage scale per division on the display.
- Posició vertical: Utilitza el Posició knob in the Vertical section to move the waveform up or down on the screen.
- Horizontal Scale (Time/Div): Utilitza el Horitzontal knob to adjust the time base, changing the time scale per division.
- Posició horitzontal: Utilitza el Posició knob in the Horizontal section to shift the waveform left or right.
- Activació: El Disparador section controls when the oscilloscope starts acquiring data. Adjust the trigger level to stabilize the waveform. The SDS220S supports Edge and Video trigger types.
- Mesures automàtiques: Premeu el botó Mesura button to access the automatic measurement menu. The SDS220S supports 30 types of automatic measurements (e.g., Period, Frequency, Vpp, Vmax, Vmin, Rise Time, Fall Time).

Figure 5.2: The SDS220S displaying the menu for 30 automatic waveform measurements, allowing for detailed signal analysis.
5.2 Funcionament del generador de formes d'ona
The built-in 25MHz waveform generator can produce various standard and arbitrary waveforms.

Figure 5.3: The SDS220S functioning as both an oscilloscope (left) and a waveform generator (right), demonstrating its dual capabilities.
- Connexió de sortida: Connect the signal generator output port to the desired input of your circuit or to an oscilloscope channel for monitoring.
- Selecciona la forma d'ona: Use the function keys to select the desired waveform type (Sine, Square, Ramp, Pulse, Arbitrary). The SDS220S offers 5 standard waveforms and over 160 kinds of arbitrary waveforms.
- Ajusta els paràmetres: Use the control knobs and menu options to set the frequency (up to 25MHz), amplitude (5mVpp to 3Vpp), and DC offset of the generated waveform.
5.3 Funcions avançades
- FFT Spectrum Analysis: Premeu el botó Matemàtiques button and select FFT to analyze the frequency components of a signal.
- Mode XY: This mode is used to display the relationship between two signals, often for phase comparison.
- Save/Recall: The oscilloscope allows saving and recalling up to 16 waveforms for later analysis or comparison.
- Connectivitat amb PC: Connect the oscilloscope to a PC via the USB Device interface for remote control and data transfer. The device supports SCPI commands and LabVIEW for custom applications.

Figure 5.4: The SDS220S connected to a laptop via USB, demonstrating its capability for remote control and secondary development using SCPI and LabVIEW programari.
6. Manteniment
6.1 Neteja del dispositiu
To maintain the performance and appearance of your oscilloscope:
- Desconnecteu el cable d'alimentació abans de netejar.
- Utilitzeu un drap suau dampened with a mild detergent solution to clean the exterior surfaces. Do not use abrasive cleaners or solvents.
- For the display, use a soft, lint-free cloth specifically designed for screens.
- Ensure no liquid enters the device through ventilation holes or ports.
6.2 Cura de la sonda
- Store probes carefully to prevent damage to the tips or cables.
- Regularly check probe cables for cuts or damage. Replace damaged probes immediately.
- Recalibrate probes periodically, especially after significant temperature changes or if measurements appear inaccurate.
7. Solució De Problemes
Aquesta secció ofereix solucions a problemes comuns que podeu trobar.
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cord not connected; Power outlet faulty; Device fuse blown | Check power cord connection; Test power outlet; Contact service for fuse replacement. |
| No es mostra cap forma d'ona | Probe not connected; Input signal too small/large; Trigger settings incorrect; Channel turned off | Ensure probe is connected to input and circuit; Adjust Vertical Scale (Volts/Div); Adjust trigger level and mode; Ensure channel is enabled. |
| Forma d'ona distorsionada | Probe compensation incorrect; Probe bandwidth insufficient; Signal integrity issues | Perform probe compensation; Use a probe with appropriate bandwidth (e.g., P4250 for high frequency); Check signal source. |
| Waveform unstable | Trigger level or mode incorrect; Noise in signal | Adjust trigger level and mode; Use averaging mode to reduce noise. |
| Waveform generator output not working | Output cable not connected; Output enabled setting incorrect; Parameters set to zero | Connect output cable; Ensure waveform generator output is enabled in menu; Check frequency and ampconfiguració de la litud. |
8. Especificacions
8.1 Paràmetres de l'oscil·loscopi
| Paràmetre | Especificació |
|---|---|
| Ample de banda analògic | 200 MHz |
| Canals | 2 |
| SampTarifa ling | 1GSa/s |
| Max Record Length | 20M |
| Acoblament d'entrada | CC, CA, Terra |
| Vertical Sensitivity Range | 2 mV/div ~ 10 V/div |
| Resolució vertical | 8 bits (2 Channels Simultaneously) |
| Waveform Storage | 16 Formes d'ona |
| Tipus de disparador | Edge, Video |
| Interval de base de temps | 2ns/div ~ 1000s/div, Step by 1-2-5 |
| Waveform Math | +, -, ×, ÷, FFT |
| Impedància d'entrada | 1MΩ±2%, In Parallel with 20 pF±5 pF |
| Modes d’escaneig | Normal, Peakdetect, Averaging |
| Interfície de comunicació | USB Host and Device |
8.2 Waveform Generator Parameters
| Paràmetre | Especificació |
|---|---|
| Max Frequency Output | 25 MHz |
| Canals | 1CH AWG |
| Sampli Rate | 125MSa / s |
| Arbitrary Waveform Length | 8K |
| Sortida Ampla latitud | 5mVpp to 3 Vpp (50Ω) |
| Resolució vertical | 14 bits |
| Formes d'ona estàndard | Sine, Square, Ramp Wave, Pulse Wave, Arbitrary Wave |
| Arbitrary Waveforms | Sinc, Exponential Rise, Exponential Decline, Gaussian, more than 160 kinds |
| Offset de corrent continu | ±(3V) (High Resistance) |
8.3 Especificacions generals
| Paràmetre | Especificació |
|---|---|
| Mostra | 7-inch TFT LCD (800*480 pixels) |
| Dimensions del producte | 11.85 x 2.76 x 6 polzades (301 x 70 x 152 mm) |
| Pes de l'article | 2.42 lliures (1.1 kg) |
| Temperatura de funcionament | -10 °C ~ 55 °C |
| Humitat de funcionament | ≤90% (41°C) to ≤60% (50°C) |
| Altitud de funcionament | 3000 m |

Figure 8.1: A comprehensive table detailing the specifications for both the oscilloscope and waveform generator functions of the SDS220S.

Figure 8.2: The physical dimensions of the OWON SDS220S, highlighting its compact and ultra-thin body design.
9. Garantia i Suport
9.1 Informació de la garantia
OWON products are manufactured under strict quality standards. This product is covered by a limited warranty against defects in materials and workmanship. The specific warranty period and terms may vary by region and retailer. Please retain your proof of purchase for warranty claims.
9.2 Suport tècnic
For technical assistance, troubleshooting, or service inquiries, please contact your local OWON distributor or refer to the official OWON website for support resources and contact information. When contacting support, please have your product model (SDS220S) and serial number available.