1. Introduction
This manual provides detailed instructions for the safe and effective use of your Handheld Digital Oscilloscope, model SCO_1_500K. This device features a 2.4-inch TFT display with 320*240 resolution, a 2.5MHz sample rate, 200KHz actual bandwidth, and 500KHz analogue bandwidth (for sinewaves). It is designed for a wide range of applications including automotive maintenance, appliance repair, educational purposes, and general research.
The oscilloscope includes an efficient one-click AUTO function for quick waveform display and a complete trigger function (single, normal, automatic) suitable for both periodic analogue and non-periodic digital signals. It supports voltage signal measurements up to ±400V and offers a one-button waveform saving feature.
2. Safety Information
Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or damage to the device.
- Do not expose the device to moisture or extreme temperatures.
- Ensure the device is charged using a 5V power source only.
- Do not attempt to disassemble or modify the device.
- Always use appropriate probes and clips for the measurement range (±40V for standard, ±400V for high configuration).
- Avoid touching exposed circuits when the device is powered on.
3. Product Overview
The SCO_1_500K Handheld Digital Oscilloscope is designed for portability and ease of use. It features a clear TFT display and intuitive button controls.
3.1. Components
3.2. Button Functions
| Button | Short Press | Touch & Hold | Save Key Description |
|---|---|---|---|
| OK/MID | Confirm | Center the arrow | Open the corresponding saved waveform |
| AUTO/LEFT | Automatic adjustment | Automatic calibration interface | Press and hold to delete the image |
| SAVE/BACK | Waveform save/return | Go to the Save screen | Tap to exit the screen |
| UP-ADD | Up/Increase | Continuous + | + |
| SEL/RIGHT | Switching categories | Go to the menu page | Press and hold to delete the image |
| DOWN-DIS | Decline/Decrease | Continuous - | - |
4. Specifications
| Parameter | Value |
|---|---|
| Model Number | SCO_1_500K |
| Rate of Adoption | 2.5MHz |
| Analog Bandwidth | 500KHz |
| Actual Bandwidth | 200KHz |
| Measuring Range | X1/±40V; X10/±400V |
| Input Impedance | 1MΩ |
| Depth of Storage | 1Kb |
| Parameter Type | 12 |
| PWM Output Frequency | 1K-80KHz |
| PWM Output Duty | 0-100% |
| PWM Output Voltage | 3.3V |
| Function Waveforms | 17 Waveforms |
| Function Output Frequency | 1-1KHz |
| Function Output Voltage Range | 0-3.3V (fixed) |
| Display | 2.4" TFT 320*240 Resolution |
| Charging Voltage | 5V |
| Battery Capacity | 1 * 3.7V, 600mAh (included) |
| Upper Computer Support | Not supported for now |
| Firmware Upgrade | Support |
| Item Size | 50 * 100mm / 1.97 * 3.94in |
5. Setup
5.1. Initial Charging
Before first use, ensure the oscilloscope is fully charged. Connect the device to a 5V power source using a compatible charging cable. The battery capacity is 600mAh (3.7V).
5.2. Connecting Probes/Clips
Depending on your configuration, your oscilloscope comes with either a clip (standard configuration) or a probe and a clip (high configuration).
- Standard Configuration (±40V): Connect the provided clip to the input terminal of the oscilloscope.
- High Configuration (±400V): Connect the appropriate probe or clip to the input terminal. Ensure the probe's attenuation setting matches your measurement requirements.
6. Operating Instructions
6.1. Basic Waveform Measurement
- Power on the oscilloscope.
- Connect the probe/clip to the circuit you wish to measure.
- Press the AUTO/LEFT button for an efficient one-click automatic adjustment. This will display the measured waveform without tedious manual adjustments.
- Observe the waveform and measurement data on the 2.4-inch TFT display.
6.2. Waveform Display Functions
The oscilloscope can display various waveform types, including sine waves, square waves, half-waves, and sink pulse waves.
6.3. Waveform Saving
To save the currently displayed waveform:
- Press the SAVE/BACK button.
- Only the part of the waveform currently visible on the screen will be saved.
- To open a saved waveform, short press the OK/MID button.
- To exit the save screen, tap the SAVE/BACK button.
6.4. PWM Signal Output
The oscilloscope can generate PWM signals with adjustable frequency and duty cycle.
- Frequency: 1K-80KHz
- Duty Cycle: 0-100%
- Voltage: 3.3V
6.5. Function Waveform Output
The device can output 17 different waveforms with a fixed voltage range.
- Frequency: 1-1KHz
- Voltage Range: 0-3.3V (fixed)
7. Firmware Upgrade
The oscilloscope supports firmware upgrades. There are two parts that can be upgraded: the display part and the bottom part.
- To upgrade the display part: Press and hold the OK/MID button while turning on the machine.
- To upgrade the bottom part: Press and hold the SAVE/BACK button while turning on the machine.
Follow the on-screen instructions to complete the upgrade process. Ensure the correct firmware is used and verified before proceeding.
8. Applications
The Handheld Digital Oscilloscope is a versatile tool suitable for various fields:
- Automotive Maintenance: Diagnosing electrical systems and sensors.
- Appliance Maintenance: Troubleshooting electronic components in household appliances.
- DIY Learning: Educational purposes for understanding electronic circuits and signals.
- Research and Teaching: Practical demonstrations and experiments in electronics.
- 220V Measurement: Capable of measuring higher voltages with appropriate probes (up to ±400V).
9. Troubleshooting
- Waveform not captured correctly with AUTO function: Some complex or non-standard signals may not be accurately captured by the automatic adjustment. In such cases, manual adjustment of settings (e.g., time base, voltage division) may be required.
- Device not powering on: Ensure the battery is sufficiently charged. Connect to a 5V power source and allow it to charge for some time.
- Inaccurate readings: Verify that the correct probe attenuation (X1 or X10) is selected on both the probe and the oscilloscope settings, if applicable. Ensure probes are properly connected.
10. User Tips
- For signals that are difficult to stabilize with the AUTO function, try adjusting the trigger level and time base manually for better visualization.
- Regularly check for firmware updates to ensure optimal performance and access to new features.
- When saving waveforms, remember that only the visible portion of the waveform on the screen is stored. Adjust the display to capture the desired segment before saving.
11. Maintenance
To ensure the longevity and proper functioning of your oscilloscope, follow these maintenance guidelines:
- Keep the device clean and dry. Use a soft, dry cloth to wipe the exterior.
- Avoid exposing the device to dust, dirt, or corrosive substances.
- Store the oscilloscope in a cool, dry place when not in use.
- Handle probes and clips with care to prevent damage.
12. Warranty and Support
This product comes with a one-year warranty in China. The warranty does not cover artificial damage or system problems resulting from unauthorized disassembly or modification of the device. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact the seller or authorized service center. Do not attempt to repair the device yourself, as this may void the warranty.
