1. Introduction
The FNIRSI-5012H is a versatile, highly practical, and cost-effective handheld oscilloscope designed for maintenance and R&D industries. It features a real-time sampling rate of up to 500MS/s and a 100MHz analog bandwidth. This manual provides essential information for the safe and effective operation of your device, including setup, operation, maintenance, and troubleshooting.
2. Safety Information
Please read all safety warnings and instructions carefully before using the device to prevent injury or damage.
- High Voltage Warning: The built-in high voltage protection module can withstand up to 400V continuous voltage and 600V peak voltage. However, always ensure the probe is set to the correct attenuation (e.g., 10X) when measuring high voltages to prevent damage to the oscilloscope.
- Environmental Conditions: Operate the device in a dry environment, away from direct sunlight, extreme temperatures, and excessive dust.
- Battery Safety: Use only the specified charging method. Do not disassemble, puncture, or expose the battery to high temperatures.
- Maintenance: Refer all servicing to qualified personnel. Do not attempt to repair the device yourself.
- Proper Use: Use the oscilloscope only for its intended purpose of measuring electrical signals.
3. Product Overview
The FNIRSI-5012H is a compact and powerful handheld oscilloscope. Below are images illustrating its design, key features, and components.
Figure 3.1: The FNIRSI-5012H handheld oscilloscope shown alongside its product packaging. The device features a yellow casing and a clear display screen.
Figure 3.2: Close-up view of the FNIRSI-5012H display, emphasizing its 100MHz bandwidth and 500MS/s sampling rate. Key features like long standby, wave manager, one-click AUTO, and one-click storage are also highlighted.
Figure 3.3: The oscilloscope presented as an engineering debugging tool, illustrating its applicability in various circuits such as DIY production, PWM drivers, oscillation circuits, mains circuits, amplifier circuits, switch circuits, inverter circuits, and bus circuits.
Figure 3.4: The FNIRSI-5012H oscilloscope held in a hand, demonstrating its compact and portable design, making it suitable for handheld operation.
Figure 3.5: Detailed view of the FNIRSI-5012H, pointing out key physical features: (1) Probe jack, (2) Power switch, and (3) Charging port. This highlights the connectivity and power management aspects of the device.
Figure 3.6: The FNIRSI-5012H oscilloscope displayed with its included accessories, specifically the data line (approx. 1m) and the oscilloscope probe line (approx. 115cm). The image also provides the device's dimensions: 114mm (4.5") height, 74mm (2.9") width, and 33mm (1.3") thickness.
4. Setup
- Unpacking: Carefully remove the oscilloscope and all accessories from the packaging. Verify that all components listed in Figure 3.6 are present.
- Initial Charging: Before first use, fully charge the built-in 3000mAh lithium battery. Connect the provided data line to the charging port (3 in Figure 3.5) and a suitable USB power adapter (not included). The charging indicator will show the charging status. A full charge allows for approximately 8 hours of continuous use.
- Probe Connection: Connect the oscilloscope probe line to the probe jack (1 in Figure 3.5) on the top of the device. Ensure a secure connection.
- Power On: Press and hold the power switch (2 in Figure 3.5) to turn on the device.
5. Operating Instructions
5.1 Basic Operation
- Power On/Off: Press and hold the power button to turn the device on or off.
- Navigation: Use the directional buttons (up, down, left, right) to navigate through menus and adjust parameters. The central button typically acts as an 'OK' or 'Enter' key.
- Menu Access: Press the 'MENU' button to access the main settings and functions.
5.2 Waveform Measurement
- AUTO Function: Press the 'AUTO' button for automatic waveform display and measurement. This function simplifies setup by automatically adjusting time base and vertical sensitivity.
- Trigger Modes: The device supports full trigger functions:
- Single: Captures a single waveform when the trigger condition is met.
- Normal: Captures waveforms only when the trigger condition is met.
- Automatic: Continuously captures waveforms, even without a trigger, making it suitable for stable signals.
- Waveform Storage: The FNIRSI-5012H has a built-in 64M storage space, capable of storing up to 2000 waveform pictures.
- To save the current waveform, press the 'SAVE' button. The process is quick and requires no complex prompts.
- To manage stored waveforms, access the waveform file manager through the menu. It supports thumbnail browsing, viewing details, page turning, and deletion.
- Time Base and Vertical Sensitivity: Use the appropriate buttons (e.g., 'MODE' or directional keys in specific modes) to manually adjust the time base (horizontal scale) and vertical sensitivity (voltage scale) as needed for detailed analysis.
- AC/DC Coupling: Use the 'AC/DC' button to switch between AC coupling (blocks DC component) and DC coupling (shows both AC and DC components) based on your measurement requirements.
- Probe Attenuation: Ensure the probe attenuation setting on the oscilloscope (e.g., '1X/10X' button) matches the physical probe's attenuation setting to ensure accurate readings.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the oscilloscope in a cool, dry place. Ensure the battery is partially charged (around 50%) before long-term storage to prolong its lifespan.
- Battery Care: Avoid fully discharging the battery frequently. Recharge the device when the battery level is low.
- Probe Care: Handle the oscilloscope probe carefully. Avoid bending or damaging the cable and connector.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Battery is depleted. | Connect the device to a charger and allow it to charge for at least 30 minutes before attempting to power on again. |
| No waveform displayed. | Probe not connected or faulty; incorrect trigger settings; signal too small or too large. | Ensure probe is securely connected. Press 'AUTO' button. Adjust vertical sensitivity (V/div) and time base (s/div). Check trigger level and mode. |
| Waveform is unstable or noisy. | Improper grounding; external interference; incorrect trigger settings. | Ensure proper grounding. Minimize external electromagnetic interference. Adjust trigger level and mode to stabilize the waveform. |
| Incorrect voltage readings. | Probe attenuation setting mismatch. | Verify that the probe attenuation setting on the oscilloscope (e.g., 1X or 10X) matches the physical probe's setting. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | FNIRSI |
| Model Number | FNIRSI-5012H |
| Sampling Rate | 500 MS/s |
| Analog Bandwidth | 100 MHz |
| Display | 2.4-inch full-color TFT-LCD, 320*240 resolution |
| Storage Space | Built-in 64M (stores up to 2000 waveform pictures) |
| Battery | 3000mAh high-quality lithium battery |
| Battery Life | Up to 8 hours continuous use |
| Trigger Function | Single, Normal, Automatic |
| High Voltage Protection | Up to 400V continuous, 600V peak |
| Item Weight | 260 g |
| Package Dimensions | 19.71 x 10.01 x 7.19 cm |
| Color | Yellow |
9. Warranty and Support
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or the manufacturer, FNIRSI. Keep your purchase receipt as proof of purchase for any warranty claims.
While specific warranty details are not provided in this manual, FNIRSI products are designed for reliability and performance. For the most current warranty information and support resources, please visit the official FNIRSI website or contact their customer service.
