1. Introduction
This manual provides detailed instructions for the operation and maintenance of your FNIRSI 2C23T and 2C53T Digital Oscilloscope Multimeter Signal Generator. These devices integrate the functions of an oscilloscope, a multimeter, and a signal generator into a single, portable unit, designed for efficient and precise electronic measurements.
Please read this manual thoroughly before using the device to ensure proper operation and to prevent damage.
2. Product Overview
2.1 Key Features
- 3-in-1 Functionality: Combines Oscilloscope, Multimeter, and Signal Generator.
- Dual-Channel Design: Isolated channels prevent interference for more accurate signal detection.
- High-Performance Architecture: Utilizes ARM + FPGA + high-speed ADC for robust waveform capture.
- One-Key Measurement: Efficient automatic adjustment for quick waveform display.
- Intelligent Anti-Burn Protection: Built-in double fuse and overload protection for enhanced safety.
- High-Resolution Display: 2.8-inch true color screen with 320*240 HD resolution.
- Long Battery Life: 3000mAh lithium battery provides extended working hours.
- Durable Construction: ABS+silicone shell material for anti-fall and anti-shock protection.
- Type-C Charging: Convenient charging anytime.
- Expandable Stand: For easy placement and viewing.
- Multi-language Support: English, Russian, Portuguese, Japanese, German.
3. Specifications
3.1 General Parameters (Applicable to both 2C23T and 2C53T)
| Parameter | Value |
|---|---|
| Display Screen | 2.8 inch HD color screen |
| Resolution | 320 * 240 |
| Charging | TYPE-C (5V/1A) |
| Battery | 3000mAh lithium battery |
| Product Volume | 167*89*35mm |
| Weight | 300g |
| Language Support | English, Russian, Portuguese, Japanese, German |
3.2 Model 2C23T Specifications
Oscilloscope Parameters (2C23T)
| Parameter | Value |
|---|---|
| Channel | Dual Channel |
| Sampling Rate | 50M |
| Analog Bandwidth | 10M (dual-channel independent 10M) |
| Memory Depth | 32kb |
| Input Impedance | 1MΩ |
| Time Base Range | 50ns-10s |
| Vertical Sensitivity | 20mV/div-10V/div (X1 step) |
| Maximum Measurement Voltage | ±400V |
| Trigger Mode | Automatic, Normal, Single |
| Trigger Type | Rising edge, Falling edge |
| Display Mode | YT/Scrolling |
| Coupling | AC/DC |
| Waveform Screenshot Saving | Support |
| Computer Waveform Viewing | Support |
Multimeter Parameters (2C23T)
| Function | Range | Accuracy |
|---|---|---|
| DC Voltage | 9.999V/99.99V/999.9V | ±(0.5%+3) |
| AC Voltage | 9.999V/99.99V/750.0V | ±(1%+3) |
| DC Current | 9999uA/99.99mA/999.9mA/9.999A | ±(1.2%+3) |
| AC Current | 9999uA/99.99mA/999.9mA/9.999A | ±(1.5%+3) |
| Resistance | 9.999MΩ/999.9KΩ/99.99KΩ/9.999KΩ/999.9Ω | ±(0.5%+3) |
| 99.99MΩ | ±(1.5%+3) | |
| Capacitance | 999.9uF/99.99uF/9.999uF/999.9nF/99.99nF/9.999nF | ±(2.0%+5) |
| 9.999mF/99.99mF | ±(5.0%+20) | |
| Temperature | (-55~1300℃)/(-67~2372℉) | ±(2.5%+5) |
| Diode | √ | |
| On-off (Continuity) | √ | |
| Firewire Detection (Live Line) | √ |
Function Signal Generator Parameters (2C23T)
| Parameter | Value |
|---|---|
| Channel | Single channel |
| Frequency | 1Hz-2MHz |
| Amplitude | 0.1-3.3V |
| Output Duty Cycle | 0-100% |
| Waveforms | Sine, Square, Triangle, Half-wave, Full-wave, Noise wave, DC (7 types) |
3.3 Model 2C53T Specifications
Oscilloscope Parameters (2C53T)
| Parameter | Value |
|---|---|
| Channel | Dual-channel |
| Sampling Rate | 250MS/s |
| Analog Bandwidth | 50M (dual-channel independent 50M) |
| Input Impedance | 1MΩ |
| Time Base Range | 10ns-20s |
| Vertical Sensitivity | 10mV/div-10V/div (X1 gear) |
| Maximum Measurement Voltage | ±400V |
| Trigger Mode | Automatic, Normal, Single |
| Trigger Type | Rising edge, Falling edge |
| Display Mode | Y-T/Scroll/X-Y |
| Coupling | AC/DC |
| Afterglow | OFF, 500ms, 1s, ∞ |
| Arithmetic | 8 kinds of basic arithmetic + FFT arithmetic |
| Waveform Screenshot Saving | √ |
| Export Waveform Image | √ |
| Cursor Measurement | √ |
Multimeter Parameters (2C53T)
| Function | Range | Accuracy |
|---|---|---|
| DC Voltage | 1.9999V/19.999V/199.99V/1000V | ±(0.5%+3) |
| AC Voltage | 1.9999V/19.999V/199.99V/750.0V | ±(1%+3) |
| DC Current | 19.999mA/199.99mA/1.9999A/9.999A | ±(1.2%+3) |
| AC Current | 19.999mA/199.99mA/1.9999A/9.999A | ±(1.5%+3) |
| Resistance | 19.999MΩ/1.9999MΩ/199.99KΩ/19.999KΩ | ±(0.5%+3) |
| 1.9999KΩ/199.99Ω | ±(2.0%+3) | |
| Capacitance | 999.9uF/99.99uF/9.999uF/999.9nF/99.99nF/9.999nF | ±(2.0%+5) |
| 9.999mF/99.99mF | ±(5.0%+20) | |
| Temperature | (-55~1300℃)/(-67~2372℉) | ±(2.5%+5) |
| Diode | √ | |
| On-off (Continuity) | √ |
Function Signal Generator Parameters (2C53T)
| Parameter | Value |
|---|---|
| Channel | Single channel |
| Frequency | 1Hz-50KHz |
| Amplitude | 0.1-3V |
| Waveforms | Sine wave, rectangular wave, sawtooth wave, half wave, full wave, positive step wave, anti-step wave, exponential rise, exponential fall, DC signals, multi-audio, Sink pulse, Lorentz wave (13 types) |
4. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged.
4.1 Standard Package (2C23T)
- Host Unit (1)
- User Manual (1)
- 10X Probe (1)
- Alligator Clip Probe (1)
- Multimeter Pen Cable (1)
- Type-C Charging Cable (1)
4.2 High-End Package (2C23T)
- Host Unit (1)
- User Manual (1)
- 10X Probes (2)
- Alligator Clip Probe (1)
- Multimeter Pen Cable (1)
- Type-C Charging Cable (1)
4.3 2C53T Package
- Main Unit (1)
- 10X Probe (1)
- Red and Black Alligator Clip Probe (1)
- Multimeter Pen (1)
- USB-C Charging Cable (1)
- Storage Bag (1)
- Instruction Manual (1)
5. Setup and Initial Use
5.1 Charging the Device
- Connect the provided Type-C charging cable to the device's charging port.
- Connect the other end of the cable to a 5V/1A USB power adapter (not included) or a computer USB port.
- The device will indicate charging status on the screen. Ensure the device is fully charged before first use for optimal battery life.
5.2 Powering On/Off
- To power on, press and hold the power button (usually marked with a power symbol) until the screen illuminates.
- To power off, press and hold the power button until the device shuts down.
- The device features an automatic shutdown function to conserve battery.
5.3 Attaching Probes and Leads
- For oscilloscope measurements, connect the 10X probe(s) to the CH1 and/or CH2 BNC connectors. Ensure a secure connection by twisting the BNC connector.
- For multimeter measurements, connect the multimeter pen cables to the appropriate input jacks (e.g., VΩmA, COM, 10A). Refer to the on-screen prompts or markings on the device for correct connections based on the measurement type.
- For signal generator output, connect the alligator clip probe to the DDS output port.
6. Operating Instructions
6.1 Navigating the Interface
The device features a user-friendly interface with dedicated buttons for various functions:
- MOVE: Adjust waveform position.
- CURSOR: Activate and control measurement cursors.
- TRIGGER: Access trigger settings (Auto, Normal, Single).
- PRM: Parameter menu.
- CH1/CH2: Select or enable/disable channels.
- AUTO: One-key automatic adjustment for quick waveform display.
- SAVE: Save waveform screenshots.
- MENU: Access the main menu for settings and functions.
- Directional buttons (Up/Down/Left/Right) and a central 'OK' button for navigation and selection.
6.2 Oscilloscope Function
- Connect the oscilloscope probe to the desired test point.
- Select the appropriate channel (CH1 or CH2).
- Press the AUTO button for automatic waveform adjustment.
- Adjust Time Base (horizontal scale) and Vertical Sensitivity (vertical scale) using the menu or dedicated controls to fine-tune the waveform display.
- Use the TRIGGER button to set trigger mode and type (rising/falling edge) for stable waveform capture.
- To save a waveform screenshot, press the SAVE button. Saved waveforms can be viewed on the device or exported to a computer.
6.3 Multimeter Function
Switch to multimeter mode using the appropriate button or menu option. Connect the multimeter leads to the circuit under test.
- DC/AC Voltage Measurement: Select voltage mode and connect leads in parallel with the component.
- DC/AC Current Measurement: Select current mode and connect leads in series with the component. Ensure the correct current input jack (mA or 10A) is used.
- Resistance Measurement: Select resistance mode and connect leads across the component (power off the circuit).
- Capacitance Measurement: Select capacitance mode and connect leads across the capacitor (ensure capacitor is discharged).
- Diode Test: Select diode mode to test diode forward voltage drop.
- Continuity Test: Select continuity mode to check for open or short circuits (audible buzzer).
- Temperature Measurement: Use the included temperature probe (if applicable) and select temperature mode.
- Live Line Detection (2C23T): Use this function to identify live wires.
6.4 Signal Generator Function
- Switch to signal generator mode.
- Select the desired waveform type (Sine, Square, Triangle, etc.).
- Adjust the frequency and amplitude using the controls.
- For 2C23T, adjust the output duty cycle (0-100%).
- Connect the alligator clip probe from the DDS output to the circuit requiring a signal input.
6.5 Language Settings
The device supports multiple languages. Navigate to the main menu and find the language settings option to switch between English, Russian, Portuguese, Japanese, and German.
7. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For prolonged storage, charge the battery to approximately 50% every few months to maintain battery health.
- Probe Care: Handle probes and leads carefully. Avoid bending or twisting cables excessively. Inspect them regularly for damage.
- Firmware Updates: Check the manufacturer's website periodically for firmware updates to ensure optimal performance and new features. The device supports firmware upgrades.
8. Troubleshooting
- Device does not power on:
- Ensure the battery is charged. Connect the device to a power source using the Type-C cable.
- Press and hold the power button for a few seconds.
- No waveform displayed on oscilloscope:
- Check probe connections to the device and the circuit under test.
- Ensure the correct channel is selected and enabled.
- Press the AUTO button to automatically adjust settings.
- Adjust Time Base and Vertical Sensitivity manually.
- Check trigger settings; try "Auto" mode first.
- Multimeter readings are inaccurate:
- Ensure multimeter leads are correctly connected to the device and the circuit.
- Verify the correct measurement function (voltage, current, resistance, etc.) is selected.
- Check the condition of the multimeter leads for any damage.
- Ensure the circuit under test is within the device's measurement range.
- Signal generator not outputting signal:
- Ensure the alligator clip probe is correctly connected to the DDS output.
- Verify the signal generator function is active and parameters (frequency, amplitude) are set.
- Device freezes or becomes unresponsive:
- Try a soft reset by pressing and holding the power button until the device restarts.
- If the issue persists, contact customer support.
9. User Tips
- Utilize Auto-Adjustment: For quick setup, especially with unknown signals, always start by pressing the AUTO button in oscilloscope mode. This often provides a good starting point for further fine-tuning.
- Understand Probe Attenuation: Remember to set the oscilloscope's probe attenuation correctly (e.g., X1 or X10) to match your physical probe setting for accurate voltage readings.
- Safety First: Always be mindful of voltage and current limits. The device has anti-burn protection, but exceeding specified maximums can still cause damage or pose a safety risk.
- Regular Charging: Keep the device charged, especially before field work, to take full advantage of its 8-hour endurance.
- Explore Languages: If English is not your primary language, switch to one of the supported languages (Russian, Portuguese, Japanese, German) for a more comfortable user experience.
- Data Management: Regularly save important waveform screenshots and export them to your computer for detailed analysis and record-keeping.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official FNIRSI website. Keep your purchase receipt as proof of purchase for warranty claims.
