1. Product Overview
The TOOLTOP TH201 is a versatile 4-in-1 handheld device integrating an Infrared Thermal Imaging Camera, a Dual-Channel Oscilloscope, a 20000 Counts True-RMS Digital Multimeter, and a Signal Source. This compact and powerful tool is designed for professionals and enthusiasts requiring comprehensive electrical and thermal analysis capabilities in a single unit.

2. Safety Information
WARNING: Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always use the device within its specified voltage and current limits.
- Do not operate the device in wet environments or near flammable gases or vapors.
- Ensure test leads and probes are in good condition before use. Replace any damaged accessories immediately.
- Do not attempt to open or modify the device. Refer all servicing to qualified personnel.
- Always disconnect power to the circuit under test before making connections or changing settings, especially when measuring current.
- Use appropriate personal protective equipment (PPE) when necessary.
3. Getting Started
3.1 Package Contents
Verify that all items listed below are included in your package:
- 1 x TOOLTOP TH201 Multifunction Device
- 2 x Oscilloscope Probes
- 1 x Pair Test Leads (for Multimeter)
- 1 x BNC to Alligator Clip Cable
- 1 x USB Cable
- 1 x English User Manual
3.2 Charging the Device
The device is powered by a 3000mAh rechargeable lithium battery. To charge, connect the device to a DC5V/2A power source using the provided USB cable. A charger is not included. The low battery indicator will alert you when charging is needed.
3.3 Initial Power-On and Basic Navigation
Press and hold the power button to turn on the device. The device features a 3.2-inch TFT color screen with 320x240 resolution and 8 adjustable brightness levels. Navigate through menus and settings using the directional buttons and the 'OK' button.
3.4 Important Notes
- Thermal Imager Calibration: The thermal imaging detector includes a mechanical control calibration plate for non-uniformity correction. This plate calibrates every 10 seconds, causing a brief lag of approximately 1-2 seconds. This is normal operation and ensures accurate measurements.
- Macro Lens Usage: The macro lens is specifically designed for close-range PCB inspection at about 3 cm. For distances beyond this, switch to normal thermal imaging mode to avoid blurred images.
- Mute Setting: To mute the device, select either the 【OSC】 (Oscilloscope) or 【DMM】 (Digital Multimeter) mode. Then, press the 【MENU】 key, navigate to the 'Beep function' option, and turn it off.
4. Operating Instructions
4.1 Switching Modes
The device offers four primary modes, accessible via dedicated buttons on the front panel:
- IR: Infrared Thermal Imager
- DMM: Digital Multimeter
- OSC: Oscilloscope
- AWG: Arbitrary Waveform Generator (Signal Source)
4.2 Thermal Imager Operation
The thermal imager features an ISR 288x240 display resolution with a 96x96 infrared sensor, capturing images at 20Hz. It measures temperatures from -20°C to +550°C with an accuracy of ±2°C or ±2%.

4.2.1 Hot/Cold Spot Tracking
The device supports 5 measurement points for rapid thermal capture and imaging:
- Global Maximum Temperature
- Center Region Maximum Temperature
- Center Point Temperature
- Center Region Minimum Temperature
- Local Minimum Temperature

4.2.2 Color Palettes
Choose from 15 available color palette modes to visualize thermal data effectively, including White Hot, Black Hot, Fusion, Iron, Deep Blue, Lava, Rain, Green, Red Hot, and Deep Purple.

4.2.3 Macro Lens
The device includes a macro lens for detailed inspection of small components like PCBs. Swipe left on the device to switch to the macro lens. Remember to use it for objects approximately 3 cm away; for other distances, use the normal thermal imaging mode.

4.2.4 Applications
The thermal imager is suitable for various applications:
- Vehicle Repair and Inspection: Identify overheating components in engines or other systems.
- Circuit Board Inspection: Detect hot spots indicating faulty components or short circuits.
- HVAC Inspection: Visualize heating pipe layouts, detect blockages, leaks, and assess insulation efficiency.
- Motor Equipment Inspection: Identify unbalanced loads, overloads, or wiring errors to prevent hazards.


4.3 Oscilloscope Operation
The dual-channel oscilloscope offers 200MSa/s high-speed sampling and 70MHz analog bandwidth for single-channel, or 40MHz for dual-channel measurements. It supports 12 customizable waveform parameters.

4.3.1 One-Button Auto-Scope
Utilize the auto-scope function for quick waveform display. The oscilloscope allows for adjustable amplitude and timebase to fine-tune your view.

4.3.2 Triggering Modes
Accurately capture waveforms using three triggering modes:
- Auto: Continuously captures waveforms without meeting specific trigger conditions.
- Normal: Captures waveforms only when trigger conditions are met.
- Single: Captures the first waveform signal that meets the trigger conditions.

4.4 Digital Multimeter Operation
The 20000 counts True-RMS multimeter supports various measurements including voltage, current, resistance, capacitance, frequency, duty cycle, diode, continuity, and relative value measurements. It features intelligent protection with auto-ranging and a 10A/250V fuse.

4.4.1 Display Characteristics
The multimeter display provides clear information including port insertion prompts, real-time data display, measurement data, and Max/Min values.

4.4.2 Intelligent Protection
The device incorporates intelligent protection features such as auto-ranging and a 10A/250V fuse to ensure safe and reliable operation.

4.5 Signal Source Operation
The signal source (AWG) can generate various waveforms:
- Sine Wave: 10Hz-100kHz (1-2-3-5 step mode)
- Triangle Wave: 10Hz-100kHz (1-2-3-5 step mode)
- Square Wave: 10Hz-4MHz (5MHz for reference only) (1-2-3-5 step mode)
The Square Wave Duty Cycle is adjustable from 10%-90% in 10% increments. Output voltage is 3Vpp (output impedance approx. 50Ω).

4.6 Data Storage
The device includes 4GB of built-in storage, capable of storing up to 2,000 DMM data sets and 2,000 OSC waveforms. It also supports saving thermal images (JPG) and videos (AVI), facilitating experimental recording and data analysis.

5. Maintenance
5.1 Cleaning
Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the device is powered off and disconnected from any power source before cleaning.
5.2 Battery Care
To prolong battery life, avoid fully discharging the battery frequently. If storing the device for an extended period, charge it to approximately 50% and recharge every few months.
5.3 Storage
Store the device in a cool, dry place, away from direct sunlight and extreme temperatures (-10℃ to +60℃; <90%RH).
6. Troubleshooting
This section addresses common issues you might encounter with your TOOLTOP TH201 device.
- Blurred Thermal Images: Ensure you are using the correct lens for the distance. The macro lens is for approximately 3 cm; for other distances, use the normal thermal imaging mode.
- Thermal Imager Lag: A 1-2 second lag during thermal imaging is normal due to the mechanical calibration plate correcting non-uniformity every 10 seconds.
- No Sound/Beep: Check the mute setting. Go to 【OSC】 or 【DMM】 mode, press 【MENU】, and ensure the 'Beep function' is turned on if you desire sound.
- Device Not Powering On: Ensure the battery is sufficiently charged. Connect the device to a DC5V/2A power source using the USB cable and allow it to charge.
- Inaccurate Multimeter Readings: Verify that test leads are properly connected and in good condition. Ensure the correct measurement function is selected.
7. Specifications
7.1 Thermal Imager Parameters
| Parameter | Value |
|---|---|
| Sensor Type | Uncooled IR (vox) |
| Display Resolution | 288 (H) x 240 (V) |
| Infrared Sensor | 96x96 |
| Image Capture Rate | 20Hz |
| Temperature Range | -20°C ~ +550°C |
| Measurement Accuracy | ±2°C or ±2% |
| Emissivity | 0.01 ~ 0.99 |
| Palette | White Hot, Black Hot, Fusion1, Fusion 2, Iron 1, Iron 2, Deep Blue, Color 1, Color 2, Lava, Rain, Green, Red Hot, Deep Purple |
| Field of View (FOV) | 50.0°(H) x 50.0°(V) |
| Focus | 1.35mm (fixed, non-adjustable) |
| Measurement Points | 5 (center, highest, lowest, area max, area min) |
| Image Format | JPG (photo), AVI (video) |
| Storage Capacity | TF card (internal 4GB) |
7.2 Oscilloscope Parameters
| Parameter | Value |
|---|---|
| Analog Bandwidth | Single Channel: 70MHz; Dual Channel: 40MHz |
| Maximum Real Time Sampling Rate | 200MSa/s |
| Channels | 2 |
| Storage Depth | 2K |
| Vertical Resolution | 8 bits |
| Coupling Mode | DC, AC |
| Input Impedance | Approx. 1MΩ |
| Trigger Mode | Auto, Normal, Single |
| Trigger Edge Selection | Rising / Falling edge |
| Vertical Sensitivity Range | 10mV/div - 10V/div |
| Vertical Accuracy | ±(5% + 0.2div) |
| Voltage Measurement Parameters | Vp-p, Vp, Vmax, Vmin, Vavg, Vrms |
| Time Measurement Parameters | Freq, Period, +Width, -Width, +Duty, -Duty |
| Non-Linearity | ±1 bit |
| Attenuation | Vertical ±4.0, Horizontal ±6.0 |
| Time Base Range | 6ns/div - 50s/div, adjustable in 1-2-5 steps |
| Horizontal Accuracy | ±(0.01% + 0.1div) |
| Automatic Measurement Accuracy | ±(5% + 0.2div) |
7.3 Multimeter Parameters
| Parameter | Value |
|---|---|
| Display | 20000 Counts |
| DMM Measurement Speed | 3 times/second |
| DC Voltage | 200.00mV/2.0000V/20.000V/200.00V/1000.0V |
| AC Voltage (True RMS) | 200.00mV/2.0000V/20.000V/200.00V/750.0V |
| DC Current | 2000.0mA/10.000A |
| AC Current (True RMS) | 2000.0mA/10.000A |
| Resistance | 200.00Ω/2.0000kΩ/20.000kΩ/200.00kΩ/2.0000MΩ/20.000MΩ/200.00MΩ |
| Capacitance | 9.999nF/99.99nF/999.9nF/9.999uF/99.99uF/999.9uF/9.999mF/99.99mF |
| Frequency | 9.999Hz-9.9999MHz (input ≥ AC 500mVp-p; higher frequency requires higher input voltage) |
| Diode Test | Open-circuit voltage approx. 3V, maximum test current approx. 2mA |
| Continuity Test | Buzzer sounds at <50Ω; displays OL at ≥200Ω |
| Auto Range Switching | Applicable to all measurement functions |
| Overrange Indication | O.L (Over load) |
| Dynamic Data Window | Continuously refreshes to display real-time measurement data |
| Fuse | 10A/250V |
7.4 Signal Source Parameters
| Parameter | Value |
|---|---|
| Waveform Frequency (Sine Wave) | 10Hz-100kHz (1-2-3-5 step mode) |
| Waveform Frequency (Triangle Wave) | 10Hz-100kHz (1-2-3-5 step mode) |
| Waveform Frequency (Square Wave) | 10Hz-4MHz (5MHz for reference only) (1-2-3-5 step mode) |
| Square Wave Duty Cycle | 10%-90% (adjustable in 10% increments, 1-2-3-5 step mode) |
| Output Voltage | 3Vpp (output impedance approx. 50Ω) |
7.5 Other Parameters
| Parameter | Value |
|---|---|
| Display | 320x240; 3.2-inch TFT color screen |
| Backlight Brightness | 1-8 levels adjustable |
| Battery | 3000mAh rechargeable lithium battery |
| Low Battery Indicator | Support |
| Operating Time | About 5 hours |
| Operating Environment | 0℃ ~ +40℃; <75%RH |
| Overall Dimensions | 173mm x 89mm x 38mm |
| Silent Mode | Supported |
| Auto Power-off | 5min-60min or disabled |
| Power | DC5V/2A (charger not Included) |
| Storage Capacity | DMM: 2000 records; OSC: 2000 waveforms |
| Storage Environment | -10℃ ~ +60℃; <90%RH |
| Weight | 296g / 10.4 oz (0.65 lb) (excluding accessories) |
8. User Tips
- Optimize Thermal Imaging: For precise thermal readings, ensure the emissivity setting matches the material being inspected. Adjusting this can significantly improve accuracy.
- Oscilloscope Triggering: Experiment with Auto, Normal, and Single trigger modes to find the best setting for stable waveform capture, especially for intermittent signals.
- Multimeter Auto-Ranging: Take advantage of the auto-ranging feature for quick measurements, but be aware of the maximum limits for each range to avoid overloads.
- Data Management: Regularly transfer stored DMM data and OSC waveforms to a computer via the USB cable for long-term analysis and to free up device storage.
9. Manufacturing Process
The TOOLTOP TH201 devices are assembled in a dedicated factory environment, ensuring quality control and efficient production. The manufacturing process involves skilled technicians working on assembly lines, utilizing specialized equipment to produce each unit.