1. Introduction
The TOOLTOP ET120MPro is a versatile 2-in-1 device combining a high-performance digital oscilloscope and a signal source generator. Designed for a wide range of applications, from home appliance testing and automotive diagnostics to scientific research and product development, it offers a 120MHz analog bandwidth and a 500MS/s sampling rate. Its compact design and intuitive controls make it an essential tool for professionals and hobbyists alike.
2. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged:
- 1 x TOOLTOP ET120MPro Digital Oscilloscope
- 1 x 100MHz Oscilloscope Probe
- 1 x USB Charging Cable (Type-C)
- 1 x English User Manual
- 1 x Cloth Bag
3. Product Overview
The ET120MPro features a compact, handheld design with a durable silicone protective cover. The front panel includes a 320x240 LCD screen and an array of control buttons for easy operation.
3.1. Device Layout
Key Controls:
- MENU: Access main menu, navigate back.
- F1: Voltage parameter adjustment.
- F2: Time parameter adjustment.
- SAVE: Save current signal waveform.
- AC/DC: Input coupling selection.
- 1X/10X: Magnification adjustment.
- 50%: Trigger voltage to average value of waveform.
- TRIG: Trigger mode selection.
- EDGE: Trigger edge selection.
- MODE/OK: Waveform zoom/movement, confirm selection.
- Directional Arrows (Up/Down/Left/Right): Adjust parameters, move waveform.
- STOP: Stop/Run waveform acquisition.
- AUTO: Automatic adjustment of time base and vertical sensitivity.
3.2. Dimensions and Portability
- Size: 124mm x 80mm x 35mm
- Weight: Approximately 187g
4. Specifications
| Feature | Specification |
|---|---|
| Brand Name | TOOLTOP |
| Model Number | ET120MPro |
| DIY Supplies | Electrical |
| Band Width | 120MHz |
| Digital Channels | 1 |
| Display Resolution | 320*240 Pixels |
| Standby time | About 5 hours |
| Maximum sampling rate | 500MSa/S (Software equivalent) |
| Storage Depth | 12.8div |
| Rising time | <3nS |
| Voltage accuracy | 10% |
| Frequency accuracy | 1% |
| Time base range | 6ns~50S |
| Max test voltage | 1X: 80Vpp, 10X: 800Vpp |
| Vertical Sensitivity | 50mV~100V |
| Battery | Built-in Lithium battery |
| Trigger slope | Rising/Falling |
| Save | 2500 DSO waveforms |
| Trigger mode | Auto/Normal/Single |
| Coupling method | DC/AC |
| Display area | 50mm x 40mm |
| Back light | White, 8 levels of brightness |
| Display technology | TFT |
| Charging | DC5V/1A/2A (Type-C) |
| Auto shutdown | No operation for 15 mins |
| Use conditions | 0°C~+40°C; <75%RH |
| Save conditions | -10°C~+60°C; <90%RH |
5. Setup
5.1. Initial Charging
Before first use, fully charge the built-in lithium battery using the provided USB Type-C cable and a compatible DC5V/1A/2A power adapter (not included). The device supports fast charging via its Type-C port. A full charge provides approximately 5 hours of continuous operation.
5.2. Probe Connection
Connect the 100MHz oscilloscope probe to the BNC connector on the top of the device. Ensure a secure connection. Adjust the probe's attenuation setting (1X or 10X) as needed, and match this setting on the oscilloscope via the 1X/10X button.
6. Operating Instructions
6.1. Basic Oscilloscope Operation
Power on the device by pressing and holding the power button. The main waveform display will appear.
6.1.1. Auto Waveform Adaptation
For quick setup, press the AUTO button. The oscilloscope will automatically adjust the time base and vertical sensitivity to display a stable waveform.
6.1.2. Waveform Measurement Functions
The ET120MPro can accurately measure 12 different parameters. Use the MODE/OK button to cycle through and display these measurements on the screen.
- Voltage Parameters: Vpp (Peak-to-Peak Voltage), Vrms (Root Mean Square Voltage), Vavg (Average Voltage), Vp (Positive Peak Voltage), Vmax (Maximum Voltage), Vmin (Minimum Voltage).
- Time Parameters: F (Frequency), T (Period), T+ (Positive Pulse Width), T- (Negative Pulse Width), Du+ (Positive Duty Cycle), Du- (Negative Duty Cycle).
6.1.3. Waveform Adjustment
Use the directional arrow keys to adjust various waveform parameters:
- Up/Down Arrows: Shrink/zoom the waveform vertically, move the waveform up/down.
- Left/Right Arrows: Zoom in/out the waveform horizontally, move the waveform left/right.
- MODE/OK: Used for waveform zoom/movement confirmation.
6.1.4. Scan Modes
The device supports three scan modes:
- AUTO: Collects signals continuously, regardless of whether trigger conditions are met.
- NORMAL: Collects the last signal that meets the trigger conditions.
- SINGLE: Collects the first signal that meets the trigger conditions.
6.2. Signal Generator Operation
The ET120MPro can output three types of signals: Sine, Ramp, and Square waves. You can adjust their parameters using the directional keys and MODE/OK button.
- Sine/Triangle Wave Output: Frequency range 10Hz to 100KHz.
- Square Wave Output: Frequency range 10Hz to 3MHz, with adjustable duty cycle from 10% to 90%.
- Output Voltage: 0-3Vpp for all signal types.
6.3. Waveform Storage and Management
The device can store up to 2500 DSO waveforms. To save a waveform:
- Press the SAVE key to save the current signal waveform.
- To access saved waveforms, press the MENU key to enter the main menu.
- Select "Waveform" from the menu.
- Press MODE/OK to enter the waveform file manager.
- Select the desired waveform and press MODE/OK to view it in full screen.
- Press MODE/OK again to display vertical sensitivity, time base, and background grid lines.
6.4. Display Settings
The device allows adjustment of display settings for optimal viewing:
- Backlight Adjustment: Navigate through the menu to adjust the 8 levels of backlight brightness.
- Grid Switch: Toggle the display of the grid lines on the waveform screen.
- Deep Switch: Adjust the depth of the waveform display.
6.5. Data Transmission
The ET120MPro supports data transmission to a computer for further analysis. Connect the device to a PC running Windows 10 or above using the provided USB cable. The dedicated software (available for download at https://drive.google.com/file/d/1znLIIZuLTAypJ-0BFK64Pqjml-SNGMKH/view?usp=sharing) allows for viewing and managing waveforms on your computer.
Video 1: Demonstration of ET120MPro features including waveform measurement, adjustment, storage, backlight, grid, deep switch, and signal source output.
7. Maintenance
7.1. Cleaning
Regularly clean the device with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the device. Do not use abrasive cleaners or solvents.
7.2. Storage
When not in use, store the oscilloscope in a dry, cool place, away from direct sunlight and extreme temperatures. The recommended storage conditions are -10°C to +60°C with less than 90% relative humidity. Use the provided cloth bag for protection.
7.3. Battery Care
To prolong battery life, avoid fully discharging the device frequently. If storing for an extended period, charge the battery to approximately 50-70% and recharge every few months.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low battery or power button not pressed correctly. | Charge the device fully. Press and hold the power button for a few seconds. |
| No waveform displayed | Probe not connected, incorrect input coupling, or signal out of range. | Ensure probe is securely connected. Check AC/DC coupling. Use AUTO function or manually adjust vertical sensitivity and time base. |
| Unstable waveform | Incorrect trigger settings. | Adjust trigger level, trigger mode (Auto/Normal/Single), and trigger slope (Rising/Falling). Use AUTO function. |
| Signal generator output not working | Incorrect signal type or parameters selected. | Verify the selected signal type (Sine, Ramp, Square) and ensure frequency, amplitude, and duty cycle (for square wave) are set correctly. |
| Data transmission issues | Incorrect software, cable, or PC operating system. | Ensure you are using the correct software for Windows 10 or above. Check USB cable connection. |
9. User Tips
- For Beginners: The AUTO function is highly recommended for quickly obtaining a stable waveform display, especially when you are unfamiliar with manual settings.
- Maximize Battery Life: Utilize the auto-shutdown feature (15 minutes of no operation) to conserve battery.
- Clear Display: Adjust the backlight (8 levels available) and toggle the grid lines for optimal viewing in different lighting conditions.
- Signal Generation: Experiment with the Sine, Ramp, and Square wave outputs to understand their characteristics and applications. Remember to adjust amplitude, frequency, and duty cycle for square waves.
- Waveform Analysis: Make use of the 12 automatic measurement functions (Vpp, F, etc.) for quick and accurate analysis of your signals.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.
