Introduction
This manual provides detailed instructions for the safe and effective operation of your Eujgoov TOOLTOP ET120MPro Portable Oscilloscope and Signal Generator. Please read this manual thoroughly before using the device and keep it for future reference.
Package Contents
Verify that all items listed below are present and in good condition upon opening the package. If any items are missing or damaged, please contact your vendor.
- 1 x ET120MPro Portable Oscilloscope
- 1 x USB Cable
- 2 x Instruction Manuals
- 1 x Storage Bag
- 1 x Test Probe
- 11 x Accessories (e.g., probe tips, clips)
Product Overview
The Eujgoov TOOLTOP ET120MPro is a versatile 2-in-1 device combining a 120MHz bandwidth oscilloscope with a DDS signal generator. It features a 2.4-inch color display and supports waveform storage.
Image: Front view of the ET120MPro portable oscilloscope, displaying a waveform on its screen and showing the various control buttons and navigation pad.
Key Features:
- 120 MHz Waveform Bandwidth
- 500 MS/s Real-time Sampling Rate
- Integrated DDS Signal Generator (10 Hz - 3 MHz)
- 2.4-inch 320x240 Color Display with 8-level adjustable backlight
- Storage for up to 2500 Waveforms
- Automatic Measurement Functions (Vpp, Vrms, Vavg, Vp, Vmax, Vmin, F, T, T+, T-, Du+, Du-)
- Auto/Standard/Single Trigger Modes
- AC/DC Coupling
- Compact ABS body with 2200 mAh rechargeable lithium battery
Setup
Charging the Device:
The ET120MPro is equipped with a built-in 3.7V, 2200mAh rechargeable lithium battery. Connect the device to a 5V/1A or 5V/2A power adapter using the provided USB Type-C cable for charging. The charging indicator will show the charging status.
Connecting the Test Probe:
- Connect the BNC connector of the test probe to the input port of the oscilloscope.
- Ensure the probe is securely attached.
- Attach the ground clip of the probe to the circuit's ground point.
- Connect the probe tip to the test point on the circuit.
Operating Instructions
Power On/Off:
Press and hold the power button (usually located on the side or top) to turn the device on or off.
Oscilloscope Mode:
Upon powering on, the device typically defaults to oscilloscope mode. The screen will display the waveform and measurement parameters.
Image: Close-up of the ET120MPro oscilloscope screen, showing a waveform and various measurement parameters like Vpp, Vrms, and frequency.
Automatic Adjustment (AUTO button):
Press the AUTO button to automatically adjust the time base and vertical sensitivity for optimal waveform display. This is useful for quickly getting a stable waveform.
Menu Navigation:
Use the MENU button to access the main menu. Navigate through options using the arrow keys and confirm selections with the MODE/OK button.
Image: Detailed view of the control panel of the ET120MPro, highlighting the MENU, AUTO, and navigation buttons.
Coupling Mode (AC/DC):
Press the AC/DC button to switch between AC and DC coupling. DC coupling shows the entire signal, including its DC component. AC coupling blocks the DC component, showing only the AC variations.
Probe Attenuation (1X/10X):
Use the 1X/10X button to match the probe attenuation setting. Ensure this matches the physical switch on your probe for accurate measurements.
Trigger Settings (TRIG, EDGE):
- Press TRIG to cycle through trigger modes: Auto, Normal, Single.
- Press EDGE to select trigger edge: Rising edge or Falling edge.
- Adjust the trigger level using the up/down arrow keys.
Waveform Storage and Recall:
Press the SAVE button to save the current waveform. To recall saved waveforms, enter the main menu, select "Waveform", and use the MODE/OK button to browse the waveform file manager. The device can store up to 2500 waveforms.
Image: The ET120MPro display showing a gallery of saved waveforms, demonstrating its storage capability.
Signal Generator Mode:
The built-in DDS signal generator can output various waveforms. Access this function through the main menu.
- Sine Wave/Triangle Wave: 10 Hz - 100 kHz
- Square Wave: 10 Hz - 3 MHz (with 10% - 90% duty cycle adjustment)
- Output Voltage: 0 - 3 Vpp
Use the menu options and arrow keys to select the waveform type, frequency, duty cycle (for square wave), and output voltage.
Maintenance
Cleaning:
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the device is powered off and disconnected from any power source before cleaning.
Storage:
Store the oscilloscope in a cool, dry place, away from direct sunlight and extreme temperatures. Use the provided storage bag to protect it from dust and physical damage.
Battery Care:
To prolong battery life, avoid fully discharging the battery frequently. If storing for extended periods, charge the battery to approximately 50% every few months.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or power button not pressed correctly. | Charge the device using the USB-C cable. Ensure the power button is pressed and held for a few seconds. |
| No waveform displayed. | Probe not connected, incorrect trigger settings, or signal too weak/strong. | Check probe connection. Press AUTO button. Adjust trigger level and time base/vertical sensitivity manually. Verify probe attenuation setting. |
| Unstable waveform. | Incorrect trigger settings or noisy signal. | Adjust trigger level and trigger mode (try Normal or Single). Ensure proper grounding. |
| Signal generator not outputting. | Incorrect settings or output not enabled. | Verify waveform type, frequency, and voltage settings in the signal generator menu. Ensure output is enabled. |
Specifications
| Parameter | Value |
|---|---|
| Waveform Bandwidth | 120 MHz |
| Max Sampling Rate | 500 MS/s |
| Max Test Voltage | 1X: 80 Vpp, 10X: 800 Vpp |
| Standby Time | Approx. 5 hours (up to 8 hours) |
| Voltage Accuracy | 10% |
| Storage Depth | 12.8 div |
| Vertical Sensitivity | 50 mV - 100 V |
| Trigger Modes | Auto/Standard/Single |
| Rise Time | < 3 ns |
| Number of Channels | 1 |
| Coupling Mode | DC, AC |
| Screen Resolution | 320x240 |
| Frequency Accuracy | 1% |
| Input Impedance | 1 MΩ |
| Time Base Range | 6 ns - 50 s |
| Trigger Slope | Rising edge/Falling edge |
| Power Supply | DC 5V/1A/2A |
| Automatic Configuration | Auto time base and vertical sensitivity adjustment |
| Auto Measurement Functions | Vpp, Vrms, Vavg, Vp, Vmax, Vmin, F, T, T+, T-, Du+, Du- |
| Signal Generator Output (Sine/Triangle) | 10 Hz - 100 kHz |
| Signal Generator Output (Square) | 10 Hz - 3 MHz |
| Square Wave Duty Cycle | 10% - 90% |
| Output Voltage (Signal Gen) | 0 - 3 Vpp |
| Battery | 3.7V, 2200 mAh rechargeable lithium battery |
| Display | 2.4 inch Color Screen |
| Material | ABS |
| Item Weight | 361 g |
| Dimensions | 19.5 x 14.5 x 5 cm |
Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Eujgoov customer service through their official channels. Keep your purchase receipt as proof of purchase.