1. Introduction
The TOOLTOP AOS03 is a versatile 3-in-1 handheld device integrating a dual-channel oscilloscope, a digital multimeter, and a signal generator. Designed for professionals, hobbyists, and educational institutions, it offers a 3.5-inch IPS display, 50MHz bandwidth, 280MSa/s real-time sampling rate, and 25,000 counts for precise measurements. This manual provides detailed instructions for the safe and effective operation of your device.
Image 1.1: The TOOLTOP AOS03 highlighting its three integrated functions: oscilloscope, multimeter, and signal generator.
2. Safety Information
Please read and understand all safety warnings and operating instructions before using this device. Failure to do so may result in injury or damage to the device.
- Always ensure the device is in good working condition before use.
- Do not exceed the maximum input ratings for voltage, current, or resistance.
- Use only the provided test leads and accessories.
- Avoid using the device in wet or damp environments.
- Do not attempt to open or repair the device; refer servicing to qualified personnel.
- Always disconnect power from the circuit under test before making connections.
- Be aware of live circuits and potential electrical hazards.
3. Package Contents
Verify that all items listed below are present in your package. If any items are missing or damaged, contact your vendor immediately.
- TOOLTOP AOS03 3-in-1 Device
- Oscilloscope Probes (x2)
- Multimeter Test Leads (Red & Black)
- USB Type-C Cable
- Storage Bag
- User Manual (this document)
- BNC to Alligator Clip Cable
- Various adapters and connectors
Image 3.1: All components included in the TOOLTOP AOS03 product package.
4. Product Overview
Familiarize yourself with the various parts and controls of the TOOLTOP AOS03 device as illustrated below.
Image 4.1: Front and side view of the AOS03 with numbered labels for key components.
- Dual Channel Input: Connect oscilloscope probes here.
- 3.5-inch VA Reverse Color Screen: Displays waveforms, measurements, and menu options.
- USB Charging Port/Data Cable Connection: For charging and PC communication.
- Square Wave Input/Ground Terminal: For signal generator output or ground reference.
- Function Menu Selection Buttons (F1-F4): Correspond to on-screen menu options.
- Power Switch / Multimeter Relative Value Button: Long press to power on/off, short press for relative value in multimeter mode.
- Automatic Waveform Measurement / Manual Range Switching: Auto-ranging or manual adjustment.
- Hold Current Data / Long Press to Save Measurement Data: Freezes display or saves data.
- Switching Oscilloscope/Multimeter Mode: Toggles between primary functions.
- Set Value Adjustment: Adjusts parameters in menus.
- Set Value Left / Previous Page: Navigates menus or adjusts values left.
- Set Value Right / Next Page: Navigates menus or adjusts values right.
- 10A Current Jack: For high current measurements.
- mA Current Jack: For milliampere current measurements.
- COM Jack: Common ground for multimeter measurements.
- Black Test Lead Negative Jack: Connect black multimeter test lead.
- Red Test Lead Positive Jack: Connect red multimeter test lead.
5. Setup
5.1 Charging the Device
Connect the provided USB Type-C cable to the device's USB port (labeled 3 in Image 4.1) and to a standard USB power adapter (not included) or a computer USB port. The battery indicator on the screen will show charging status.
5.2 Powering On/Off
To power on the device, long press the power button (labeled 6 in Image 4.1). To power off, long press the same button until the screen turns off.
5.3 Initial Mode Selection
Upon powering on, the device may default to the last used mode. Use the MODE button (labeled 9 in Image 4.1) to switch between Oscilloscope, Multimeter, and Signal Generator modes.
6. Operating Modes
6.1 Oscilloscope Mode
In Oscilloscope mode, the device displays real-time waveforms. Connect the oscilloscope probes to the dual channel input (labeled 1 in Image 4.1) and to the circuit under test.
- Vertical Sensitivity: Adjust using the menu buttons (F1-F4) or navigation wheel to set Volts/Div.
- Time Base: Adjust using the menu buttons (F1-F4) or navigation wheel to set Time/Div.
- Trigger Function: Select Auto, Normal, or Single trigger modes. Adjust trigger level to stabilize the waveform.
- Automatic Measurement: Press the AUTO button (labeled 7 in Image 4.1) for automatic waveform parameter measurements.
Image 6.1: The AOS03 in dual-channel oscilloscope mode, showing two distinct waveforms.
6.2 Multimeter Mode
Switch to Multimeter mode using the MODE button. Connect the multimeter test leads to the appropriate jacks (COM, VΩHz, mA, 10A) based on the measurement type.
- Voltage Measurement (AC/DC): Connect leads to COM and VΩHz. Select AC or DC voltage.
- Current Measurement (AC/DC): Connect leads to COM and mA or 10A depending on expected current. Select AC or DC current.
- Resistance Measurement: Connect leads to COM and VΩHz.
- Capacitance Measurement: Connect leads to COM and VΩHz.
- Frequency Measurement: Connect leads to COM and VΩHz.
- Diode Test: Connect leads to COM and VΩHz.
6.3 Signal Generator Mode
In Signal Generator mode, the device can output various waveforms. Connect the signal output (e.g., via the square wave input/ground terminal, labeled 4 in Image 4.1) to the desired input of another device.
- Waveform Selection: Use the menu to select Sine, Square, Triangular, Full Wave, Half Wave, or Sawtooth waveforms.
- Frequency Adjustment: Adjust the output frequency using the navigation controls.
- Amplitude Adjustment: Adjust the peak-to-peak voltage (VPP) as needed.
Image 6.2: The AOS03 screen showing the signal generator menu for waveform selection and parameter adjustment.
6.4 Waveform Storage and PC Connection
The device can store waveform data. Long press the SAVE button (labeled 8 in Image 4.1) to save the current waveform. Stored waveforms can be accessed and transferred to a computer.
- Saving Waveforms: In Oscilloscope mode, press and hold the SAVE button to store the current waveform as an image file.
- Connecting to PC: Connect the device to a computer using the USB Type-C cable. The device will appear as a removable disk.
- Accessing Data: Navigate to the appropriate folder on the removable disk to view or download saved waveform images for further analysis.
Image 6.3: The AOS03 connected to a computer, demonstrating access to stored waveform data files.
7. Maintenance
- 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. Use the provided storage bag for protection.
- Battery Care: For prolonged storage, charge the battery to approximately 50% every three months to maintain battery health.
- Calibration: Periodic calibration by qualified service personnel is recommended to ensure accuracy.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or faulty power button. | Charge the device for at least 30 minutes. Ensure the power button is pressed correctly. |
| No waveform displayed in oscilloscope mode. | Probes not connected, incorrect trigger settings, or signal too small/large. | Check probe connections. Adjust trigger level, vertical sensitivity (Volts/Div), and time base (Time/Div). Use AUTO button. |
| Multimeter readings are incorrect. | Incorrect mode selection, faulty test leads, or exceeding measurement range. | Verify mode and lead connections. Check test leads for damage. Ensure measurement is within device specifications. |
| Cannot connect to PC or access files. | Faulty USB cable, incorrect port, or driver issue. | Try a different USB port or cable. Ensure the device is powered on. No specific drivers are usually needed for mass storage. |
9. Specifications
Key technical specifications for the TOOLTOP AOS03 device are listed below.
- Display: 3.5-inch IPS Color Screen
- Oscilloscope Bandwidth: 50MHz
- Sampling Rate: 280MSa/s (Real-time)
- Recording Depth: 128Kb
- Multimeter Counts: 25,000
- AC Voltage: 0V-750.00V
- DC Voltage: 0V-1000.0V
- DC/AC Current: 0A-10.000A
- Resistance: 0Ω-250.00MΩ
- Capacitance: 0nF-99.99mF
- Frequency: 0Hz-999.9kHz
- Signal Generator Waveforms: Sine, Square, Triangular, Full Wave, Half Wave, Sawtooth
- Material: Double injection molded ABS and TPE
- Battery: 3.7V Lithium Battery
- Dimensions: Approximately 7.87 x 5.91 x 3.94 inches
- Weight: Approximately 1 Kilogram (2.2 Pounds)
- Certifications: CE, RoHS
Image 9.1: Detailed specification comparison for different AOS models, with AOS03 specifications highlighted.
10. Warranty and Support
The TOOLTOP AOS03 device comes with a manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact your point of purchase or visit the official TOOLTOP website.
EU Spare Part Availability Duration: 1 Year
