GOLDEN BLUE AOS03 3-in-1 Oscilloscope Multimeter Signal Generator User Manual

1. Introduction

The GOLDEN BLUE AOS03 is a versatile 3-in-1 handheld device integrating an oscilloscope, a multimeter, and a signal generator. Designed for professionals, hobbyists, and educational environments, it features a 3.5-inch IPS display, 50MHz bandwidth, and a 280MSa/s real-time sampling rate. This manual provides essential information for the safe and effective operation of your device.

2. Safety Information

Always observe the following safety precautions to prevent personal injury and damage to the instrument:

• Do not exceed the maximum input ratings for any function.
• Ensure the device is properly connected before taking measurements.
• Inspect test leads for damage before use.
• Do not operate the device in wet conditions or explosive atmospheres.
• Refer to the manual for fuse replacement instructions.

3. Package Contents

Verify that all items listed below are present in your package:

Image: The GOLDEN BLUE AOS03 device shown with all included accessories.

• GOLDEN BLUE AOS03 Main Unit
• Oscilloscope Probes (2)
• Multimeter Test Leads (Red and Black)
• USB Type-C Charging Cable
• USB Data Cable
• Alligator Clips
• User Manual
• Storage Case

4. Product Overview

4.1 Key Features

• 3-in-1 Functionality: Oscilloscope, Multimeter, and Signal Generator.
• Display: 3.5-inch IPS color display.
• Oscilloscope: 50MHz bandwidth, 280MSa/s real-time sampling rate, 128KB record depth.
• Multimeter: 25,000 counts, True RMS, comprehensive measurement functions.
• Signal Generator: Outputs Sine, Square, Sawtooth, Half-wave, Full-wave.
• Power: Built-in 3.7V 18650 lithium battery (3400mAh).
• Connectivity: USB Type-C for charging and data transfer.

4.2 Device Layout and Controls

Image: Front and side view of the AOS03 with numbered components.

1. Dual Channel Input
2. 3.5-inch VA Reverse Color Screen
3. USB Charging Port / Data Cable Connection
4. Square Wave Input / Ground Terminal
5. Function Menu Selection Buttons (F1-F4)
6. Power On/Off (Long press) / Multimeter Relative Value (Short press)
7. Automatic Waveform Measurement / Manual Range Switching
8. Hold Data (Short press) / Save Measurement Data (Long press)
9. Switching Oscilloscope / Multimeter Mode
10. Set Value Adjustment (Up/Down)
11. Set Value Left / Previous Page
12. Set Value Right / Next Page
13. Set Value Down
14. 10A Current Jack
15. mA Current Jack
16. Black Test Lead Negative Jack (COM)
17. Red Test Lead Positive Jack (VΩHz+)

Image: Physical dimensions of the AOS03 device.

5. Setup

5.1 Charging the Device

The AOS03 is powered by a built-in 3.7V 18650 lithium battery. Before initial use, fully charge the device using the provided USB Type-C cable.

Image: The AOS03 device being charged via its USB Type-C port.

• Connect the USB Type-C cable to the device's charging port (3).
• Connect the other end of the cable to a standard USB power adapter or computer USB port.
• The battery indicator on the display will show charging status.

5.2 Power On/Off

To power on the device, long-press the Power On/Off button (6). To power off, long-press the same button. The device also supports an auto-power-off feature, which can be configured in the settings.

6. Operating Modes

The AOS03 offers three primary operating modes: Oscilloscope, Multimeter, and Signal Generator. Switch between modes using the dedicated MODE button (9).

6.1 Oscilloscope Mode

In Oscilloscope mode, the device displays real-time waveforms, allowing for detailed analysis of electrical signals.

Image: The AOS03 device highlighting its dual-channel input capability.

• Channels: Dual channel input (CH1, CH2).
• Bandwidth: 50MHz.
• Sampling Rate: 280MSa/s (High-speed mode), 200MSa/s (Normal mode).
• Vertical Sensitivity: 20mV/div to 10V/div.
• Trigger Modes: Auto, Normal, Single.
• Measurements: Auto measurement of Period, Frequency, Peak, Maximum, Minimum, RMS, Duty Cycle, Number of Pulses.
• Display Modes: YT, XY, Roll.

6.2 Multimeter Mode

The Multimeter function provides precise measurements of various electrical parameters.

Image: Examples of the AOS03 performing AC voltage, DC voltage, diode, resistance, AC current, DC current, capacitance, and buzzer tests.

• DC Voltage: 0V-1000.0V
• AC Voltage: 0V-750.0V
• DC Current: 0A-10.000A (mA range: 25.000mA-250.00mA)
• AC Current: 0A-10.000A (mA range: 25.000mA-250.00mA)
• Resistance: 0-250.0MΩ
• Capacitance: 0nF-99.99mF
• Frequency: 0Hz-999.9kHz
• Diode Test: Yes
• Continuity (Buzzer): Yes
• True RMS: Supported for AC measurements.

6.3 Signal Generator Mode

The built-in signal generator can output various waveforms for testing and calibration purposes.

• Output Waveforms: Sine wave, Square wave, Sawtooth wave, Half wave, Full wave.

7. Data Management

7.1 Waveform Storage

The oscilloscope automatically stores current measurement waveform data as images in its internal memory. These images are organized by run number.

7.2 Connecting to a Computer

You can connect the AOS03 to a computer to view and download stored waveform images.

Image: The AOS03 device connected to a laptop, displaying its internal storage as a USB drive.

• Enter the menu on the third page and press F3 to activate data save mode.
• Connect the device to your computer using the provided USB Type-C cable.
• The device will appear as a USB flash drive on your computer.
• Open the 'Pic' folder to access and download your waveform images for analysis and backup.

8. Maintenance

8.1 Battery Life and Care

The AOS03 is equipped with a 3400mAh 3.7V 18650 lithium battery, designed for extended operation.

Image: Internal view of the AOS03 highlighting the lithium battery and double fuse protection.

• Charge the battery regularly to maintain its lifespan.
• Avoid fully discharging the battery frequently.
• Store the device in a cool, dry place when not in use for extended periods.

8.2 General Care

The device features a double injection molded ABS and TPE reinforced structure for durability.

• Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Protect the screen from scratches.
• Ensure all ports are free of dust and debris.

9. Troubleshooting

If you encounter issues with your AOS03, consider the following common troubleshooting steps:

• Device not powering on: Ensure the battery is charged. Try connecting to a power source.
• Incorrect readings: Check test lead connections, ensure correct mode selection, and verify input ranges.
• Display issues: Restart the device. If the problem persists, contact support.
• Cannot connect to PC: Ensure the correct USB cable is used and the device is in data transfer mode.

10. Specifications

General

• Material: ABS + TPE
• Display: 3.5-inch IPS
• Battery: 1 * 3.7V 18650 battery (3400mAh)
• USB Charge: Yes
• Data Storage/Viewing: USB connect to computer
• Language Optional: Chinese/English

Oscilloscope Information

• Bandwidth: 50MHz, Dual channel
• Sampling Method: Real-time sampling
• Sampling Rate: 200M/280MSa/s
• Channel: 2, Dual channel
• Input Coupling: DC, AC
• Input Impedance: 1MΩ, @16pf
• Attenuation: X1, X10
• Maximum Input Voltage: X1 range < 150V, X10 range < 300V (DC+AC peak)
• Rate Range: 1.5Sa/s-280MSa/s
• Interpolation: (sinx)x
• Sweep Range: 10ns/div-20s/div
• Time Base: 20ppm
• Record Length: Up to 128Kbyte
• Sensitivity: 20mV/div-10V/div
• Offset Range: 4 grids (positive and negative)
• Analog Bandwidth: 50MHz
• Low-Frequency: More than 10Hz
• Rise Time: Less than 10ns
• DC Gain Accuracy: 3%
• Auto Measurement: Period / Frequency / Peak / Maximum / Minimum / RMS / Duty Cycle / Number of Pulses
• Trigger Modes: Auto, normal, single
• Trigger Edges: Rising edge, falling edge
• Operating Mode: Normal mode 200MSa/s, High-speed mode 280MSa/s
• Display Mode: YT / XY / Roll
• Afterglow Mode: Minimum, 500ms, 1S, 10S, Infinite

Signal Generator Output

• Waveforms: Sine wave / square wave / sawtooth wave / half wave / full wave

Multimeter Information

• AC Voltage (V): 0V-750.0V, 0.0001V-0.1V, (0.5%+3)
• DC Voltage (V): 0V-1000.0V, 0.0001V-0.1V, (0.05%+3)
• AC/DC Voltage (mV): 25.000mV-250.00mV, 0.001mV-0.01mV, (0.05%+3)
• AC/DC Current (A): 0A-10.000A, 0.0001A-0.001A, (0.5%+3)
• AC Current (A/mA): 25.000mA-250.00mA, 0.001mA-0.01mA, (0.8%+3)
• DC Current (mA): 25.000mA-250.00mA, 0.001mA-0.01mA, (0.5%+3)
• Resistance: 0-250.0MΩ, 0.01-0.1MΩ, (5.0%+5)
• Capacitance: 0nF-99.99mF, 0.001nF-0.01mF, (5.0%+20)
• Hz (100kHz bits in AC voltage gear): 0Hz-999.9kHz, 0.01Hz-0.1kHz, (0.1%+2)
• Diode/Buzzer: Yes
• Data Retention: Yes
• Low Battery Indication: Yes
• Support Frame: Yes
• True RMS: Yes
• Sampling Rate: 3 times/second

11. Warranty and Support

For warranty information and technical support, please refer to the documentation included with your purchase or contact GOLDEN BLUE customer service directly. Keep your purchase receipt as proof of purchase.