ANENG AOS03 3-in-1 Oscilloscope Multimeter User Manual

1. Introduction

The ANENG AOS03 is a versatile 3-in-1 handheld device that integrates the functions of an oscilloscope, a multimeter, and a signal generator. Designed with a dual injection molding process, it features a compact size, convenient portability, and flexible operation. The device is equipped with a 3.5-inch IPS full-view color display, providing clear readings in various lighting conditions. With its superior performance and powerful functionality, the AOS03 is suitable for a wide range of electrical measurement and testing scenarios.

2. Package Contents

Before using the device, please verify that all items are present in the package:

1. 3-in-1 Oscilloscope Multimeter (Main Unit)
2. User Manual (x2)
3. Storage Bag
4. Packaging Box
5. Extra Tip Pen
6. Oscilloscope Pen
7. Positioning Sleeve (x2)
8. Tag Ring (x8)
9. USB Data Cable
10. Probe Compensation Screwdriver
11. Alligator Clip Ground Lead

3. Device Layout and Controls

Familiarize yourself with the various parts and controls of your ANENG AOS03 device:

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. Corresponds to the function menu selection button at the top of the screen (F1-F4)
6. Long press the switch/multimeter function to place an order and press as the relative value
7. Automatic waveform measurement/manual range switching
8. Keep current data/Long press to save measurement data
9. Switching oscilloscope/multimeter
10. Set value adjustment (Up/Down)
11. Set the value to the left/previous page
12. Set the value to the right/next page
13. 10A current jack
14. mA current jack
15. Black watch pen negative jack (COM)
16. Red watch pen negative jack (VΩHz-f)
17. Back support frame
18. Anti-drop silicone layer

4. Setup and Initial Use

4.1 Charging the Device

The AOS03 is equipped with a built-in 3400mAh 3.7V 18650 lithium battery, which can be recharged using the provided Type-C data cable. Connect the Type-C cable to the USB charging port (3) on the device and to a suitable USB power source.

4.2 Power On/Off

Press the power button (6) to turn the device on or off. The device supports automatic shutdown after a period of inactivity to conserve battery life. This setting can be configured in the menu.

4.3 Language Selection

The device supports both Chinese and English languages. You can switch the language through the device settings menu.

5. Operating Instructions

5.1 Multimeter Function

The multimeter function allows for precise measurement of various electrical parameters. To switch to multimeter mode, press the dedicated oscilloscope/multimeter switch button (9).

• AC Voltage (V): Connect the test leads to the VΩHz-f and COM jacks. Select the AC voltage gear and measure across the circuit.
• DC Voltage (V): Connect the test leads to the VΩHz-f and COM jacks. Select the DC voltage gear and measure across the circuit, observing polarity.

• AC Current (A): Connect the test leads to the 10A or mA jack and COM. Select the appropriate AC current gear and measure in series with the circuit.
• DC Current (A): Connect the test leads to the 10A or mA jack and COM. Select the appropriate DC current gear and measure in series with the circuit.
• Diode Test: Enter the diode gear, touch the positive and negative electrodes of the diode with the test leads.
• Resistance (Ω): Enter the resistance gear, measure the resistance value on both sides of the component.

• Capacitance (F): Enter the capacitor gear and contact both ends of the capacitor. For safety reasons, it is necessary to short-circuit the capacitor before measurement.
• Buzzer (Continuity): Enter the buzzer gear, detect on and off, and issue a beep, indicating that the fuse line is unobstructed.

5.2 Oscilloscope Function

The oscilloscope function allows for real-time waveform visualization and analysis. To switch to oscilloscope mode, press the dedicated oscilloscope/multimeter switch button (9).

5.2.1 Dual Channel Waveform Detection

The AOS03 supports dual-channel input (CH1 and CH2), enabling simultaneous display and comparison of two waveforms. This feature enhances problem diagnosis and signal detection accuracy.

Set and connect to the dual-channel input port, select automatic or manual measurement, and press the SAVE button (8) for 2 seconds to save the waveform.

5.2.2 XY Display Mode

To enter XY display mode, navigate to the fifth page of the extended function menu. Press F1 to select X-Y. This mode displays the frequency relationship between CH1 and CH2, producing Lissajous figures of various shapes.

5.2.3 Computer View Waveform

The AOS03 allows you to view saved waveforms on a computer. Enter the menu on the third page, press F3 to enter the data saving mode. Connect the device to your computer using the USB data cable. The device will appear as a USB disk. Open the 'Pic' folder on the disk to view the saved waveform images.

5.3 Signal Generator Function

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

5.3.1 Waveform Output

To output a signal waveform, enter the menu on the sixth page. Press F1 to enter the extended application, select 'signal output', and press the MENU key to confirm and start generating the waveform.

5.3.2 Available Waveforms

The signal generator supports the output of 7 different waveforms:

• Sine wave
• Square wave
• Triangular wave
• Half wave
• Full wave
• Sawtooth wave

6. Maintenance

6.1 Battery Care

The device uses a 3400mAh 3.7V 18650 lithium battery. To prolong battery life:

• Charge the device regularly, especially when the low battery indicator is shown.
• Avoid fully discharging the battery frequently.
• Store the device in a cool, dry place if not used for extended periods.

6.2 Fuse Protection

The AOS03 features double fuse protection (10A 250V / 600mA 250V) for enhanced safety during current measurements. If the device stops functioning during current measurement, check the fuses. Fuse replacement should only be performed by qualified personnel.

6.3 Cleaning

Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the casing or screen.

7. Troubleshooting

7.1 Current Measurement Precaution

IMPORTANT: When measuring current, the multimeter must always be connected in series with the circuit. Incorrect connection (e.g., in parallel) can damage the device and the circuit.

When measuring electric current, pay close attention to the connection method. Do not mix current and voltage measurement modes. Use the multimeter's current file, choose an appropriate range. If the current value is unknown, start with a larger range. If the multimeter displays "1", it indicates an over-range condition. Insert the red pen into the mA hole, the black pen into the COM hole, then disconnect the circuit and connect the pens in series to measure.

7.2 General Malfunctions

If the product is not operating properly, please provide a detailed video of the issue to ANENG customer service. Their experts can quickly diagnose the problem and provide a solution. This brand product is technical and requires a certain degree of electrical knowledge. If you encounter operational problems or do not understand how to use the product, please contact ANENG customer service for assistance.

7.3 Product Has Been Artificially Damaged

This device is primarily used to detect electrical and other measurement products. It requires careful use and adherence to operating procedures to prevent damage. If the device is used improperly and the use method is not equal, resulting in damage, it will be judged as man-made damage, which is not within the scope of after-sales service. However, you can still contact ANENG customer service to receive a certain amount of coupons to deduct the newly purchased ANENG products.

8. Specifications

8.1 General Technical Specifications for Multimeter

8.2 Oscilloscope Technical Indicators

8.3 Environmental Specifications

9. User Tips

• Always ensure the device is fully charged before critical measurements to avoid interruptions.
• For precise oscilloscope readings, use the probe compensation screwdriver to calibrate your probes if necessary.
• When saving waveforms to a computer, ensure the USB connection is stable to prevent data corruption.
• Take advantage of the dual-channel feature for comparing signals, which can greatly assist in circuit analysis and troubleshooting.
• Regularly check the test leads for any signs of wear or damage to ensure accurate and safe operation.

10. Warranty and Support

ANENG is committed to providing excellent after-sales service. If you have any questions or issues regarding your AOS03 device, please refer to the following guidelines:

10.1 Contact for After-Sales Questions

If you have any questions during the use of the product, please contact ANENG customer service. Our customer service team will provide you with satisfactory solutions in a timely manner.

10.2 About Quality Issues

In case of quality problems other than "man-made damage" during the use of this product, replacement services or refunds can be provided. For specific product damage, please contact ANENG customer service to confirm and discuss solutions.

• Replacement method: a) Replacement of spare parts, b) Replacement of the whole machine.
• Refund method: a) Partial refund according to damaged parts, b) Full refund if the whole machine is damaged.

10.3 Replacement or Refund Request

To initiate a replacement or refund request:

1. Contact customer service and provide a product quality problem video for damage determination.
2. Negotiate a solution.
3. Destroy (smash) products with quality problems to avoid secondary damage.
4. Execute the solution.