ANENG 620A Smart Digital Multimeter User Manual

1. Introduction

The ANENG 620A is a full-screen intelligent digital multimeter designed for precise measurement of various electrical parameters. It is suitable for hobbyists, students, and engineers, offering functions such as AC/DC voltage, AC/DC current, resistance, capacitance, frequency, temperature, diode testing, and continuity buzzing.

Figure 1: ANENG 620A Smart Digital Multimeter and accessories.

2. Safety Information

Please read and understand all safety warnings and operating instructions before using this instrument. Failure to do so may result in injury or damage to the meter or equipment under test.

• Always disconnect power to the circuit before making resistance, capacitance, or diode measurements.
• Do not apply more than the rated voltage between the terminals or between any terminal and ground.
• Use caution when working with voltages above 30V AC RMS, 42V peak, or 60V DC. These voltages pose a shock hazard.
• Ensure the test leads are properly connected and the correct function is selected before making measurements.
• Do not use the meter if it appears damaged or if the insulation on the test leads is compromised.
• The meter features a built-in double fuse to prevent short circuits and burning. However, always operate within specified limits.

3. Setup

3.1 Battery Installation

The ANENG 620A requires 2 AAA batteries for operation. To install or replace batteries:

1. Locate the battery compartment on the back of the multimeter.
2. Open the battery cover.
3. Insert 2 AAA batteries, observing the correct polarity (+/-).
4. Close the battery cover securely.

3.2 Connecting Test Leads

Connect the red test lead to the "VHz-Ω" or "mA" or "10A" input jack depending on the measurement type, and the black test lead to the "COM" (common) input jack.

Figure 2: Details of the multimeter, including battery compartment and test lead input ports.

4. Operating Instructions

The ANENG 620A features an intelligent full-screen display and automatic recognition for many functions. Turn the rotary switch to the desired measurement mode.

4.1 AC/DC Voltage Measurement

To measure voltage, connect the test leads in parallel to the circuit or component. The meter will automatically detect AC or DC voltage.

Figure 3: Various measurement functions including AC/DC Voltage, Resistance, Capacitance, Diode, and Buzzer.

4.2 AC/DC Current Measurement

To measure current, connect the multimeter in series with the circuit. Ensure the red test lead is plugged into the appropriate current input jack (mA or 10A).

Figure 4: Various measurement functions including DC Current, Temperature, AC Current, and NCV Voltage Sensing.

4.3 Resistance Measurement

To measure resistance, ensure the circuit is de-energized. Connect the test leads across the component. The meter will automatically recognize the resistor.

4.4 Capacitance Measurement

To measure capacitance, ensure the capacitor is discharged before connecting the test leads. For safety reasons, the capacitor needs to be measured using the provided test leads.

4.5 Frequency Measurement

The meter can measure frequency simultaneously with AC voltage measurements, displaying both values on the screen.

4.6 Temperature Measurement

Connect the temperature probe to the multimeter and place the probe on the object to be measured. The temperature will be displayed on the screen.

4.7 Diode Test

Switch to diode gear and touch the positive and negative electrodes of the Light Emitting Diode (LED) with the test leads to check its functionality.

4.8 Continuity (Buzzer) Test

The continuity test checks for an unbroken electrical path. If the circuit is unobstructed, the buzzer alarm will sound.

4.9 NCV (Non-Contact Voltage) Detection

The NCV function allows for non-contact detection of AC voltage. When AC voltage is detected, a buzzer alarm will sound, and the signal strength will increase as the meter gets closer to the source.

Figure 5: NCV (Non-Contact Voltage) detection in action.

4.10 Live Wire Recognition (Zero FireWire Recognition)

In Live mode, use one test lead to identify live wires. The screen will turn red and a beep sound will indicate a live wire. A neutral line will show no response.

Figure 6: Live Wire Recognition feature.

4.11 Backlight and Flashlight

The ANENG 620A is equipped with a backlight for the display and two upgraded dual light bulbs on the back, serving as a flashlight. This improves visibility in dimly lit working environments and helps avoid the risk of electric shock by illuminating the measurement position.

Figure 7: Backlight and Flashlight feature.

5. Maintenance

5.1 Cleaning

Wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. Keep the terminals free of dirt and moisture.

5.2 Fuse Replacement

The multimeter has built-in double fuses to protect against short circuits and burning. If the meter stops functioning correctly, especially in current measurement modes, the fuse may need replacement. Refer to the specifications for the correct fuse type and rating. Fuse replacement should only be performed by qualified personnel.

5.3 Storage

When not in use for extended periods, remove the batteries to prevent leakage and store the multimeter in a cool, dry place away from direct sunlight and extreme temperatures.

6. Troubleshooting

7. Specifications

• Brand: ANENG
• Model: 620A Black
• Product Weight: 0.6 g
• Product Dimensions (LxWxH): 50 x 50 x 200 mm
• Measurement Accuracy: / (Not specified in detail)
• Included Accessories: 1 Multimeter, 1 Temperature Line, 2 Test Leads, 1 Manual, 1 Packaging Box
• Power Source: 2 x AAA Batteries (not included)
• Display: Full Screen Digital Display, 6000 Counts
• Safety Features: Built-in Double Fuse, NCV, Live Wire Recognition

8. Warranty and Support

Specific warranty details are not provided in this manual. For warranty claims, technical support, or service inquiries, please contact the seller directly.

Seller: ANENG Stores