ANENG 683 Digital Multimeter User Manual

Introduction

This document is the user manual for the ANENG 683 Digital Multimeter. It provides detailed information on its features, operation, safety precautions, and maintenance. The ANENG 683 is a stable and reliable digital multimeter featuring an LCD display with an analog bar graph indicator. It automatically identifies and measures input signals for voltage and resistance, offering continuous operation without manual dial selection. It supports measurements for AC/DC voltage, AC/DC current, resistance, capacitance, live wire detection, duty cycle, diode testing, data hold, and automatic power-off. Equipped with a high-performance MCU and high-capacity rechargeable battery, it is an ideal tool for laboratories, factories, radio amateurs, and home use.

1. Safety Information

1.1 Before Use

• Ensure functions and measurement ranges are set correctly.
• Do not exceed the protective measurement range.
• Avoid touching the metal parts of the test probes when connected to a circuit.
• When measuring, keep fingers behind the probe shields, especially for voltages above 60V DC or 30V AC (RMS).
• Do not measure voltage if the potential between the measurement terminal and ground exceeds 1000V DC or 750V AC.
• Before changing measurement functions, disconnect the test probes from the circuit.
• Do not measure resistors, capacitors, diodes, or continuity when they are charged.
• Exercise caution when replacing batteries during measurement of current, resistance, capacitance, diode, or continuity.
• Ensure capacitors are fully discharged before measuring capacitance.
• Do not use the instrument near explosive gases, vapors, or dust.
• If any function is faulty, discontinue use.
• Ensure the battery compartment cover is securely fastened before use.
• Avoid storing or using the multimeter in direct sunlight, high temperatures, or high humidity.

1.2 General Safety Precautions

• Incorrect operation may lead to electric shock or instrument damage.
• Follow general safety rules and this user manual.
• For full functionality and safety, read the instructions carefully.
• When using the multimeter, follow standard safety rules.
• Ensure general shock protection.
• Avoid incorrect use of the multimeter.
• Upon receiving the multimeter, check for shipping damage.
• Store in its original packaging and check for damage before shipping.
• Inspect probe insulation for exposed wires. Use original probes for safety.

2. Description

2.1 Components

• NCV Zone [Non-Contact Voltage detection area]
• Power Button
• LCD Display
• Input Jack
• Flashlight and Functional Indicator

2.2 Button Description

• Power Button: Press and hold for over 3 seconds to turn on/off.
• Select Button: Manually select functions.
• Hold/Reset Button: Press once to save data, press again to clear saved data. Press and hold for over 3 seconds to activate the flashlight. Press again to turn off the flashlight.

3. Technical Specifications

Accuracy is guaranteed for one year at 18°C to 28°C with relative humidity below 75%. Recalibration is required thereafter.

3.1 General Features

• Manual and auto ranging.
• Full overload protection.
• Maximum voltage between terminal and earth: 1000V DC or 750V AC.
• Fuse protection: μA, mA fuse: FF630mA / 250V; A fuse: FF20A / 250V.
• Operating altitude: Max 2000m.
• Display: LCD with analog bar graph.
• Maximum display value: 5999 digits.
• Polarity indication: Automatic, indicates negative polarity.
• Over-range indication: "OL" or "OL".
• Sampling time: Approx. 3 times per second.
• Auto power-off time: Approx. 15 minutes without signal.
• Battery type: 3.7V / 2800mAh rechargeable battery.
• Temperature coefficient: Less than 0.1 x accuracy / °C.
• Operating temperature: 18°C ~ 28°C.
• Storage temperature: -10°C ~ 50°C.
• Dimensions: 150(L) × 75(W) × 24(H) mm.
• Weight: Approx. 200g (including battery).

4. Measurement Ranges

4.1 DC Voltage

• Input impedance: 10 MΩ.
• Maximum input voltage: 1000V DC or 750V AC (RMS).

4.2 AC Voltage

• Input impedance: 10 MΩ.
• Maximum input voltage: 750V AC (RMS) or 1000V DC.
• Frequency range: 50 ~ 1000 Hz True RMS.

4.3 AC/DC Current

• Maximum input voltage: 750V AC (RMS) or 1000V DC.
• Frequency range: 50 ~ 1000 Hz True RMS.

4.4 Resistance

• Overload protection: 250V DC or AC (RMS).

4.5 Capacitance

• Overload protection: 250V DC or AC (RMS).

4.6 Diode Test

4.7 Continuity Test

• Open circuit voltage: Approx. 1.0V.
• If the resistance of the circuit under test is less than 50 Ω, a buzzer will sound. If less than 10 Ω, a continuous audible signal will sound.
• Overload protection: 250V DC or AC (RMS).

4.8 Temperature Measurement

• Overload protection: 250V DC or AC (RMS).

4.9 Frequency Measurement

• Maximum frequency: 1 MHz.
• Sensitivity: 2.0V RMS.

5. Operating Instructions

5.1 Data Hold

During measurement, press the HOLD button to display the current reading. Press again to release the hold function.

5.2 Flashlight

Press and hold the flashlight icon (or the power button for over 3 seconds) to turn on the flashlight. Press again to turn it off.

5.3 Auto Power Off

The multimeter will automatically enter standby mode after 15 minutes of inactivity to save power. A beep will sound 5 times one minute before shutdown, followed by automatic power-off. (Note: Standby current is 3-6 μA. For longer periods, switch off or disconnect the battery). Pressing the power button resumes operation. If the "SEL" button is pressed during power-on, the auto power-off function is disabled.

5.4 Buzzer

An audible beep (approx. 0.25 seconds) sounds when a function key or switch is activated. The buzzer will also sound continuously if measured voltage or current exceeds preset alarm values (e.g., AC voltage > 750V, DC voltage > 1000V). The buzzer emits 5 beeps per minute for 1 minute before auto-power-off. If auto-power-off is disabled, five consecutive beeps will sound every 5 minutes.

5.5 Preparation for Measurement

Ensure the device is charged. Press and hold the power button for over 3 seconds. "OL" indicates that the input voltage or current exceeds the specified value and may damage the internal circuit. Set the switch to the desired measurement function and range.

5.6 AC/DC Voltage, Resistance, Continuity Test

Warning! Risk of electric shock. Exercise extreme caution when measuring high voltages. Do not input voltages exceeding 1000V DC or 750V AC (RMS). Do not apply voltages over 1000V DC or 750V AC between the common terminal and ground. Press the power button for over three seconds to enter automatic mode. Connect the black test probe to COM and the red probe to the appropriate input jack.

5.7 AC/DC Current Measurement

Follow safety precautions. Do not exceed the specified voltage limits. Ensure correct probe connection for current measurements.

5.8 Diode Test

Warning! Risk of electric shock. To prevent damage to the instrument or device under test, disconnect power and discharge high-voltage capacitors before measuring resistance. Connect the red and black test probes to the COM and VΩmA jacks respectively. Connect the other ends of the probes to the diode's anode and cathode. The meter displays the forward voltage drop. Reversing polarity will show "OL". A normal diode typically shows a forward voltage drop of 0.5V to 0.8V.

5.9 Capacitance Measurement

Warning! Risk of electric shock. Disconnect power and discharge all high-voltage capacitors before measuring capacitance. Use DC voltage to check if a capacitor is discharged. Insert test probes into the input jacks. Press the "SEL" button to select capacitance mode. Discharge the capacitor by shorting its terminals, then proceed with measurement. For capacitances below 10 nF, reduce parasitic capacitance from the meter and leads. Large capacitance measurements may take time for stable readings. External interference (e.g., from flashlights or motors) can cause errors. Observe polarity when measuring polarized capacitors.

5.10 Temperature Measurement

Press and hold the power button for 3 seconds, then press "SEL" to set temperature units (°C or °F). Connect the black (negative) and red (positive) test probes to the COM and VΩmA jacks respectively for a K-type thermocouple. Place the test end of the thermocouple near the object to be measured.

5.11 Frequency Test

Insert test probes into the input jacks and press "SEL" to select frequency mode. Connect the probes to the signal source or load. The measured frequency will be displayed.

5.12 Live Wire and NCV Test

Press and hold the power button for 3 seconds, then press "SEL" to enter test mode. The non-contact voltage detection zone should be brought close to the AC voltage line (within 5 mm). If a weak signal is detected, "--L" will appear on the display, and a red indicator light will illuminate. As the signal strengthens, "--H" will be displayed, and the red indicator will light up. The closer to the AC line, the higher the frequency of the buzzer. Press "SEL" to switch to Live mode. Touch the phase wire with the red test probe (black probe to COM). If voltage is present, "H" will appear on the display, the red indicator will light up, and the buzzer will sound. The detection can persist even without the indicator. Do not rely solely on the probe's detection for voltage presence.

6. Maintenance

6.1 Battery Replacement

The multimeter is powered by a rechargeable battery that does not require replacement but needs timely charging to avoid deep discharge, which can hinder recharging. If the battery symbol appears on the display, charge the battery immediately to prevent inaccurate readings, electric shock, or injury.

6.2 Probe Replacement

Replace probes only with probes of the same class.

7. Package Contents

• Test Probes: 1 pair (1000V 10A)
• User Manual: 1 pc
• Temperature Probe: 1 pair

Note: The contents of this manual may be changed without notice. The information in this manual is considered correct. Please contact the manufacturer if you find any errors or omissions. The company is not responsible for accidents or hazards caused by incorrect user actions. The functions described in this manual do not justify the use of the product for special purposes.

Warranty Information: The warranty period is 1 year from the date of sale. For products without a date of sale, warranty is not provided. Exchange of faulty products is carried out through the retail network upon presentation of the receipt and warranty card. Products with mechanical damage are not covered by warranty.

Official Representative in Russia: OOO ELSY S-Line.ru