ANENG LM08 Handheld LCR Meter Instruction Manual

1. Overview

The ANENG LM08 is a high-precision handheld LCR digital bridge measuring instrument designed for professional measurement of various resistances, capacitances, inductances, and their characteristic parameters. It also includes a built-in battery internal resistance measurement function.

The device features an elegant design, compact size, and flexible operation, with a 2.8-inch TFT high-definition display. It utilizes four-wire measurement input, significantly improving measurement accuracy and reliability. With its superior performance and powerful functions, this instrument meets a wide range of LCR and battery measurement needs, making it an ideal choice for on-site operations, laboratories, and factories.

2. Safety Precautions

• Before using the product, carefully inspect the casing for any cracks or plastic damage. Pay special attention to the insulation near the input ports.
• Always follow the instructions in this manual to select the correct input ports and settings, ensuring all measurements are performed within the specified range.
• Do not use this product in environments with explosive gases or vapors, or in excessively humid conditions.
• Before measuring batteries, ensure the battery voltage does not exceed the meter's measurement range. Voltages above 36V may cause serious injury; always exercise caution to avoid electric shock.
• When measuring batteries, observe correct polarity and avoid short circuits to prevent sparking or potential damage to the device or battery.
• Never operate the product with the front or back cover open.
• If the battery voltage is low, it may affect the accuracy of test results. Please recharge the device promptly.
• Before any LCR measurement, ensure the circuit is not live and fully discharge any capacitors before starting the measurement.
• Use separate input ports for LCR measurements and battery internal resistance measurements. Mixing them may damage the instrument.

3. Setup

3.1 Package Contents

Verify that all items are present in your package:

• ANENG LM08 Handheld LCR Meter
• Test Leads
• Kelvin Clips
• USB Type-C Charging Cable
• User Manual
• Carrying Case
• Insulating Separator (for Kelvin clips)

Figure 3.1: ANENG LM08 LCR Bridge Tester and included accessories.

3.2 Battery Charging

The ANENG LM08 is equipped with an 18650 2000mAh lithium battery. To charge the device:

1. Connect the provided USB Type-C data cable to the charging port on the side of the meter.
2. Connect the other end of the USB cable to a DC 5V output adapter (not included).
3. During charging, the power indicator light will be bright red. Once fully charged, the indicator will glow green.

Figure 3.2: Type-C Charging port and battery status indicators.

3.3 Initial Power On and Language Setting

Press the power button (labeled '6' in Figure 4.1) to turn the instrument on or off. Upon first use, you may need to set the language:

1. Press the 'Setting key' (labeled '7' in Figure 4.1) to enter the system settings interface.
2. Navigate using the direction keys (labeled '9') to find the 'Language' option.
3. Select 'Chinese' or 'English' as desired.

Figure 3.3: Language selection screen.

4. Operating Instructions

4.1 Controls and Ports Overview

Familiarize yourself with the main controls and input ports of the ANENG LM08:

Figure 4.1: ANENG LM08 Controls and Ports.

1. 2.8-inch TFT display screen: High-definition color screen for displaying measurement data.
2. Frequency key (FREQ): Press to select different measurement frequencies.
3. Level key (LEVEL): Press to select different measurement levels.
4. Measurement speed key (SPEED): Press to select different measurement speeds (Slow/Medium/Fast).
5. Sub-parameter selection key (X/D/Q/θ/ESR): Press to switch between different sub-parameter values.
6. Power button: Press to turn on or off the instrument's power.
7. Setting key (AUTO/S/P SETUP): Short press to switch to the measurement equivalent mode (Series/Parallel), long press to enter the system settings interface.
8. Main parameter selection key (LCRZ BATT): Press to switch between different functional measurements (LCR, Battery).
9. Direction keys (Up/Down/Left/Right): Use to move and select functions in the menu, and modify setting parameters.
10. Hold/Record key (HOLD REC): Short press to keep the measurement data, long press to enter the measurement record mode and switch to the host computer.
11. Relative/Tolerance key (REL TOL%): Short press to enter the tolerance measurement mode, long press to reset the base value of the main parameters to zero.
12. High-end input (HPOT): Positive input for Kelvin clips.
13. Low-end input (LPOT): Negative input for Kelvin clips.
14. Grounding terminal (GUARD): For grounding connections.
15. Charging port: USB Type-C port for charging.
16. High-end current sampling (Hcur): Connect the red wire of the Kelvin clamp.
17. High-end voltage sampling (Hpot): Connect the red wire of the Kelvin clamp.
18. Low-end voltage sampling (Lpot): Connect the black wire of the Kelvin clamp.
19. Low-end current sampling (Lcur): Connect the black wire of the Kelvin clamp.

4.2 Measurement Functions

4.2.1 Automatic Recognition (LCR)

The LM08 features automatic recognition for inductance, capacitance, and resistance. You can directly plug components into the designated sockets or use the test leads/Kelvin clips. The main and auxiliary parameters will be displayed simultaneously.

Figure 4.2: Automatic component recognition.

4.2.2 Kelvin Four-wire Measurement

For improved accuracy, especially with low-value components or when wire resistance might affect readings, use the Kelvin four-wire connection method. This involves using the Kelvin clips and an insulating separator.

1. Connect the red Kelvin clip to the Hcur and Hpot ports.
2. Connect the black Kelvin clip to the Lcur and Lpot ports.
3. Insert an insulating separator between the jaws of the Kelvin clips if needed to isolate the component.
4. Attach the Kelvin clips to the component to be measured.
5. You can adjust parameters such as frequency, level, and equivalent mode using the respective keys.

Figure 4.3: Kelvin Four-wire measurement setup.

4.2.3 Specific Measurement Types

The LM08 supports various measurement types:

• Inductance Test: Connect the inductor using test leads or Kelvin clips. The meter will automatically detect and display inductance (L) and quality factor (Q).
• Capacitance Test: Connect the capacitor. Ensure large capacitors are discharged before testing. The meter displays capacitance (C) and dissipation factor (D).
• Resistance Test: Connect the resistor. The meter displays resistance (R). For small resistors, use Kelvin clips for better accuracy.
• Battery Internal Resistance Test: Use the dedicated aviation plug input for battery internal resistance measurement. Connect the red and black clips to the positive and negative terminals of the battery, respectively. The meter measures voltage and internal resistance.
• Impedance Test: The meter can measure impedance (Z) and reactive power (X).
• Electrolytic Capacitor Test: Specialized measurement for electrolytic capacitors.

Figure 4.4: Multifunctional measurement capabilities.

4.2.4 Data Recording

In the internal resistance test mode, you can record measurement data:

1. Press and hold the HOLD REC key (labeled '10' in Figure 4.1) to enter the data recording mode.
2. The meter can simultaneously measure and display multiple sets of data, allowing for quick understanding of battery status over time.

Figure 4.5: Data Recording in internal resistance test mode.

4.3 Bridge Technology Indicators and Measurement Conditions

The following tables provide detailed bridge technology indicators and reference measurement conditions for various components.

Figure 4.6: Bridge Technology Indicators and Reference Table of Measurement Conditions.

Figure 4.7: Explanation of Bridge Symbols.

5. Maintenance

5.1 General Care

• Keep the instrument clean and dry. Wipe the casing with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Avoid exposing the device to extreme temperatures, direct sunlight, or high humidity.
• Store the meter in its carrying case when not in use to protect it from dust and physical damage.

5.2 Battery Maintenance

• Recharge the battery promptly when the low battery prompt appears to ensure accurate measurements and prolong battery life.
• If storing the device for an extended period, charge the battery to approximately 50% to prevent deep discharge.

6. Troubleshooting

• Inaccurate Readings:
  • Check if the battery voltage is low. Recharge if necessary.
  • Ensure the correct measurement frequency and level are selected for the component type.
  • For LCR measurements, ensure the circuit is not live and capacitors are fully discharged.
  • Verify that the test leads or Kelvin clips are securely connected and making good contact with the component.
  • For low resistance or inductance measurements, use the Kelvin four-wire method for improved accuracy.
• No Display/Device Not Turning On:
  • Ensure the battery is charged. Connect to a charger and check the charging indicator.
  • Press and hold the power button for a few seconds.
• Damage to Instrument:
  • Avoid mixing input ports for LCR measurements and battery internal resistance measurements. Use the dedicated ports for each function.
  • Do not exceed the specified voltage or current ranges for any measurement.

7. Specifications

The following table details the technical specifications of the ANENG LM08 Handheld LCR Meter:

Figure 7.1: ANENG LM08 LCR Meter Specifications.

8. User Tips

• Discharge Capacitors: Always ensure capacitors are fully discharged before testing to prevent damage to the meter and ensure accurate readings.
• Use Kelvin Clips for Precision: For highly accurate measurements, especially with low-value resistors or inductors, utilize the Kelvin four-wire clips to minimize the impact of test lead resistance.
• Monitor Battery Level: Keep an eye on the battery indicator. A low battery can lead to unstable or inaccurate measurements. Charge the device regularly.
• Explore Settings: Experiment with different measurement frequencies and speeds (Slow/Medium/Fast) in the settings to find the optimal configuration for various components and desired accuracy levels.

9. Warranty and Support

This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact the seller or manufacturer directly with your purchase details.

Please retain your proof of purchase for any warranty-related inquiries.