GVDA GD106B Digital Multimeter

1. Introduction

The GVDA GD106B is a stable performance, high precision, and high reliability digital multimeter designed for measuring AC/DC voltage, AC/DC current, resistance, capacitance, diode, continuity, and battery tests. It features a 4000 counts display with HD backlight, auto/manual ranging, and overload protection, making it suitable for electronic beginners, circuit installation, electronic maintenance, electromechanical maintenance, vehicle inspection, and household appliance maintenance.

2. Safety Information

Please read and understand all safety information before operating this multimeter. Failure to follow these instructions could result in electric shock, fire, or damage to the meter.

• Always ensure the meter is in the correct function and range before making measurements.
• Do not apply voltage or current that exceeds the maximum specified limits for the meter.
• Use caution when working with voltages above 30V AC RMS, 42V peak, or 60V DC, as these pose a shock hazard.
• Always disconnect power to the circuit and discharge all high-voltage capacitors before performing resistance, continuity, diode, or capacitance measurements.
• Replace the battery immediately when the low battery indicator appears to ensure accurate readings.
• Do not operate the meter if it appears damaged or if the protective casing is removed.
• Use only the specified replacement parts and accessories.
• The meter is rated CAT.III 600V; Pollution level 2, Altitude < 2000m.

3. Product Overview

3.1. Components

• NCV probe: For Non-Contact AC Voltage detection.
• Flashlight: Illuminates the measurement area.
• Red / green light: Indicator for various functions, including Live wire detection.
• LCD display: Digital display for measurement readings.
• Data hold button: Freezes the current reading on the display.
• Function keys: Buttons for selecting specific modes or features.
• Maximum value button: Displays the maximum measured value.
• Function knob: Rotary switch to select measurement functions (e.g., V, A, Ω, Cap).
• COM Input socket: Common terminal for test leads (black lead).
• 10A current Input socket: Input for high current measurements (red lead).
• Other measurement input socket: Input for voltage, resistance, capacitance, and lower current measurements (red lead).

3.2. Display Features

• HD Backlight LCD Display: Provides clear visibility in various lighting conditions.
• 4000 Counts Display: Offers precise readings up to 4000 units.
• Over Range Indication: Displays "OL" when the measured value exceeds the selected range.
• Low Battery Indication: An icon will appear to indicate when the batteries need replacement.

4. Setup

4.1. Battery Installation

The GVDA GD106B Multimeter requires two 1.5V AAA batteries (not included) for operation.

1. Ensure the multimeter is turned OFF.
2. Locate the battery compartment cover on the back of the device.
3. Use a screwdriver to open the battery compartment.
4. Insert two 1.5V AAA batteries, observing the correct polarity (+ and -).
5. Replace the battery compartment cover and secure it with the screw.

4.2. Test Lead Connection

Connect the test leads to the appropriate input jacks for your desired measurement:

• Always connect the black test lead to the "COM" (Common) jack.
• For voltage, resistance, capacitance, diode, and continuity measurements, connect the red test lead to the "VΩmA" jack.
• For current measurements up to 400mA, connect the red test lead to the "VΩmA" jack.
• For high current measurements (up to 10A), connect the red test lead to the "10A" jack.

5. Operating Instructions

The GD106B offers both auto-ranging and manual ranging capabilities. The sampling rate is approximately 3 times per second.

5.1. Function Selection

Turn the central rotary knob to select the desired measurement function. Use the "FUNC." button to cycle through sub-functions if available (e.g., AC/DC voltage, diode/continuity).

5.2. Voltage Measurement (AC/DC)

1. Set the rotary knob to the 'V' position (for DC Voltage) or 'V~' position (for AC Voltage).
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test probes across the component or circuit to be measured.

5.3. Current Measurement (AC/DC)

1. Set the rotary knob to the 'A' position (for DC Current) or 'A~' position (for AC Current).
2. Connect the black test lead to the COM jack. For currents up to 400mA, connect the red test lead to the VΩmA jack. For currents up to 10A, connect the red test lead to the 10A jack.
3. Open the circuit and connect the meter in series with the load.

5.4. Resistance Measurement

1. Set the rotary knob to the 'Ω' position.
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test probes across the component to be measured. Ensure the circuit is de-energized.

5.5. Capacitance Measurement

1. Set the rotary knob to the 'Cap' position.
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test probes across the capacitor. Ensure the capacitor is discharged before measurement.

5.6. Diode Test

1. Set the rotary knob to the diode symbol.
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test probes across the diode. A good diode will show a voltage drop in one direction and 'OL' in the reverse.

5.7. Continuity Test

1. Set the rotary knob to the continuity symbol.
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test probes across the circuit or component. The meter will beep if continuity is detected (low resistance).

5.8. Non-Contact AC Voltage (NCV) Detection

1. Set the rotary knob to the 'NCV' position.
2. Hold the NCV probe near the AC voltage source. The meter will indicate the presence of AC voltage with an audible beep and/or visual indicator.

5.9. Live Wire Detecting

1. Set the rotary knob to the 'Live' position.
2. Insert the red test probe into the socket or touch the wire. The meter will indicate a live wire with a visual and/or audible alert.

5.10. Battery Measurement

1. Set the rotary knob to the battery test symbol (e.g., 1.5V, 9V).
2. Connect the test probes to the battery terminals, observing polarity.

5.11. Data Hold

Press the "HOLD" button to freeze the current reading on the display. Press it again to release.

5.12. Flashlight

Press the flashlight button to turn on the built-in flashlight. Press again to turn off.

5.13. Auto Power Off

The multimeter will automatically power off after a period of inactivity to conserve battery life. This feature can typically be disabled or adjusted, refer to the full manual for details.

6. Maintenance

6.1. Cleaning

Wipe the meter with a dry, soft cloth. Do not use abrasives or solvents. Keep the meter dry.

6.2. Battery Replacement

When the low battery indicator appears on the display, replace the batteries as described in the "Battery Installation" section (4.1). Always remove batteries if the meter is not used for an extended period.

6.3. Storage

Store the multimeter in a cool, dry place with temperatures between -10°C and 60°C and relative humidity less than 70%. Remove the batteries before long-term storage.

7. Troubleshooting

• No display or faint display: Check battery installation and replace batteries if necessary.
• "OL" indication: The measured value exceeds the selected range. Switch to a higher range or ensure the measurement is within the meter's capabilities.
• Inaccurate readings: Ensure test leads are properly connected, batteries are not low, and the correct function/range is selected. Avoid strong electromagnetic interference.
• No continuity beep: Check if the circuit is open or if the resistance is too high for the continuity threshold.

8. Specifications

9. User Tips

• Always start with the highest range: When measuring an unknown value, especially voltage or current, start with the highest range setting and work your way down to avoid overloading the meter.
• Check test leads: Before each use, visually inspect test leads for any damage or frayed insulation. Test them for continuity to ensure they are working correctly.
• Understand True RMS: This multimeter features True RMS, which provides accurate readings for non-sinusoidal AC waveforms, unlike average-responding meters.
• Use the kickstand: The integrated kickstand (as shown in image) allows for hands-free operation, improving safety and convenience.

10. Warranty and Support

This GVDA GD106B Digital Multimeter comes with a 24-month manufacturer's limited warranty for defective items (excluding items damaged and/or misused after receipt). Accessories typically come with a 3-month warranty.

For warranty claims or technical support, please contact your retailer or the GVDA Global Store directly. You will need to provide your order number and a description of the issue.