GVDA GD107 Smart Pen-Type Multimeter User Manual

1. Introduction

This manual provides essential information for the safe and effective use of your GVDA GD107 Smart Pen-Type Multimeter. The GD107 is a true RMS digital multi-meter equipped with intelligent test functions, designed for measuring DC/AC voltage, resistance, capacitance, frequency, and performing continuity, diode, live wire detection, and phase sequence detection.

Please read this manual thoroughly before operation and keep it for future reference.

2. Safety Instructions

2.1. Safety Statement

The meter conforms to IEC61010-1 CAT III 600V overvoltage safety standard and pollution level 2.

2.2. Caution

• Operation that may cause damage to the meter.
• Do not measure voltage higher than 600V, otherwise the meter may be damaged.

2.3. Warning

• Operation that may cause danger to users.
• To avoid possible electric shock or personal injury, please observe the following specifications:
• Please read this manual carefully and pay special attention to safety warning information before using the meter.
• Operate the meter according to the manual, otherwise the protection function provided by the instrument may be damaged or weakened.
• Take special care when measuring values that exceed 60VDC, 30VAC RMS, or 42V. This kind of voltage has the danger of electric shock.
• Do not measure voltage higher than the rated value between terminals or between terminals and ground.
• Measure the known voltage to check whether the meter works normally. If it is not normal or damaged, please do not use it again.
• Before using the meter, please check whether there are cracks or damaged plastic parts in the instrument shell. If so, please do not use it again.
• Before using the meter, please check whether the probe is cracked or damaged. If so, please replace the probe with the same model and the same electrical specification.
• Please use the meter according to the measurement category, voltage or current rating specified in the meter or manual.
• Please observe local and national safety regulations. Wear personal protective equipment (such as approved rubber gloves, masks and flame retardant clothing etc.) to prevent injury caused by electric shock and electric arc when dangerous live conductors are exposed.
• When the "a" symbol is displayed on the meter, please replace the battery in time to prevent measurement error.
• Do not use the meter in the environment with explosive gas or steam or humid environment.
• When using the probe, please hold your fingers behind the probe finger guard.
• When measuring, please connect the null or ground wire first, then the live wire; when disconnected, please disconnect the live wire first, and then the null or ground wire.
• Remove the probe from the meter before opening the case or battery cover. Do not use the meter when the meter is disassembled or the battery cover is opened.
• The meter can only be used together with the probe provided to meet the requirements of the safety standard. If the probe is damaged and needs to be replaced, the probe of the same model and electrical specification must be replaced.

3. Product Overview

The GVDA GD107 is a compact, pen-type multimeter designed for ease of use and portability. It features a clear HD display and intuitive controls.

3.1. Components

• Input Terminal: For connecting the red test probe.
• Signal Intensity Indicator: Visual feedback for signal strength.
• Display LCD: Digital display for readings and indicators.
• Function Key (FUNC): Used to select measurement modes.
• Power Button: To turn the device on/off.
• Hold/Flashlight Button: To hold readings or activate the flashlight.
• Input COM Terminal: For connecting the black test probe.

4. Setup

4.1. Battery Installation

The GVDA GD107 requires 2 x 1.5V AAA batteries (not included). To install or replace batteries:

1. Turn off the meter power and remove the probes.
2. Remove the screw fixing the battery cover and remove the battery cover.
3. Remove the old battery (if any) and replace it with new 1.5V AAA batteries, paying attention to the correct polarity.
4. Install the battery cover back to its original position, and fix and lock the battery cover with screws.

4.2. Probe Connection

Connect the red test probe to the Input Terminal and the black test probe to the Input COM Terminal. Ensure connections are secure before use.

5. Operating Instructions

5.1. Power On/Off

Press and hold the Power key for about 2 seconds to turn the meter on or off.

5.2. Gear Selection (Function Mode)

Press the FUNC key to cycle through different measurement modes. Press and hold the FUNC key for about 2 seconds to return to the intelligent (AUTO) measurement mode. Power on defaults to intelligent measurement mode.

5.3. Data Hold

Press the Hold key to freeze the current reading on the display.

5.4. Flashlight

Press and hold the Hold key for about 2 seconds to turn the flashlight on or off.

5.5. Auto Power Off

After power on, auto power off is enabled by default, indicated by a symbol on the display. If there is no key operation for about 15 minutes, the meter will automatically shut down to save battery energy.

5.6. Smart (AUTO) Measurement

This is the default mode upon power-on. In this mode, the meter automatically identifies and measures DC voltage, AC voltage, resistance, and continuity.

1. Press the Power key to turn on the meter. The display will show "Auto".
2. Insert the red probe into the "INPUT" jack and the black probe into the "COM" jack.
3. Contact the probes with both ends of the measured subject. The meter will automatically recognize the signal.
4. Read the results from the display.

Note: The minimum measurable voltage in this mode is about 0.8V.

5.7. Frequency Measurement

1. Press the Power key to turn on the meter.
2. Press the FUNC key to select the "Hz" gear.
3. Insert the red probe into the "INPUT" jack and the black probe into the "COM" jack.
4. Contact the probes with both ends of the measured subject.
5. Read the results from the display.

5.8. Capacitance Measurement

1. Press the Power key to turn on the meter.
2. Press the FUNC key to select the "Cap" gear.
3. Insert the red probe into the "INPUT" jack and the black probe into the "COM" jack.
4. Contact the probes with both ends of the measured capacitor.
5. Read the results from the display.

5.9. Diode Measurement

1. Press the Power key to turn on the meter.
2. Press the FUNC key to select the "Diode" gear.
3. Insert the red probe into the "INPUT" jack and the black probe into the "COM" jack.
4. Connect the red probe to the anode of the diode and the black probe to the cathode of the diode.
5. Read the forward bias value on the display screen.

Note: If the test leads are inversely connected, the display will show "OL" (Overload), which can be used to distinguish the anode and cathode of the diode.

5.10. Live Wire Detecting

1. Press the Power key to turn on the meter.
2. Press the FUNC key to select the "LIVE" gear.
3. Insert the red probe into the "INPUT" jack and remove the black probe.
4. Use the red probe to contact the conductor.

When a weak electric field signal is detected, the buzzer will sound slowly and the green light will illuminate. When a strong electric field signal is detected, the buzzer will sound quickly and the red light will illuminate, and the screen will display "---H".

5.11. Phase Sequence Detection

1. Press the Power key to turn on the meter.
2. Press the FUNC key to select the "Phase" gear to enter the phase sequence detection state.
3. Follow the on-screen prompts:
• Display the "PA" symbol with the "A" letter flashing and plug in the sensing probe to the first phase line socket, waiting for a beep.
• Display the "PAB" symbol with the "B" letter flashing and plug in the sensing probe to the second phase line socket and wait for a beep.
• Display the "PABC" symbol with the "C" letter flashing and plug in the sensing probe to the third phase line socket and wait for a long beep.
4. At the end of the test, the display will show the measurement results.

Note: The "PL" symbol indicates a left-handed phase sequence, and the "PR" symbol indicates a right-handed phase sequence. Please complete the test on the three wires within 1 minute, otherwise a timeout error will occur. In case of a timeout error, please return to the phase sequence detection function for a retest.

5.12. Video Demonstration

Watch this video for a visual guide on how to use the GVDA GD107 Multimeter for various measurements including auto-ranging, resistance, voltage, continuity, diode, live wire detection, phase sequence, and capacitance.

6. Maintenance

6.1. Cleaning

To clean the meter:

1. Turn off the meter power and remove the probes.
2. Wipe the case with a damp cloth or mild detergent. Do not use abrasives or solvents.
3. Wipe the contacts in each input socket with a clean swab soaked in alcohol.

Warning: Always keep the inside of the meter clean and dry to prevent electric shock or damage to the meter.

6.2. Battery Replacement

Refer to section 4.1 for detailed instructions on battery installation and replacement. Replace batteries immediately when the low battery indicator appears on the display to avoid measurement errors.

7. Troubleshooting

• Meter not turning on or erratic readings: Check battery installation and ensure batteries are not depleted. Replace if necessary.
• "a" symbol displayed: This indicates low battery. Replace the batteries promptly to ensure accurate measurements.
• "OL" displayed: This typically means the measurement is out of range or there is an open circuit. For diode tests, it can also indicate reversed polarity.
• Phase sequence detection timeout: If the PABC symbol appears and the P letter flashes, it means the test was not completed within 1 minute. Re-enter the phase sequence detection mode and retest.
• No display or damaged casing/probes: Do not use the meter. Contact support for assistance.

8. Specifications

9. User Tips

• The GVDA GD107 is versatile, capable of measuring resistance, capacitance, AC voltage, DC voltage, and performing continuity and diode measurements.
• Key features include live wire detection, phase sequence detection, low battery indication, input polarity indication, and an auto power-off function for convenience and battery saving.
• Always ensure the probes are correctly connected and the appropriate measurement mode is selected for accurate readings.
• For optimal performance and safety, regularly check the device and probes for any signs of damage.

10. Warranty and Support

For any technical support, warranty claims, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.

A detailed user manual in PDF format is available for download: View User Manual (PDF).