1. Introduction
The VLIKE VL6708 Digital Sound Level Meter is a precision instrument designed for measuring sound levels in various environments. It is suitable for monitoring noise in factories, workshops, schools, residential areas, offices, and during audio analysis. This device provides accurate real-time sound data within a range of 30 dB to 130 dB, with selectable A/C weighting modes.
The meter is equipped with a digital display, good anti-interference performance, and power-saving features. Its backlight function ensures readability in low-light conditions, with an automatic power-off feature to conserve battery life. The robust casing, made through a composite material injection molding process, offers anti-drop protection and durability.
2. Safety Information
Please read and understand all safety instructions before operating the VLIKE VL6708 Digital Sound Level Meter. Failure to follow these instructions may result in injury or damage to the device.
- Do not use the meter in hot or humid environments to prevent damage to internal components.
- If the meter will not be used for an extended period, remove the batteries to prevent electrolyte leakage, which can damage the instrument.
- When measuring outdoor noise, always mount the wind-resistant foam ball onto the microphone head. This prevents direct wind interference and other extraneous noise from affecting measurement accuracy.
- The meter is calibrated before delivery. Calibration by professional engineers, a third-party testing organization, or an accredited laboratory is recommended if recalibration is deemed necessary.
3. Product Components
The VLIKE VL6708 Digital Sound Level Meter package includes the following items:
- VLIKE VL6708 Digital Sound Level Meter
- Black carrying case bag
- User Manual
Image: VLIKE VL6708 Sound Level Meter, carrying case, and user manual.
3.1. Device Overview
Image: Front view of the VLIKE VL6708 Digital Sound Level Meter with key components labeled, including the sponge cover, LCD, ON-OFF button, Data Hold button, Backlight button, Up/Down buttons, Fast/Slow Speed button, Max-Min button, and A/C Mode Switch.
- Sponge Cover: Protects the microphone from wind and dust, improving measurement accuracy.
- LCD: Digital display for showing sound level readings, measurement modes, and other indicators.
- ON-OFF Button: Powers the device on or off.
- Data Hold (H) Button: Locks the current measurement value on the display.
- Backlight Button: Activates or deactivates the display backlight for improved visibility.
- Up/Down Buttons: Adjust the measurement range manually.
- Fast/Slow Button: Toggles between fast and slow measurement frequency response modes.
- MAX/MIN Button: Displays the maximum or minimum recorded sound level during a measurement session.
- A/C Mode Switch: Selects between A-weighting (human ear perception) and C-weighting (flat frequency response) modes.
- dB/Sone Button: Switches between Decibel (dB) and Sone units for measurement results.
Image: Detailed view highlighting the high-precision noise sensor, the backlit LCD screen, and the anti-slip design of the meter's casing.
4. Setup
4.1. Battery Installation
The VLIKE VL6708 Digital Sound Level Meter requires four (4) AAA batteries (not included) for operation.
- Locate the battery compartment on the back of the device.
- Use a screwdriver to unscrew the screw securing the battery compartment cover.
- Carefully remove the battery compartment cover.
- Insert four AAA batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
- Replace the battery compartment cover and secure it with the screw.
Video: This video demonstrates the process of installing AAA batteries into the VLIKE VL6708 Digital Sound Level Meter. It shows how to unscrew the battery cover, insert the batteries with correct polarity, and re-secure the cover.
5. Operating Instructions
5.1. Power On/Off
- Press the green ON-OFF button to turn the device on.
- Press and hold the green ON-OFF button again to turn the device off.
5.2. Measurement Range Adjustment
Upon startup, the default measurement range is 30 dB to 130 dB. You can adjust this range for more precise measurements:
- Use the Up and Down arrow buttons to customize the measurement range. Smaller range increments allow for quicker and more accurate readings.
5.3. Data Hold Function
- Press the H (Data Hold) button to lock the current sound level reading on the display. This allows for convenient monitoring without fluctuations.
- Press the H button again to release the hold and resume real-time measurements.
5.4. Fast/Slow Response Mode
- Press the FAST/SLOW button to toggle between fast and slow measurement frequency response modes.
- Fast Mode: Suitable for capturing sudden, short bursts of noise.
- Slow Mode: Ideal for measuring average noise levels over a longer period, providing a more stable reading.
5.5. MAX/MIN Measurement
- Press the MAX button to display only the highest recorded sound level during the current measurement session.
- Press the MAX button again to display the minimum recorded sound level.
- Press it a third time to return to real-time measurement.
5.6. A/C Weighting Mode Selection
- Press the A/C button to switch between A-weighting and C-weighting modes.
- A-Weighting (dBA): Simulates the human ear's response to sound, commonly used for environmental noise measurements and occupational health assessments.
- C-Weighting (dBC): Provides a flatter frequency response, suitable for measuring peak sound levels or mechanical noise.
Image: Close-up of the VLIKE VL6708 display and buttons, illustrating the A/C mode selection for environmental or mechanical sound measurement.
5.7. dB/Sone Unit Selection
- Press the dB/SONE button to switch between Decibel (dB) and Sone units for measurement results.
- Decibel (dB): Standard unit for sound intensity, used in audio engineering, noise monitoring, and acoustic research.
- Sone: A unit of perceived loudness, useful for assessing subjective human perception of sound, often used in entertainment and media industries.
5.8. Backlight Activation
- Press the Backlight button (asterisk symbol) to activate the display backlight. This enhances visibility in dimly lit environments.
- Press the button again to turn off the backlight.
5.9. Understanding Sound Levels
The VLIKE VL6708 helps you understand how loud is too loud. Government research suggests the safe exposure limit is 85 dB for eight hours a day.
Image: A visual guide showing common sound sources and their corresponding decibel levels, ranging from quiet environments to those causing potential hearing damage. The chart highlights the safe exposure limit of 85 dB.
Image: A color-coded decibel scale providing a quick reference for sound intensity, from silent (1-15 dB) to levels causing great damage (100+ dB).
6. Maintenance
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the meter to extreme temperatures or humidity.
- Store the meter in its carrying case when not in use to protect it from physical damage.
- Regularly check the battery compartment for any signs of corrosion.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Batteries are dead or incorrectly installed. | Replace batteries with new AAA batteries, ensuring correct polarity. |
| Inaccurate readings. | Microphone not properly covered by sponge ball; environmental interference; incorrect mode selected. | Ensure sponge ball is in place. Avoid strong wind or direct impact. Select appropriate A/C weighting mode. Consider professional calibration if issues persist. |
| Display is dim or unreadable. | Backlight is off; low battery. | Press the backlight button to activate. Replace batteries if low battery indicator is shown. |
| Data not updating. | Data Hold function is active. | Press the 'H' button to deactivate Data Hold. |
8. Specifications
- Model: VL6708
- Measurement Range: 30 dB to 130 dB
- Accuracy: +/- 1.5 dB
- Frequency Weighting: A and C
- Frequency Response: 31.5 Hz to 8.5 kHz
- Resolution: 0.1 dB
- Display: Digital LCD with Backlight
- Power Source: 4 x AAA Batteries (not included)
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
- Operating Humidity: 10% to 80% RH
- Dimensions: Approximately 20 x 5.5 x 2.6 cm (8 x 2.4 x 1.2 inches)
- Weight: Approximately 7.8 ounces (221 grams)
- Special Features: Max/Min Hold, Data Hold, Fast/Slow Response, Auto Power Off
Image: Diagram showing the physical dimensions of the VLIKE VL6708 Digital Sound Level Meter, including its length (193mm), width (60mm), and thickness (29mm).
9. Warranty & Support
VLIKE products are designed and manufactured to the highest quality standards. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty details, including duration and coverage, please refer to the documentation included with your purchase or contact VLIKE customer support.
For technical assistance, troubleshooting, or any questions regarding your VLIKE VL6708 Digital Sound Level Meter, please contact VLIKE customer support through the official website or the contact information provided in your product packaging. Please have your model number (VL6708) and purchase details ready when contacting support.