PEAKMETER PM6708 Digital Sound Level Meter User Manual

1. Introduction

The PEAKMETER PM6708 is a compact and lightweight digital sound level meter designed for accurate audio decibel monitoring. It converts ambient sound into electrical signals, processes the data, and displays results on an LCD. This device is suitable for monitoring noise levels in various environments such as hotels, conference halls, home theaters, and hospitals.

Key features include A and C weighted network selection, a clear LCD with backlight for low-light conditions, and an integrated sponge ball to filter out unwanted signals, ensuring precise measurements.

2. Product Components

Familiarize yourself with the main components of your PEAKMETER PM6708 Digital Sound Level Meter:

Figure 2.1: Labeled diagram of the PEAKMETER PM6708 Digital Sound Level Meter, highlighting the sensor, sponge cover, LCD display, and function keys for user interaction.

• Sensor: Located at the top, responsible for detecting sound waves.
• Sponge Cover: Placed over the sensor to reduce wind noise and filter unwanted signals.
• LCD Display: Shows measurement readings, settings, and battery status.
• Function Keys: Buttons for controlling various settings and modes of the device.

3. Setup

3.1 Battery Installation

1. Locate the battery compartment on the rear of the device.
2. Open the battery compartment cover.
3. Insert four (4) 1.5V AAA batteries, ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.

3.2 Attaching the Sponge Cover

Gently slide the provided sponge cover over the microphone sensor at the top of the device. This helps to minimize wind interference and improve measurement accuracy.

Figure 3.1: Close-up view of the microphone with the sponge cover properly attached, ready for use.

4. Operating Instructions

4.1 Power On/Off

• To power on the device, press the Power button (usually marked with ⑉).
• To power off, press and hold the Power button until the display turns off.

4.2 Taking a Measurement

1. Ensure the device is powered on and the sponge cover is attached.
2. Hold the meter in the area where you wish to measure sound levels. Ensure the microphone is pointed towards the sound source.
3. The current sound level in decibels (dB) will be displayed on the LCD screen.

Figure 4.1: The PEAKMETER PM6708 being held to measure noise levels in a typical indoor setting.

4.3 A/C Weighting Selection

The device offers two frequency weighting characteristics:

• A-Weighting (dBA): Mimics the human ear's response to sound. It is commonly used for environmental noise measurements and occupational health assessments.
• C-Weighting (dBC): Provides a flatter response, measuring the true sound pressure level across a wider frequency range. It is often used for measuring peak noise levels or for analyzing low-frequency noise.

To switch between A and C weighting, press the A/C button. The selected weighting will be indicated on the LCD.

4.4 FAST/SLOW Response Time

The PM6708 allows selection between two dynamic characteristics for sound pressure measurement:

• FAST (125ms): Suitable for measuring rapidly changing noise levels.
• SLOW (1sec): Ideal for measuring average noise levels or when the sound level is relatively stable.

Press the FAST/SLOW button to toggle between these response times.

4.5 MAX Data Hold

To capture and display the maximum sound level recorded during a measurement session:

1. While measuring, press the MAX button. The display will hold the highest decibel reading.
2. Press the MAX button again to exit MAX hold mode and resume real-time measurement.

4.6 Backlight Function

For improved visibility in low-light conditions, press the Backlight button (often indicated by a light bulb icon) to activate the LCD backlight. Press it again to turn off the backlight.

5. Maintenance

5.1 Cleaning the Device

Wipe the exterior of the sound level meter with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the casing or display. Ensure no moisture enters the device.

5.2 Sponge Cover Care

The sponge cover helps filter unwanted signals. Periodically inspect it for wear or damage. If it becomes dirty, gently remove it and clean it with mild soap and water, then allow it to air dry completely before reattaching. Replace if significantly damaged.

5.3 Battery Replacement

When the low battery indicator appears on the LCD, replace all four AAA batteries promptly to ensure accurate readings and continuous operation. Refer to Section 3.1 for battery installation instructions.

5.4 Storage

When not in use for extended periods, remove the batteries to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. Use the provided black bag for protection.

6. Troubleshooting

• Device does not power on: Check if batteries are installed correctly and have sufficient charge. Replace batteries if necessary.
• Inaccurate readings: Ensure the sponge cover is clean and properly attached. Verify that the correct A/C weighting and FAST/SLOW response settings are selected for your application. Avoid measuring in strong electromagnetic fields.
• Display is dim or flickering: Replace batteries. If the issue persists, the backlight may be faulty.
• No display: Check battery installation and charge. If the problem continues, contact customer support.

7. Specifications

The following table outlines the technical specifications of the PEAKMETER PM6708 Digital Sound Level Meter:

Figure 7.1: Dimensions of the PEAKMETER PM6708 Digital Sound Level Meter.

8. Safety Information

• Do not attempt to open or modify the device. Internal repairs should only be performed by qualified personnel.
• Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
• Keep the device away from strong magnetic fields.
• Dispose of batteries according to local regulations. Do not mix old and new batteries or different types of batteries.
• This device is designed for measuring sound levels. Do not use it for any other purpose.

9. Package Contents

Upon unpacking, ensure all items listed below are present:

• 1 x PEAKMETER PM6708 Digital Sound Level Meter
• 1 x Black Carrying Bag

10. Warranty and Support

For warranty information or technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.