4
INTRODUCTION
The
NL Sonic Tester
is an accuracy checker that is used together with the
NL Camera
. The device produces a
sound signal that is perceived and evaluated by the camera. The perceived dB-level of the signal can be used
to ensure the correct level of the NL Camera’s readings and the condition of the microphone array.
User Safety
The NL Sonic Tester is capable of delivering sound pressure levels that may cause permanent
hearing damage. The user of the device should always use hearing protection when the device
is operated at a distance less than 0.5 m to avoid permanent hearing damage.
!! NOTE: Sound pressure level may exceed 80 dB (A) at a distance less than 0.5 m.
• Follow all instructions. Please note that by using the device you agree to the terms of use. Misuse might
cause hearing damage, device damage or false readings.
• Do not try to repair the device or open the enclosure of the NL Sonic Tester. Do not use a damaged device
or damaged power cords.
• Use only the power supply provided by the NL Camera with the NL Sonic Tester.
• Protect the device and accessories from dirt, dust, impacts, and liquids.
• Do not leave the device plugged in.
