SL510-en-GB_V1.0 8/17
Operation
1. Power the meter by pressing the power button. The meter will begin displaying sound
level readings. If the LCD does not switch on, check the batteries located in the rear battery
compartment.
2. Hold the meter in hand facing the microphone toward the source of the sound to be
measured.
3. View the measurement on the meter’s LCD
‘A’ and ‘C’ Frequency Weighting
Press the A/C button to select A or C frequency weighting. The A or C icon will appear in the
display to indicate the weighting selected.
With ‘A’ weighting selected, the frequency response of the meter is similar to the response of
the human ear. ‘A’ weighting is commonly used for environmental or hearing conservation
programs such as OSHA regulatory testing and noise ordinance law enforcement. ‘C’ weighting is
a much flatter response and is suitable for the sound level analysis of machines, engines, etc.
Most noise measurements are performed using 'A' Weighting and FAST Response.
‘FAST’ and ‘SLOW’ Time Weighting
Use the button to select FAST (125 ms) or SLOW (1 second) time weighting. The F or S icon
will appear in the display as selected.
Select FAST to capture noise peaks and noises that occur very quickly. Select the SLOW response
to monitor a sound source that has a consistent noise level or to average quickly changing levels.
Select FAST response for most applications.
Data Hold
To freeze a displayed reading, press the H button. The H icon will appear and the most recent
reading will appear in the display. Press the H button to exit the mode and return to normal
operation
Backlight
The LCD is equipped with backlighting for easier viewing, especially in dimly lit areas. Press the
backlight button to turn the backlight on. The backlight will automatically turn off after 10
seconds.
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