Sper Scientific 850014 Sound Level Meter - Mini User Manual

Page 6

3-D. CALIBRATION
Use Sper Scientific Acoustical Calibrator

850016 (or equivalent) to calibrate the meter.

Perform the calibration at temperatures

between 58~78°F (15~25°C). The calibrator

and meter should be at the same temperature.

• Remove the

WINDSCREEN (1) and

turn on the meter by pressing the

POWER (9) button.

• Turn the acoustical calibrator on to 94.0 dB

and place it onto the

MICROPHONE (2).

• With the meter in FAST response mode

and A (dBA) weighting, press and hold the

A/C (4) button.

• Without releasing the

A/C (4) button,

press and hold the

HOLD (5) button.

The display will go blank.

• Release both buttons and “94.0” ± 0.2

is displayed.

• The calibration process can be repeated

until the meter reads the desired value.

• This completes the calibration process.

4. AUTO POWER OFF
If no buttons are pushed for about 3 minutes,

the meter will automatically turn off.