7
SL355-en-GB_V1.8 8/17
7. Calibration Procedure
1. A standard 114db acoustic calibrator is required (as shown in diagram below).
2. Insert the meter’s microphone carefully into the insertion hole of the calibrator (as shown).
3. Switch the calibrator ON and set its output amplitude to 114 db.
4. Switch the meter ON.
5. Access the Calibration mode (CL) by repeatedly pressing the MENU button until the
CL XX.X
display is shown and the
SLM
,
DATA
,
SETUP
, and
OPTION
mode icons are all switched off
(refer to accompanying screen shot illustration).
6. Adjust the meter’s potentiometer (recessed at top of meter) using the supplied adjustment tool
until the display reads 114db, matching the 114db output level of the calibrator.
7. Press the RUN/PAUSE/RETURN button to save the calibration.
