Lutron Electronics SL-4010, Руководство по эксплуатации, Страница: 7 / 8

6. CALIBRATION
*
The sound level meter is built in the internal
" External calibration VR " ( 3-5, Fig. 1 ) on the front
panel.
*
Please according the following procedures to calibrate
the instrument accurately, if it is necessary.
1)
Prepare the optional " SOUND CALIBRATOR, model:
SC-941, SC-942 or other equivalent sound calibrator.
Power on the Sound Calibrator & plug calibrator output
into the " Electric condenser micro- phone " ( 3-1, Fig. 1 )
of the Sound Level Meter.
2)
Slide the " Range switch " ( 3-4, Fig. 1 ) to " 50 - 100 dB "
position.
3)
Carefully adjust the " Calibration VR " ( 3-5 ) with " - "
screw driver, until the display read within " 94.0 ± 0.2 " dB.
5
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