Circuit-test DMS-4420, Руководство пользователя

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CIRCUIT-TEST
DMS-4420
DMS-4420
7
3. Calibration Procedures
Using a standard Acoustic Calibrator (94dB, 1KHz Sine
wave)
1. Make the button settings display: dBA
Time weighting: FAST
2. Insert the Microphone nozzle carefully into the
insertion hole of the calibrator.
3. Press the A/C and the HOLD button simultaneously
for more than 1 second and the LCD will start
blinking to confirm calibration.
4. When the LCD stops blinking, release the A/C and
Acoustic calibrator
Sound level meter