3M SD-200, Руководство пользователя

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9 Calibrating
Calibrating
A field calibration may be performed before taking measurements to ensure
that your measurements are accurate for the current environment. An
optional calibrator and calibrator adapter are used for this procedure. (See
“Accessories” for more information).
1. While the instrument is off, press and hold key and then press
key. Then release the keys. “CAL” will appear on the screen.
2. Place the calibrator adapter and the calibrator over the microphone, and
then turn the calibrator on.
3. To adjust the level to match the calibrator, press either key to
increase or key to decrease.
4. To accept the level, press key or press key to cancel.
Figure 1-10: Calibrating the SD-200
Self help
Resetting
In the event your SD-200 locks up for an unknown reason, the SD-200 is equipped with a
reset feature. To reset the instrument, press and hold key for at least 20 seconds and
then release the key. The instrument will power back on.

Note: after a reset, L
EQ
/L
AVG
, LED Alert , M
AX
, and M
IN
, measurement screens will
display dashes, “--.-” and Run-Time will display zero, “0:00”.
Please see “Contact/Service information” for additional support.
CAL screen
Calibrator (QC-10)
Calibrator adapter
Accepts
Cancels
Decrease
Increase