
13
Controls
CAL (CALIBRATION)
Your meter has been accurately calibrat-
ed and normally will not require further ad-
justment. If adjustment is necessary, we
recommend you take the sound meter to
an audio professional for proper calibra-
tion via the
CAL recess.
MEASUREMENTS
Important:
• Do not hold the meter directly
between you and the sound source,
as this might produce an error of sev-
eral decibels in the frequency range
above 100 Hz. Position the meter so
an imaginary line between you and
the meter is perpendicular to a line
between the meter and the sound
source.
• Handle the meter carefully. The
microphone and meter movement are
fragile and might be damaged if the
instrument is dropped. Do not oper-
ate the meter at a range setting that
causes pegging of the needle. This
could damage the movement.
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