Ⅸ
Ⅸ
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. CALIBRATION PROCEDURES
Acoustic Calibration with sound calibrator TES-1356
Ov
Un
Un
Ov
1. Turn off the sound calibrator.
2. Press
key turn on the meter.
3. Insert the microphone very carefully and slowly all the way
into the sound calibrator coupler.
4. Set the power switch of the sound calibrator to 94dB.
5. Adjust the CAL potentiometer of the meter, until display
reading is 94.0dB.
6. Set the power switch of the sound calibrator to OFF.
7. Remove the microphone very carefully and slowly from the
coupler.
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. MEASUREMENT
10-1 When using this meter, all processing functions provided
by the meter are carried out simultaneously. For
example, when sound level measurement is selected, the
maximum sound level are also determined.
Sound level measurement :
1. Press
key turn on the meter, the default settings is
A frequency weighting, fast time weighting and 60 to
120dB sound level range.
2. Press “A” or “C” keys to select desired frequency
weighting. For normal sound level measurements,
select “A” setting.
3. Press “FAST” or “SLOW” keys to select desired time
weighting (dynamic characteristics). Normally the
“FAST” setting should be used.
4. When performing measurements according to IEC or
other standards, the frequency and time weighting
setting required by the standard should be selected.
5. Press “
▲
” or “
▼
” keys to select the desired level
range. Choose a setting in which the bar graph
indication to about the middle of the range. If the
“
OV
” (Over) or “
UN
and
—
—
—
—
—
—
—
—
—
—
—
—
” (Under) indicates
light up frequently, change the level range setting.
6. The numeric level indication shows the currently
measured sound level and the elapsed measurement
time. The reading is update once every second.
7. Press “MAX” key to cycle switch the currently sound
level with elapsed measurement time
the maximum
sound level (“max” is shown) with measured elapsed
time
the minimum sound level ( “min” is shown) with
measured elapsed time.
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