4. MEASURING PROCEDURE
1) Slide the " Power off/On selector " ( 3-10, Fig 1 )
to the " On " position.
0 = Off, 1 = On
2) For the instant display reading, slide the " Max. hold
& Instant display selector " ( 3-4, Fig. 1 ) to the "
Instant " position. General application always select
the " Instant " function. For the " Max. hold " function,
please refer the 4-7, page 6.
3) Slide the A/C weighting selector ( 3-7, Fig. 1 ) to
"A" or "C" position for sound level measuring.
NOTE :
a. The characteristic table of A, C weighting,
please ref. page 9.
b. The characteristic of A weighting is simulated
as the "Human Ear Listening" response.
Typically, if making the environmental sound
level measurement, always select the A
weighting typically.
c. The C weighting characteristic is near the
"FLAT" response. Typically, it is suitable for
checking the noise of machinery (Q.C. check)
& knowing the real sound level of the tested
equipment.
4) Determine proper measuring range by selecting
the " Range selector " ( 3-9, Fig. 1 ) to minimize the
tolerance of readout. When left corner of LCD
show " " indicator, ( 3-12, Fig. 1 ), it shows the
▲
dB range selection is upper or lower setting. Slide
range selector to other range for measuring.
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