Settings; Weighting; Level Range - Phonic PAA3 Manual Del Usuario

SETTINGS

The sub-menus of SETTING include WEIGHTING, LEVEL
RANGE, MAX LEVEL, PEAK HOLD, RESPONSE TIME,
and CALIBRATION.

Weighting

Any audio analyzer needs to be designed so that it
hears sound properties in the same way as humans.
Generally, the sensitivity of human hearing is restricted to
the frequency range of 20 Hz to 20 kHz. The human ear,
however, is most sensitive to sounds in the range of 500
Hz to 8 kHz. The ear becomes progressively less sensitive
to sound out of this range.
To account for this limitation of human hearing, many
audio analyzers, including the PAA3, incorporate a filtering
of acoustic signals according to frequency. This filtering
(weighting type) is devised to correspond to the varying
sensitivity of the human ear to sound over the audible
frequency range. The PAA3 comes with both A-weighting
and C-weighting standardized by the ANSI (American
National Standards Institute). A-weighting is the most
frequently used weighting type and is used for measuring
lower sound levels, while Cweighting is best suited for
higher sound levels. The user can set the weighting for
measurements in dBu, dBV or voltage.
SETTING
WEIGHTING
FLAT
A
C
ESC
A 31
100 315 1K
Procedure:
Go to the SETTING/ WEIGHTING menu.
1.
Select an appropriate weighting for the measurement.
2.
A tick appears next to your selection.
Press ESC to the previous menu.
3.
PAA3
3.15K
10K

Level Range

The PAA3 has three different ranges for measurements in
SPL, dBu, dBV and voltage.
SPL: 30 ~ 9 0 / 50 ~ 1 10 /
dBu: - 50 ~ + 10 / -35 ~ + 25 / - 20 ~ + 40
dBV: - 52 ~ + 8 / - 37 ~ + 23 / - 22 ~ + 38
VAC: 5 m ~ 2 .45V / 14m ~ 1 4V / 77.5m ~ 8 0
SETTING
LEVEL RANGE
30 ~ 90 dBSPL
50 ~ 110 dBSPL
70 ~ 130 dBSPL
ESC
A 31 100 315 1K
Procedure: Go to the SETTING menu, and proceed onto the
1.
LEVEL RANGE menu.
Select an appropriate level range for your measurement
2.
and press the ENTER button.
Press ESC to return to the previous menu, or hold
3.
the ENTER button for 2 seconds to revert back to the
RTA screen.
7 0 ~ 130
V
3.15K 10K
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