General-tools-and-instruments DSM8921 Manual de usuario descargar pdf (Pagina 6)

SELECTING A AND C WEIGHTING

When you turn the meter on, it will be in

A weighting mode.

A weighting enables the meter to

respond in the same manner as the

human ear, which increases and

decreases amplitude over the

frequency spectrum.

Applications for A weighting include

OSHA regulatory testing, environ-

mental measurement, workplace

design, and law enforcement.

C weighting is suitable for flat response

measurements with no increase or

decrease of amplitude over the

frequency spectrum. Applications for

C weighting include the sound level

analysis of engines and machinery.

Press the C/A key to toggle between A

and C weighting. A small A or C will be

displayed on the right side of the screen

to indicate the current mode.

Fig.3

SPL

+10

1 2 3 4 5 6 7 8 9 10 11 ... 15 16

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General-tools-and-instruments DSM8921 Manual de usuario Pagina 6