Response Time Options; Practical Measurement Conditions - AEMC CA832 User Manual

4.2.3

Response Time Options

Depending on the nature of the noise under consideration (brief noises
such as a horn or an animal cry or prolonged noise such as industrial
machinery), an adequate measurement response time must be chosen.
The two response times available on the CA832 are:
F - Fast (shorter) response time filter: This is the most common. It is used if
the noise is made up of brief pulses or if only the peak values interest you.
S - Slow (longer) response time filter: Used to measure a medium sound
level.
The three-position slide switch is used to move from one to the other.
4.2.4

Practical Measurement Conditions

Hold the instrument in the hand and direct the microphone towards the
source of noise to be measured (see § 4.1.2). The sound level will be
displayed.
Press the MAX push-button to display the maximum sound level during
the measurement.
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Sound Level Meter Model CA832