Circuit-test DMS-4420, Руководство пользователя

Страница: 11 / 16

CIRCUIT-TEST
DMS-4420
DMS-4420
9
6. Measurement
1. Open battery cover and install a 9 Volt battery in
battery compartment.
2. Turn on power and select the desired response
time and weighting. If the sound source consists of
short bursts or only catching sound peak, set
response to FAST. To measure average sound
level, use the slow setting. Select A weighting for
general noise sound level and C weighting for
measuring sound level of acoustic material.
3. Hold the instrument comfortably in hand or fix on
tripod and point the microphone at the suspected
noise source, the sound pressure level will be
displayed.
4. When MAX/ MIN (maximum, minimum hold) mode
is chosen. The instrument captures and holds the
maximum or minimum noise level. Press once to
select MAX value. Press again to select MIN value,
Press again to exit the MAX/MIN mode. “MAX” or
“MIN” symbol disappears.
5. Turn off the instrument and remove the battery
when it is not in use.