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Instruction manual

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Sound Pressure Level Measurement
Percentile Sound Pressure Level Measurement (L
x
)
To make the percentile sound pressure level measurement, carry out the following steps.
The procedure is almost identical to the equivalent continuous sound pressure level mea-
surement.
1. Set the power switch on the side of the unit to ON and wait until the measurement
screen appears.
(For an explanation of the power-on procedure, refer to page 42.)
2. Press the SETUP key to call up the SETUP menu screen.
(For an explanation of how to use the SETUP menu screen, refer to page 30.)
3. Set "MEASURE MODE" to "Lx".
4. Set the measurement time with the "Lx Time" item. The maximum setting is 99
hours.
5. If desired, you can use the trigger function (p. 68), or the delayed measurement
function (p. 74). For more information, please refer to the respective pages.
6. Press the DISPLAY key to bring up the DISPLAY menu screen.