Instruction manual

36
Setting Measurement Parameters
Before carrying out a measurement or frequency analysis with this unit, the measurement parameters
must be set up as described below.
Menu screen settings
SETUP menu screen
MEASURE MODE: LEQ Lx
Selects whether to measure power (L
eq
) or percentile values
(L
x
).
Leq Time: 1 to 99 S 1 to 99 M 1 to 99 H
Sets the measurement time for power measurements. Possible
settings are 1 to 99 seconds in 1 second steps, 1 to 99 minutes
in 1 minute steps, 1 to 99 hours in 1 hour steps.
Lx Time: 10 to 99 S 1 to 99 M 1 to 99 H
Sets the measurement time for percentile measurements. Pos-
sible settings are 10 to 99 seconds in 1 second steps, 1 to 99
minutes in 1 minute steps, 1 to 99 hours in 1 hour steps.
BACK ERASE TIME:0 to 5 S
Sets the time for the back-erase function, by which data from a
certain interval before pressing the PAUSE/CONT key can be
excluded from processing. Possible settings are 1 to 5 seconds
in 1 second steps. (See pages 66 to 67.)
Lmax / Lmin TYPE: AP BAND
Selects either all-pass (AP) maximum or band (BAND) maxi-
mum for L
max
/L
min
measurement.
AP max. mode
The frequency band levels at the point when the all-pass level
became maximum or minimum within the preset measurement
time are held.
BAND max. mode
The frequency band levels at the point when each band level
became maximum or minimum within the preset measurement
time are held.