51
Measurement
Note
This unit uses high-speed sampling of the sound
pressure waveform for L
eq
and L
E
processing
(NL-21: 30.3 µs, NL-31: 20.8 µs). The result is
therefore unaffected by dynamic characteristics
and accurate also for a short time period.
The auxiliary processing function for equivalent
impulse sound level is affected by the dynamic
characteristics.
5. Use the menu to set the measurement time.
Press the Menu key to call up the menu screen 1/5.
S t a r t
S t o p S t o r e
M o d e
P a u s e
C o n t
F a s t
S l o w
M e n u
P a g e
R a n g e
R e c a l l
F r e q
L i g h t
P r i n t
P o w e r
S O U N D L E V E L M E T E R
R e c a l l
d a t a
D o w n
C a l a d j
C a l
U p
A
C
F L A T
N L - 2 1
F a s t
P a g e
D o w n
U p
A C
F L A T
S l o w
P r e s s i n g t h e M e n u k e y e n a b l e s
t h e P a g e U p / D o w n k e y f u n c t i o n
M e n u k e y
A / C / F L A T k e y
P a u s e / C o n t k e y
F a s t / S l o w k e y
R a n g e k e y s
P o w e r k e y
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