Toa DP-L2 - Page 20

20
ADJ . Z ERO S : + 1 0
0dB L: –3
11
10
9
8
7
6
5
4
3
2
1
0
0
dB
–3
–6
–9
–12
80 dB
68 dB
Noise range in which you desire
to control the output level.
Ambient noise level
SENSOR level
SENSOR level
Output level
Output level
ZERO level set by following MIN NOISE SET
instruction (Step 4-1)
ZERO level correction value
Current noise level (A)
Adjusted output level
ADJ . Z ERO S : 0
+10dB L: –12
11
10
9
8
7
6
5
4
3
2
1
0
0
dB
–3
–6
–9
–12
80 dB
68 dB
+10 dB
Noise range in which you desire
to control the output level.
Ambient noise level
SENSOR level
SENSOR level
Output level
Output level
ZERO level set by following MIN NOISE SET
instruction (Step 4-1)
ZERO level correction value
Current noise level (A)
Adjusted output level
Correct the ZERO level to this position.
Increase
[When the preset minimum ambient noise level is extremely lower than the actual level]
In this case, the unit recognizes that the ambient noise is high even in low ambient noise condition (A) where
the unit is actually used, providing sound output at high level (–3 dB in this example).
Correct the ZERO level to a higher level to obtain the optimum operation according to the cases (1) and (2)
below.
(1) If the current noise level (A) is the minimum ambient noise level when the unit is actually used, increase
the ZERO level so that the SENSOR level (S) becomes "0."