Integrating Sound Level Meter / EN
08/15/16 Version No. 01
8
-20.0
-10.0
0.0
10.0
20.0
31.5Hz
63Hz
125Hz
250Hz
500Hz
1000Hz
2000Hz
4000Hz
8000Hz
(dB)
Freq
units
31.5
Hz
63
Hz
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
8000
Hz
dB
+1.2
+0.7
+0.4
+0.2
0.0
0.0
0.0
+0.1
-3.7
Typical diffuse-field response for random incidence
Preamplifier:
•
Model: AP-21
•
Input impedance: 470M
Ω
•
Output impedance: 550
Ω
at 1000Hz
•
Maximum input voltage: 2.828V peak-to-peak at electrical input for no damage.
•
Measuring input (viewed from top of instrument):
A: ground
B: ground
C: +10V
D: signal input
E: N.C.
Display LCD
•
Display screens:
4 digit numerical indication of sound level, from 30.0 to 130.0dB with 0.1dB
resolution.
Bar-graph indication of current sound level with 1dB resolution.
Sound level range indicator: 30–90dB, 40–100dB, 50–110dB, 60–120dB or
70–130dB in five ranges.
Time display; year – month – day and hour: minute: second.
•
Display update rate: 1 second
•
Display first indication: Depends on the condition the instrument when it was last
turned off.
