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Chapter 8 Specifications
8.6 NVT-182 Waterproof Microphone Unit
Performance
a)
Mounting
b)
Device
c)
Directivity
d)
Range of receive
e)
Power supply
f)
Microphone test
g)
Compass safety distance
1)
Standard
2)
Steering
Environmental condition
a)
Operating temperature
b)
Temperature and humidity
c)
Vibration
d)
Protection class
General specification
a)
Size
b)
Mass
c)
Color
128
Wall mount type
Electret condenser microphone
Hemisphere indirectivity
Radius of 3.5m
Supply from the RCU
Built-in speaker for self-diagnosis test
0.1m
0.1m
-25°C to +55°C (IEC60945 exposed type)
+40°C, 93% (without dew condensation)
2Hz to 13.2Hz ±1.0mm
13.2Hz to 100Hz 0.7G
IP56
126(w) x 86(d) x 111(h) mm
0.5kg
N7
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