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Calibration Microfoon of the OtoCube
Standard
|
Model |
MPA416 |
|
Optimized |
Free Field |
|
Diameter |
1/4″ |
|
Standards |
IEC Class-1 |
|
Frequency Response (Hz) |
20 ~ 20k |
|
Open-circuit Sensitivity (mV/Pa) (±2dB) |
50 |
|
Dynamic Range (dBA) |
29~ 127 |
|
Inherent Noise (dBA) |
< 29 |
|
Venting |
Rear |
|
Operating Temperature Range (℃) |
-10 ~ 50 |
|
Operating Humidity Range (RH) |
0 ~ 95% |
|
(Without Condensed Water) |
|
| Supply Power |
ICCP 2-20mA |
|
Equivalent Air Volume (250 Hz) (mm3) |
- |
|
Temperature Coefficient (dB/℃) |
15-35C |
|
Humidity Coefficient (dB/%RH) |
20%-90% |
|
Pressure Coefficient (250 Hz) (dB/kPa) |
-0.06 |
|
Dimensions |
IEC-61672 Class-1 |
|
Screw Thread |
M11.7 – 60UNS |
Specifications of the MPA416 microphone
The microphone has a linear response. The correction for Free Field to Random Incidence is made in the calibration software of the OtoCube.
Optional the OtoCube can be deliverd with 1/2 ince MP281 microphone with random-incidence (ANSI Type 1, IEC 1094-4 Type WS2). This microfphone needs a preamplifier.
|
Model |
MA221 |
|
Diameter |
1/2 inch |
|
Frequency Response (Ref: 250 Hz, ±0.2 dB) |
20 Hz ~ 200 kHz |
|
Attenuation (10 Hz ~ 100 kHz) |
< 0.5 dB |
|
Input Impedance |
> 5 GW |
|
Output Impedance |
< 110 W |
|
Electrical Noise |
A-weighting < 2.0 μV |
|
20 Hz ~ 20 kHz < 6.0 μV |
|
|
Max Output Voltage |
4.5 Vrms |
|
Power Requirement |
ICCP (2 ~ 20 mA) |
|
Operating Temperature |
-20°C ~ 80°C |
|
Operating Humidity |
0 ~ 98% RH |
|
Length |
36 mm |
|
Output Connector |
SMB |
|
Thread for Microphone |
Φ11.7 mm x 60 UNS |
Specifications for the matching preamplifier MA221