모 델 명
Source(dB)
Calibration Frequency
Remark
Acoustic Calibrator CR:510 series94
at 1kHz, IEC 60942:2003
Class 2(정밀)
94
at 1kHz, IEC 60942:2003
Class 1
AS-NC-72
104 & 94
at 1kHz, IEC:942
보통급,1/2"전용
|
Acoustic Calibrator(소음교정기) 영국 Cirrus Research 社 |
|
모 델 명 |
Source(dB) |
Calibration Frequency |
Remark |
|
Acoustic Calibrator CR:510 series |
|||
|
94 |
at 1kHz, IEC 60942:2003 |
Class 2(정밀) |
|
|
94 |
at 1kHz, IEC 60942:2003 |
Class 1 |
|
| Pistonphone | |||
|
|
104 & 94 |
at 1kHz, IEC:942 |
보통급,1/2"전용 |