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Insert Masking Earpiece
Calibration method: With 2cc coupler compliant with
IEC 126
Transducers
Types and reference levels: DD45: ISO 389-1, Table 2
E-5A: ISO 389-2, Table 1
B-71: ISO 389-3, Table 1
Static headband force: Headphones: 4.5N
Bone vibrator: 5.4N
Bone vibrator calibrated: For mastoid placement
Sound attenuation
characteristics: ISO8253-1, Table 3
Airborne sound from bone
vibrator: See Br. J. Audiol. 1980, P73-75
Environmental
Operating temperature: +15°C to +35°C
Operating humidity: 30% to 90% (non-condensing)
Atmospheric pressure: 700 hPa to 1060 hPa
Input / Output
Power input: 2.5mm barrel-type socket
Mic inputs impedance: 2500 Ohms
Mic inputs connection: Mono 3.5mm Jack socket
Line input impedance: 6800 Ohms
Line in/out connection: Stereo 3.5mm Jack sockets
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