IEC60711 Ear simulator coupler OAE-262 Onsoku

This unit is occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts.
This ear simulator is designed to comply with IEC-60318-4 (IEC60711) standard.
This unit incorporates the OMC-58, 1/2-inch sound pressure type condenser microphone.
Preamplifier is an option.

Standard :IEC-60318-4 (IEC60711)
Model :Microphone Model OMC-58(sound pressure)
:Ear simulator coupler Model OAE-260(OMC-58 included)
:Optional unit L type preamplifiers(Model AP-1263)
Preamplifiers(Model OAE-260P)
Frequency response :20-10kHz
Capacity :1.28cm3 +-0.03cm3
Sound pres. Sensitivity :-38db/Pa 12.6mV(With preamplifiers)
Microphone dimensions :1/2inch dia.13.2 X 12.6
Coupler dimensions :dia.23.77 X 23 (Projection 20)
Impedance measuring range :30-150db
L type preamplifiers dimensions :Model AP-1263 24(W) X 15(H) X 100(D) Optional unit
Preamplifiers dimensions:110.4(W) X 59(H) Optional unit
The connector currently used :Tajimi Type PRC03-12A10-7M
(Microphone voltage +200V, Preamplifiers voltage +28V)