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产品规格：满足标准的ITU——P.57的建议
产品数量：100 个
包装说明：套件
关 键 词：通话计时宽带耳模拟器4185专为测量电话听筒上宽频带真实音响的负荷量而设计的。满足标准的ITU——P.57的建议
发布时间：2015-01-20
通话计时宽带耳模拟器4185专为测量电话听筒上宽频带真实音响的负荷量而设计的。满足标准的ITU——P.57的建议 用途： 1.适用所有使用4602B型电话测试头的电话 2.测量电话接收信息的真实性 . 用途 ? Development and conformance testing of all types of telephone handsets using Telephone Test Head Type 4602B ? Realistic measurement of telephone receive response 特点 ? Design based on ITU – T Rec. P.57, Type 3.2 low-leak and high-leak simplified pinna simulators ? Includes IEC 60318-4 coupler with 1/2" microphone and preamplifier ? Conforms to IEC 60318-4 (2010) and ITU-T P.57 Type 3.2 ? Individual calibration according to ITU – T P.57. Supplied with acoustic impedance and frequency sensitivity response measurements The two grades of well-defined leakage make it possible to simulate the average real ear loss for telephone handsets which are held either comfortably tight (low-leak pinna) or loosely (high-leak pinna) against the human ear. The ear simulator is recommended for measurements on supra-aural and supra-concha earphones, both sealed and unsealed, practically covering all kinds of earphone design. The ear simulator can be used for wideband telephonometry in the frequency range 100 Hz to 8 kHz.
