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CM-1型盒式录音磁带综合测试仪近日由珠海华声实业(集团)公司和机电部三所联合研制成功,并通过技术鉴定。该仪器是按照国家标准《盒式录音磁带电性能与机械性能测量方法》(GB7310-87)第2条,对测量设备的要求而研制的,它除了包括有音频信号发生器(点频)、测量放大器、1/3倍频程带通滤波器和A计权网络外,还专门研制设计了可以自动测量磁带最大输出电平(MOL)的MOL自动测量电路和可以不用电平记录仪而直读磁带复印比的“复印比测量电路”,使检测速度大大提高。因而,本仪器与任何满足国标要求的录音座配合,即可方便地测量除短期均匀性之外的盒式录音磁带所有电性能指标,基本上可以取代通常由进口丹麦B&K公司的音频振荡器(如
CM-1 cassette tape recorder Tester recently by Zhuhai Huasheng Industrial (Group) Company and the Ministry of Electrical and three joint development of successful, and through technical appraisal. The instrument is in accordance with the national standard “Cassette tape electrical and mechanical properties measurement method” (GB7310-87) Article 2, the requirements of the measurement equipment developed, which in addition to including the audio signal generator (point frequency) Measurement amplifier, 1/3 octave band-pass filter and A-weighted network, but also specially developed and designed to automatically measure the maximum output level of the tape MOL (MOL) automatic measurement circuit and can not level recorder Direct-to-tape copy ratio of the “copy ratio measurement circuit”, the detection speed greatly improved. Therefore, the instrument can meet all the requirements of the national standard with the recording base, you can easily measure in addition to short-term uniformity outside of the cassette tape all the electrical performance indicators can basically replace the usually imported from Denmark B & K audio oscillator ( Such as