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一、前言测试带(IEC 称为校准带)和基准带是磁记录技术中的两个重要计量工具。测试带是录有规定特性信号,用来调整录放设备重放通道的已录磁带;基准带是用来衡量电特性的未录空白磁带。它们都是以参考磁平作为基准,并用“短路带磁通”来定值。所谓参考磁平是衡量磁带上已录信号强弱的量。
I. Introduction Test strips (IEC called calibration strips) and reference strips are two important metrology tools in magnetic recording technology. The test tape is a recorded tape with the specified characteristic signal for adjusting the playback path of the recording and reproducing apparatus. The reference tape is an unrecorded tape used to measure electrical characteristics. They are based on the reference magnetic level as a benchmark, and “short circuit flux” to set values. The so-called reference magnetic level is a measure of the amount of recorded signal strength tape.