在数字磁记录读出信道中,采用脉冲压缩方法是减少脉冲拥挤、提高位密度和可靠性的一种有效技术途径。鉴于数字磁记录系统的实际读出脉冲总是或多或少地存在不对称性,故本文对一种既能适应对称读出脉冲、又能适应不对称读出脉冲的无反射型会弦均衡器进行了分析研究,介绍了它的设计考虑和调整方法,并给出了它在磁盘上的试验数据。结果表明,在读出脉冲不对称时,它能获得比反射型余弦均衡器更好的均衡效果。 In the digital magnetic readout channel, the use of pulse compression method is to reduce pulse crowding, improve bit density and reliability of an effective technical way. In view of the fact that the actual read-out pulse of the digital magnetic recording system always has more or less asymmetry, a non-reflection type string-balanced that can adapt to symmetrical read-out pulse and asymmetrical read- This paper analyzes the research, introduces its design considerations and adjustment methods, and gives its experimental data on the disk. The results show that it achieves better equalization than the reflective cosine equalizer when readout pulses are asymmetric.