| 摘要 |
PURPOSE:To avoid occurrence of an error, by securing a simple constitution of the generator of optional amplitude property with use of the tape leader, the cosine function generator, the memory, the integrator and others and at the same time reusing the cut-off component. CONSTITUTION:The transversal filter 200 is connected to the tap weight generator 1 of the transversal filter; and the tape leader 10, the cosine function generator 13, the memories 12, 19 and 20, the integrator 17 and others are provided to the generator 1. Then the cosine of the property of the transmission line is obtained by calculation from the data about the amplitude frequency property of the transmission line which is obtained in a discrete way at the local circuit. This property obtained by the generator 1 is applied several delay elements of serial connection which equalize the local lines, the potentiometers connected to each joint of the delay elements as well as the output of the final delay element, and the transversal filter 200 which gives an addition to the outputs of the potentiometers and then delivers the equalization output. Thus the weighting is given to the potentiometers, and the occurrence of an error can be avoided by the reuse of the cut-off component. |
