| 摘要 |
PURPOSE:To shield a servo cable by arranging power cables in parallel in interposing the servo cable and forming a short-circuit ring including the power cable. CONSTITUTION:The servo cable 67 is a cable which transmits a servo read signal read out by a servo head 52 to a servo amplifier 63 and a high frequency signal is transmitted. The power cables 68 are cables which transmit a signal outputted by a power amplifier 66 and installed in parallel across the power cable 68 to connect a printed board to a carriage 40. Data cables 64 are provided adjacently to the cable 67 and an induced noise originating from a data write signal are generated. The cables 68 and a short-circuit ring of capacitors C1 and C2, however, are formed at the periphery of the cable 67, so no noise is induced in the servo read signal. In this constitution, the cables 68 are utilized to shield the cable 67, so there is no need for a dedicated shield wire. |
