首次使用「模组7500」前，请先用电源线将机组接上110或220伏交流电（110/220VAC）或12伏直流电（12VDC）的电源插座，再将电池组充电约四小时。
Before using the Model 7500 for the first time, charge the battery pack for about four hours by plugging the unit into a 110/220VAC or 12VDC outlet using the power cord.
关闭与计算机连接的所有外设的电源。关闭计算机并断开交流电源线。
Turn off all peripheral devices connected to the computer. Turn off the computer and disconnect the AC power cord.
尤其可以为电源线(PL)供应除相移之外都相同的交流电信号。
The power lines (pl) may particularly be supplied with alternating electrical signals that are identical besides a phase shift.
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