In this case the information source provides an electrical signal to a transmitter comprising an electrical stage which drives an optical source to give modulation of the lightwave carrier.
在这种情况下，信源给发射机提供一个电信号，发射机中的电路驱动光源以实现对光载波的调制。
2
The front stage uses the single-voltage-mode control strategy and the back stage uses the three states discrete pulse modulation hysteresis current control strategy.
前级采用电压单环调制方式，后级采用三态滞环离散脉冲调制电流滞环跟踪控制技术。
3
The design and transmission calculate of the elastic support variable stiffness apparatus for frequency modulation tune for the structure of the vibration stage is introduce.