EIS是数字电视前端的管理调度系统，完成产品管理、加扰器的调度、CAS的同密管理等功能。
EIS is to schedule and manage the front devices in DTV field, it can manage products, schedule scramblers, arrange CAS simulcrypt and so on.
加解扰的控制信息通过FSK调制后传送到用户端解扰器。
The controlling information is sent to the descrambler after being FSK modulated.
加解扰的控制信息通过FSK调制后传送到用户端解扰器。
The controlling information is sent to the descrambler after being FSK modulated.
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