Analogue Scrambling System
Outline
The data controller located at the front end of the system generates digital signal via its microprocessor and send scrambling order to scrambler. The terminal descrambler descrambles after receiving proper descrambling data and fee-controlling data. The system is succeed in signal-descrambling and image restoration, and it is widely used in the full channel scrambling as well as partial channel scrambling of CATV.
Chengdu Jiexun adopts unique and advanced combination technology based on radio frequency in the front. Group descrambling technology is adopted in the terminal. Integrated with digital technology, analog technology, radio frequency and communication technology, the scrambling system makes it be the most advanced one among similar products at present.
Specifications
Item Parameter Unit
Input voltage AC220?20% V
Power <15 W
Work temperature 0～40 ℃
Weight 4 Kg
Input TV signal level 72～82 dBuv
Gain 3 dB
Analogue TV signal work bandwidth 550 MHz
Digital TV signal work bandwidth 750 MHz
Flatness ?1.5 dB
System capacity 30000 Set(user)
Computer offline user capacity 7999 set
Entitlement capacity to scrambler by one time 4000 set
Entitlement speed (when 1000 users) 480 Set/minute
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