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1 About Data Source
|
Data Source |
Program Number |
Mark |
|
CVBS Program |
40 |
40 program from local |
2 Device Involved
|
Data Source |
Function |
Mark |
|
NDS3208A SD Encoder |
CVBS SD Program |
Input: 8 CVBS Video and 8 audio, 1ASI Output: ASI and IP output Support MPEG2 Encoding |
|
NDS3712 Multiplexer |
ASI Signal Distribution |
Input:8 ASI Input Output: 2 ASI and 2 IP output Support Multiplexer and Scrambler Function |
|
NDS3401A QPSK Modulator |
ASI Convert to QPSK |
Input: ASI Output: QPSK Modulation |
|
NDS2527 Transmitter |
Wireless Transmission |
|
3 Device Number Count:
QPSK output Part
Suppose each frequency can transfer 38Mpbs. And each SD MPEG2 program take 3.5Mpbs.
The number of SD MPEG2 per frequency=38/3.5=10.85=10 Program
The frequency needed for SD MPEG2 program=40/10=4 frequency
Data Source Part
NDS3208A Number=40/8=5 Piece
Total Device Number:
|
Hardware |
Device |
Piece |
|
NDS3208A |
5 |
|
|
NDS3712A |
2 |
|
|
NDS3401A |
4 |
|
|
NDS2527 Transmitter |
1 |
|
|
Software |
CAS |
1 |
|
EPG |
1 |
|
|
SMS |
1 |
|
|
NMS |
1 |
