1 About the Data Source
Data Source |
Program Number |
Mark |
HDMI HD Program |
9 |
Decoding from IRD CAM STB |
CVBS Program |
203 |
Decoding from IRD CAM STB |
FTA Program |
278 |
128 MPEG2 SD Program 150 H.264 SD program Total QPSK frequency 100 |
Encrypted Program |
10 |
4 MPEG2 SD Program 6 H.264 SD program Total QPSK frequency 4 |
2 Devices Involved
Data Source |
Function |
Mark |
|
NDS3218A HD Encoder & NDS3211P HD Encoder |
HDMI HD Program |
NDS3218A |
Input: 8 HDMI interface, 1 ASI Input Output: ASI and IP output |
NDS3211P |
Input: 1 HDMI Encoding (CVBS/YPbPr/SDI/S-Video Optional) Output: ASI and IP output |
||
NDS3208A SD Encoder |
CVBS SD Program |
Input: 8 CVBS Video and 8 audio, 1ASI input Output: ASI and IP output |
|
NDS3107 Tuner Mux |
FTA QPSK Program |
Input:6 tuner input and 2 ASI input Output: 2 ASI and 2 IP output |
|
NDS3975 HD IRD |
Encrypted QPSK Program |
Input:1 tuner input, 1 IP input and 1 ASI input Output: 2 ASI,1 IP and 1 channel A/V output |
|
DX328 IPQAM |
IP Convert to QAM |
Input: 256 IP from 1 GE port Output: 8 frequency and 8 IP output Support Multiplexer, Scrambler and QAM |
3 Devices Number Needed:
Data Source Part:
NDS3218A Number=9/8 = 1 Piece; NDS3211P Number = (9-8)/1=1 Piece
NDS3208A Number=203/8=25.38=26 Pieces
NDS3107 Number=100/6=16.67=17 Pieces
NDS3975 Number=4/1=4 Pieces
QAM output Part
By using 64QAM, 8 MHz, each frequency can transfer 38Mpbs.
Suppose the data input source bit rate is as following:
Format |
Bit rate |
Format |
Bit rate |
Format |
Bit rate |
HD H.264 |
8Mpbs |
SD H.264 |
2Mpbs |
SD MPEG2 |
3.5Mpbs |
The number of HD H.264 per frequency=38/8=4.75 =4 Programs/frequency
The frequency needed for HD H.264 program=9/4 = 2.3 frequency
The number of SD H.264 per frequency=38/2=19 Program per frequency
The frequency needed for SD H.264 program= (150+6)/19= 8.2 frequency
The number of SD MPEG2 per frequency=38/3.5=10 program per frequency
The frequency needed for SD MPEG2 program= (203+128+4) /10=33.5 frequency
The total output frequency=2.3+8.2+33.5=44 frequency
The total DX328 cards are needed=44/8=6 Cards
Hardware |
Device |
Piece |
NDS3218A HD Encoder |
1 |
|
NDS3211P HD Encoder |
1 |
|
NDS3208A SD Encoder |
26 |
|
NDS3107 Tuner Mux |
17 |
|
NDS3975 HD IRD |
4 |
|
DX328 IP QAM Card |
6 |
|
GE Switch |
2 (24 Port) |
|
Software |
CAS |
1 |
EPG |
1 |
|
SMS |
1 |
|
NMS |
1 |