The parameter of the modulator from tsplayer is as below
1. Bandwidth: 2, 3,4,5,6,7,8 MHZ
~~DVB-T standard is 6MHZ
2. Frequency (khz): 45~1001 MHZ
~~ it is about 159ch @ 6MHZ bandwidth.
~~ you can choice what channel you want to modulate!
3.Code rate: 1/2, 2/3,3/4,5/6, 7/8
~~the modulator data rate will bigger if the number is big.
4.constellation: QPSK, QAM16, QAM32.
~~ modulator data rate : QAM32>QAM16>QPSK
~~the distance of transmitted signal: QPSK> QAM16>QAM32
5.Guard interval : 1/4, 1/8, 1/16, 1/32
~~ modulator date rate: 1/32>1/16>1/8>1/4
6. modulator output data rate & TS file input data rate
~~ modulator output data rate> TS file input data rate
~~ modulator output date rate is almost the same TS file input data rate.
The modulator date rate number is as below.
We will suggest you the parameter if you transmit " 1080i", "720p" and "480i"
1. 1920x1080i NTSC 29.97fps / 1920x1080i PAL 25 fps
if you follow our suggestion parameter that I inform you the video convert, the parmeter is as below.
case1: QAM64
the video bite rate (TS file input data rate) is 12597000.
code rate:2/3
constellation:QAM64
Guard interval: 1/16
Case2:QAM16
the video bite rate (TS file input data rate) is 12597000.
code rate:3/4
constellation:QAM16
Guard interval: 1/16
2.1280x720 (720p) NTSC 29.97fps /1280X720 PAL 25fps
if you follow our suggestion parameter that I inform you the video convert, the parmeter is as below.
the video bite rate (TS file input data rate) is 18509000.
code rate:2/3
constellation:QAM16
Guard interval: 1/4
3.MPEG-2-HDV1-480i 4x3 NTSC /MPEG-2-HDV1-576i 4x3 PAL
if you follow our suggestion parameter that I inform you the video convert, the parmeter is as below.
the video bite rate (TS file input data rate) is 18509000.
code rate:2/3
constellation:QAM16
Guard interval: 1/4
(2).jpg)
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