FMUSER INTERNATIONAL GROUP INC.
广州市汉婷生物技术开发有限公司
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4.2.2.2 Modulate Mode
Press “Modulate Mode” to enter the interface to select one
modulate standard according to the content displayed. As the
FUTV4440B modulator supports J.83A/DVB-C, J.83B, and
J.83C standard, the display shows as below:
4.2.2.3 Constellation
Press “Constellation” to enter the QAM modulation mode
selection, ENTER to the specified setting. The display shows as
below:
There possible options are different according to the different
modulate standard set in 1.2. (J.83A/DVB-C: 16QAM, 32QAM,
64QAM, 128QAM and 256QAM; J.83B: 64QAM and 256QAM;
J.83C: 64QAM and 256QAM). User can press ENTER and move
UP/DOWN key to choose the constellation as needed, and then
repress ENETER after modification to confirm.
Note: The more advanced QAM constellation mode, the higher
transmission efficiency and TS coding rate which the device can
1.3.1 Constellation J.83A/DVB-C
64QAM
1.2.1 Modulate Standard
[ J.83A/DVB-C ] J.83B J.83C
This is the modulate mode selected in menu 1.2.
It displays different content according to the mode
selected in menu 1.2.
