Thor 1- 4 HDMI to QAM Modulators - Manual (Page 18)

H-4SDI-or-4HDMI-QAM-IP
As the H-4SDI-(4HDMI)-QAM-IP (DVB-C Modulating) is with 4 carrier outputs,
“3.1”-“3.4” represent the “Carrier A”, “Carrier B”, “Carrier B”, and “Carrier D”
respectively. User can enter “3.1”/“3.2”/“3.4”/“3.4” to set the corresponding modulating
parameters. Submenus (taking “3.1” as an example) are as below:
 Standard
There are three possible options provided for selecting Standard: J.83A (DVB-C), J.83B,
J.83C when the display shows them, user just need swift LEFT and RIGHT key to choose.
 Constellation
Three different constellations: J.83A (DVB-C), J.83B, J.83C will show on the LCD
window when Constellation been entered.
J.83A (DVB-C) contains 16QAM, 32QAM, 64QAM, 128QAM, and 256QAM;
J.83B contains 64QAM, 256QAM;
J.83C contains 64QAM, 256QAM.
16QAM: Quadrature Amplitude Modulation is 16
32 QAM: Quadrature Amplitude Modulation is 32
64QAM: Quadrature Amplitude Modulation is 64
128QAM: Quadrature Amplitude Modulation is 128
256QAM: Quadrature Amplitude Modulation is 256
3.1 Output A
3.1.1 Standard
3.1.2 Constellation
3.1.5 RF Out Level
3.1.6 RF On
3.1.3 Symbol Rate
3.1.4 RF Frequency