Thor 1-4 HDMI to ATSC Modulators 8VSB - Manual (Page 26)

H-4HDMI-ATSC-IP
Click “Add” to add more boxes for filling the Input & Output PIDs, then click
“Apply” to confirm.
VCT (Virtual Channel Table) Setting
Click “NIT” from the menu to trigger the screen as Figure-6. Then click “Add” from
this screen to add the program descriptor in VCT.
Figure-6
Select the carrier output channel for the inserted VCT.
Click “Add” from this page, it will display the screen as Figure-7 where it
requires to add Channel TSID and configure other parameters for the programs.