Thor 4-Channel HDMI to QAM Modulator and IPTV Streaming Encoder with Low Latency - Manual (Page 37)

HDMI/SDI-QAM-IPLL
Thor Fiber Tel: (800) 521-84 Email: [email protected] https://thorbroadcast.com/ http://www.thormodulators.com/
Virtual Channels
In order to create RF QAM Channels without decimal points, or in order to create a virtual channel, Thor Broadcast
has a VCT menu option to create such results in your RF QAM Distribution.
Since you can only modulate in a direct linear format; such as using channel 10, 11, 12, 13… VCT
Some headend’s require a digital remap, some cable companies require different frequencies than channel
numbers, and for adding a unit to an existing headend this VCT makes it easy to add any number of channels by
using any open frequencies in the RF spectrum and assign simpler format visual channel numbers on your TV set.
EXAMPLE : Suppose you are installing a 4HDMI unit on an existing rack, the client needs to add channels 32, 33, 34,
and 7. Frequencies 273, 279, & 285 are clear so adding channels 32, 33, 34 is simple, however in order to add
channel 7 we must create a frequency inline for channel 35 (291mhz) and remap to VCT for channel #7 or
frequency 177.