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5.4
Channel Lineup
Determine the RF and TV channel line-ups. If possible start RF channel lineup at ch 23 (super-
band). This will eliminate possible signal ingress from VHF broadcast signals and keep the
property signal out of the aeronautical frequencies in the 126 – 134 MHz range. Set the RF
channel outputs on the QAM tab of the COM2000 web interface.
The COM2000 can modulate up to three high definition programs on one 6MHz QAM channel. It
is a best practice not to combine higher bandwidth local, sports and premium channels on the same
QAM channel.
Determine in advance what networks the customer will require on the system and the channel
assignments for each.
5.5
External Video Sources
The COM2000 can modulate video sources from multiple sources. Each source needs to be an
MPEG2 single transport IP stream and will require a QAM output channel assignment. Care
should be taken in combining multiple digital video sources. In some cases placing non Pro:Idiom
programing adjacent to Pro:Idiom programming in the channel ring could cause Pro:Idiom key
loss due to Packet Identifier (PID) overlap. See Section 15 for more information on avoiding
Pro:Idiom key loss.
5.6
TV Compatibility
The Technicolor COM2000 system outputs a MPEG2 transport stream containing the original
encoded video stream as available from DIRECTV. For HD this format is MPEG4 (H.264) with
AC3 audio; for SD, the format is MPEG2 with MPEG1 Layer II audio; and for UltraHD video, the
format will be H.265. Any HD format will include an encryption scheme such as Pro:Idiom,
Verimatrix or Samsung LYNK unless authorized by DIRECTV to operate in the clear. All TVs on
the property must be capable of receiving and decrypting MPEG4 encrypted signal. If using
standard definition programming without encryption, some residential TVs will not process the
MPEG2 audio. If you are building a system for standard definition with residential TVs an Audio
Transcoder will be required to provide AC3 audio.
It is highly recommended that the make and model of all TVs be recorded before starting the
installation. Verify that all models compatible (for high definition systems).
Research and familiarize yourself with any required programming procedures.
Non-compatible TVs can be used with the Technicolor DCI401MCS set back box. (available Q4
2015)