Analog Channel Insertion Vs Digital Channel Insertion - ATX DigiVu Installation & Operation Manual

CHAPTER 3: FIELD APPLICATIONS
3.3

Analog Channel Insertion vs Digital Channel Insertion

Old Way – Analog System
One Channel contains one Program
One channel is deleted
A new program is modulated and reinserted
All channels can be tuned by an Analog TV Tuner
1 PROGRAM
ANALOG CHANNEL
ANALOG
CHANNEL
CABLE TV IN
New Way – All Digital System
One Channel can typically contain up to 10 programs
One channel is deleted
Any number of programs within that channel can be "dropped"
One to Four new programs can be "added", modulated and inserted
The new channel can only be tuned with a Digital Set-Top Box
DIGITAL CHANNEL
All original channels before
the Channel Deletion Filter
DIGITAL
CHANNEL
CABLE TV IN
NEW
PROGRAM 1
NEW
PROGRAM 2
3-2 DigiVu
1 PROGRAM
ANALOG CHANNEL ANALOG CHANNEL
All original channels minus
All original channels before one channel after the Channel
the Channel Deletion Filter
1 1 1 1
PROGRAM PROGRAM PROGRAM PROGRAM
ANALOG ANALOG ANALOG
CHANNEL CHANNEL CHANNEL
CHANNEL DELETION FILTER
NEW
AUDIO
CHANNEL
SOURCE
VIDEO
MATERIAL
PROGRAMS
DIGITAL CHANNEL DIGITAL CHANNEL
All original channels minus
one channel after the Channel
PROGRAMS
DIGITAL
DIGITAL CHANNEL CHANNEL DIGITAL CHANNEL
CHANNEL DELETION FILTER
DEMODULATOR
ORIGINAL
PROGRAMS
MULTIPLEXER
DROPPED
PROGRAMS
ENCODER
NEW
PROGRAMS
Figure 3-1: Analog Channel Insertion vs Digital Channel Insertion
Series Multichannel MPEG-2/H.264 Encoder/Multiplexer with QAM &/or IP Output - Installation & Operation Manual
®
1 PROGRAM
ANALOG
All original channels plus new
channels after the directional
Deletion Filter coupler
1 1
PROGRAM PROGRAM
DELETED
CHANNEL
ANALOG ANALOG ANALOG
CHANNEL CHANNEL CHANNEL
DIRECTIONAL
COUPLER
NEW
PROGRAM
ANALOG
CHANNEL
MODULATOR
DIGITAL
SET-TOP
BOX
All original channels plus new
channel and added programs
Deletion Filter after the directional coupler
DELETED CHANNEL
NEW AND OLD
DIGITAL
DIGITAL CHANNEL CHANNEL
DIGITAL CHANNEL
DIRECTIONAL
COUPLER
NEW AND OLD PROGRAMS
MODULATOR
NEW AND OLD
PROGRAMS
DVISm
TV
NEW 1
PROGRAM PROGRAM
ANALOG
CHANNEL
CABLE TV OUT
TV
DIGITAL
PROGRAMS
CHANNEL
CABLE TV OUT