CHAPTER 3: FIELD APPLICATIONS
3-6
DigiVu
®
Series Multichannel MPEG-2/H.264 Encoder/Multiplexer with QAM &/or IP Output - Installation & Operation Manual
3.7 Local Content Back Haul Over IP
DigiVu systems may be used for IP back haul where there is a source of video at a point in the plant such as a remote studio
or special program origination location and the video is needed at a hub for reinsertion into the plant. There are two main
applications as illustrated in
1. Fiber Back Haul
This provides guaranteed signal quality, link speed and bandwidth. In this case, a single mode SFP may be used to
transport the IP stream on the fiber.
2. DOCSIS modem Back Haul
Not always possible to guarantee link speed and bandwidth which could vary, therefore encoded signal quality must
be lower due to lower upstream bandwidth. In this case a DOCSIS modem with high rate upload speed is used to
transmit the video over IP to the hub, where it is re-inserted.
Figure 3-6:
Local Content Back Haul Over IP