Artel DigiLink DLC170, Установка и эксплуатация

Страница: 14 / 50

4 DLC170 Function Modules Installation and Operations Manual
DLC170 Function Modules
DLC170AD Functional Description
This sections provides a functional description of the DLC170AD, including the functional block diagram
shown in Figure 1 .
Figure 1. DLC170AD Module Functional Block Diagram
This sections includes the following topics:
• Signal Paths (page 4)
• Video Input (page 5)
• Audio Input (page 5)
• Electrical Output (page 5)
• Optical Output (page 5)
Signal Paths
The DLC170AD receives an electrical composite analog video signal (either NTSC or PAL), which it converts to
component digital video and then formats it into SDI (SMPTE 259M). The DLC170AD also receives four
balanced analog audio signals and converts them into two AES-3 digital audio signals that it embeds into the
SDI digital video. The SFP module on the DLC170AD converts the resulting digital video signal to an optical
video signal.
In addition to providing the optical SDI signal, the DLC170AD output is available to other cards in the host
chassis. For example, you could use the output of the DLC170AD as one of the inputs to a DLC274M
multiplexer (see the DLC274 Function Module Installation and Operations Manual ).