Specifications

Model DP579 Dolby Tri-Level Sync Interface
5
2.2.2 Input
Two female BNC connectors on the rear panel are provided for video
reference input with a loop-through output. It is important that the
video reference signal is terminated correctly. A 75Ω terminator is
supplied in the DP579 packing kit for this purpose.
2.2.3 Dolby Black
Two female BNC connectors on the rear panel provide electrically
independent Dolby Black signals on Output 1 and Output 2.
2.3 Installation
Figure 4 shows an example of a DP579 installation.
Video Ref
DP571 Dolby E Encoder
Output 2
Output 1
Dolby Black
Input
DP579
Plant video reference
loop-through or
terminate
Video Ref
DP572 Dolby E Decoder
Figure 4 DP579 Wiring Example
The DP579 input is connected to the local plant video reference, while
the outputs are connected to the DP571 and DP572 Dolby E Encoder
and Decoder. It is important to correctly terminate both the input
reference signal and the two output signals. If one of the outputs is not
used, however, it is not necessary to terminate the unused connection,
as each signal is isolated.
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