Dolby Laboratories DP579, User Manual

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Model DP579 Dolby Tri-Level Sync Interface
7
3 Operation
The DP579 converts a tri-level video reference at its input into Dolby
Black, while preserving the input frame rate. No user intervention is
required. Table 1 summarizes the picture formats and the corresponding
frame rates that the DP579 will accept and support. SMPTE 274M
specifies these formats in detail.
If an analog composite NTSC (29.97 fps) or PAL (25 fps, or ‘slow’
PAL at 24 fps) video signal is detected, the DP579 will enter Bypass
mode, and the signal is passed straight through to the output
connectors. Any other type of signal (e.g., AES/EBU, LTC, etc.) will
force the DP579 outputs to 0 V.
Table 1 Supported Input Scanning Rates
Input Format
Frame Rate
(fps)
Scan Lines
1
1920 × 1080/60/2:1 30 i 1125
2
1920 × 1080/59.94/2:1 29.97 i 1125
3
1920 × 1080/50/2:1 25 i 1125
4
1920 × 1080/48/2:1 24 i 1125
5
1920 × 1080/47.95/2:1 23.98 i 1125
6
1920 × 1080/30/1:1 30 P 1125
7
1920 × 1080/29.97/1:1 29.97 P 1125
8
1920 × 1080/25/1:1 25 P 1125
9
1920 × 1080/24/1:1 24 P 1125
10 1920 × 1080/23.98/1:1
23.98 P 1125
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