Model 5601MSC
Model 5601MSC Master SPG/Master Clock System
OPERATION
Revision 2.2
Page - 27
2.2.8. NTSC Genlock with Ten-field Reference
Figure 2-8: Lock Diagram #2 - NTSC Reference with Ten-field Reference
When an NTSC reference is applied that carries a ten-field reference pulse in the vertical blanking
interval (VBI) as specified in SMPTE ST 318, the phase locking ability of the 5601MSC is enhanced.
The ten-field reference provides 5 frames worth of phasing information that allows deterministic locking
of 23.98Hz standards, the 6/1.001Hz pulse, and DARS/AES signals. These outputs can be guaranteed
to be the same phase between multiple units. The color frame sequence of the NTSC reference is also
decoded and used for phasing NTSC sync outputs. Note that the lock diagram above (Figure 2-8) now
shows a span of 5 frames instead of 2 frames for regular NTSC lock (Figure 2-7).
Содержание 5601MSC
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