Grass Valley MRC v.1.2 - Manual (Page 154)

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Tutorials
Levels
audio is AES3id (AES for short). There are several different digital video formats and two analog
video formats. Video signals might or might not also carry audio signals. Audio carried in a
digital video signal is called embedded audio. Digital video can embed (carry) up to 16 individual
AES audio channels.
Analog signals are not directly compatible with digital signals, but devices that convert one to
the other are available.
The different digital formats are also not compatible, but Miranda’s HD routers can also route SD
signals and its 3Gig routers can also route HD and SD signals. Some video monitors recognize
several different formats and adjust to display the format they receive.
AES signals are usually numbered as stereo pairs.
Available Signal Types
MRC supports a wide range of signal types. But, for any router type, only certain signal types can
be configured. Only those signal types that can be switched by the router appear in MRC’s
‘Router Levels’ page during configuration.
You can also select crosspoint matrices, by signal type, in the ‘Crosspoints’ page.
The fundamental signal types are AES, timecode, digital video, analog video, analog audio, and
machine control.
The fundamental signal types have been mapped into several physical level types, whose
names are listed here:
2
The meaning of these physical level aggregates can be found in the documentation for the
router you are configuring.
Levels
Physical levels are partitions used to organize switching within a router. Certain routers (such as
the NV5128 or NV8576) can switch signals of different types. A router switches signals within a
level, never between levels. Inputs can be routed to outputs only in the same level.
A level can encompass either a portion of a switching matrix or the entire switching matrix.
Levels may overlap.
Video, Async AES, Timecode
Sync AES Stereo, Analog Audio
Sync AES Mono, Analog Audio
Asynchronous AES
Analog Audio or Timecode
Analog Video or Timecode
3Gig, HD or SD Digital Video
Synchronous Audio
Digital Video
Synchronous Stereo Audio
HD Digital Video
SD Digital Video
Machine Control Reverse
Machine Control Broadcast
Machine Control Forward
Output Follow
Data X/Y Switching
Monitor
Analog Audio
2. “Audio Follows Video” was a physical level choice for NV8500 hybrid routers. It is no longer available be-
cause its functions have been made available through other means. It is possible that some routers in
the field still have this physical level type.