Grass Valley UniConfi NVISION Series v.2.1 - Manual (Page 45)

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UniConfig
User’s Guide
Reference Signals
A partition’s signal type determines the switching “rules” that the control card uses to make
routes. Signal types vary according to the router type.
Depending on the signal type, the control card might require reference signals to determine
when to perform the actual signal switch.
All NVISION series routers, regardless of format, have video reference and AES reference connec-
tions. For video references, SMPTE standards define where the switch should occur.
(For 525-line analog and SD video, the switch should occur at line 10. HD signals should be
switched at HD line 4. For AES references, the reference signal should have a sample rate of
48
kHz, locked to the video reference signal.)
Partition Type and Reference Type Cross-Reference
This table lists the signal type selection in the UniConfig menu and the required reference
signals.
Setting Up Partitions
How partitions are set up is determined by your router control system and the NVISION series
routers in use. Grass Valley’s NV9000 router control system uses the concept of levels
— virtual
and physical — to organize switching.
In many cases, it is necessary to create only a single partition for each router.
UniConfig presents different signal types for router partitions, depending on the router type. For
example, if you are configuring a video router, UniConfig presents only video signal types. It
does not allow you to choose, for example, an audio signal type for a video router. In contrast,
the NV5128 multi-format router allows switching of almost any signal type.
Standalone v. Expanded Routers
NVISION series routers are categorized as either stand-alone routers or expanded routers.
A stand-alone router consists of a single router frame. An expanded router consists of multiple
interconnected router frames. (Each frame contains one or two control cards.)
Partition Type Video Ref. AES Ref.
Analog Audio  
*
Mono AES, Analog Audio  
Sync AES, Analog Audio  
Async AES  
Digital Video 
Video, Asynchronous AES, Time Code** 
Machine Control Reverse, Machine Control Broadcast, Machine Control
Forward, Data X-Y
* If possible, connect an external 48.000 kHz AES reference signal.
** For the NV5128 and NV5100MC, video includes analog video (PAL or NTSC), SD, and HD.