Grass Valley UniConfi NVISION Series v.2.1 - Manual (Page 59)

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Switch Point Settings
Chapter 7 discusses UniConfig’s ‘Switch Point Setup’ Window.
Topics
Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
The Switch Point Setup Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
About Video Signal Fields and Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Setting Switching Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Background
A “switch point” is a point in time at which an output is switched from its current source to a new
source. Different video and audio formats require different switch points. UniConfig’s ‘Switch
Point Setup’ window lets you set switch point parameters for individual outputs.
All the NVISION series routers have video and audio reference signals connections.
For video reference signals, there are two connectors labeled ‘VIDEO REF’. The video reference
connectors can use the same signal or different signals.
For audio reference signals, there are two connections labeled ‘AES REF’. One or both connec-
tions are connected to a stable AES source at 48
kHz. If both AES reference are connected, one
acts as a backup should the other AES reference source fail.
This section discusses how to make switch point settings for routers. For information on setting
up EC9535 GSC Node Bus Converter switch points, see
Setting Up EC9535 Switch Points on
page 97.
Redundant v. Dual Video Reference
Each router has two video reference connectors. You can apply the same reference signal at
both connectors or use a different reference at each connector. When you apply the same
signal, the router has a “redundant” reference. If one reference fails, the control card automati-
cally switches to the other reference.
If you use different references, the router has a “dual” reference. Router outputs can be config-
ured to occur using one or the other reference. For example, you might connect an NTSC
reference at ‘Ref1’ and a PAL reference at ‘Ref2’.
Note
In UniConfig, all routers have a ‘Switch Point Setup’ window except the NV5256. The
NV5256 routes machine control signals, which do not require a switch point.
The ‘Switch Point Setup’ page does not control the actual point in time at which an
output switches. For that you need special equipment.