Managing And Selecting Video Inputs - DigiDesign SYNC HD Manual

Managing and Selecting Video
Inputs
(SD Video Rates Only)
SYNC peripherals have two independent video
inputs, "Video In" and "Video Ref," on the
SYNC peripheral rear panel. These let you use
one of the video inputs as a Clock Reference (the
resolver sample clock master reference) and use
the other input for working with VITC time
code and the character generator (window dub).
If you have just a single video source, the SYNC
peripheral provides a very simple method for
connecting your single video source to both of
the video inputs. See "Using Video Inputs with
VITC and the Character Generator" on page 69.
In a typical video setup, you will supply a refer-
ence video signal (black burst or color bars) to
your VCR and to the SYNC peripheral Video Ref
input. You will then connect the VCR's video
output to the SYNC peripheral Video In port. Fi-
nally, the SYNC peripheral Video Out will be fed
to your picture monitor and/or another VCR.
Using Video Inputs with VITC and the Character
Generator
Unlike selecting a video input to use for Clock
Reference, input selection for VITC and charac-
ter generator functions follows a simple rule.
This rule is explained in the following sections
and in Figure 1 on page 70.
Video Ref If the Clock Reference is one of the
two video inputs, and the Positional Reference is
Generate, then VITC and character generator
functions are applied to the video arriving at the
Video Ref input connector. This helps you avoid
re-patching video cables whenever you want to
stripe a videotape with your reference blackburst
or color bars, along with internally generated
time addresses for VITC (and/or LTC, and/or CG
dub window). In Figure 1 on page 70, this sce-
nario is identical to "Route A."
Chapter 5: Additional Operational Information 69