Specifications

Chapter 5: Additional Operational Information 69
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 timecode
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 3 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 black-
burst or color bars, along with internally gener-
ated time addresses for VITC (and/or LTC,
and/or CG dub window). In Figure 3 on page 70,
this scenario is identical to “Route A.”
Video In For all other combinations of Clock
Reference and Positional Reference, VITC and
character generator functions are applied to the
video signal arriving at the Video In connector.
In this way, the SYNC peripheral can read VITC
from your videotape, or add VITC with or with-
out character generation (window burn) while
dubbing to a second VCR. In Figure 3 on
page 70, this scenario is identical to “Route B.”