DigiDesign SYNC HD, Руководство пользователя

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Chapter 5: Additional Operational Information 67
Factory Default Settings
The following table lists the default settings of
each parameter.
Managing and Selecting Video
Inputs
(SD Video Rates Only)
The SYNC HD has two independent video in-
puts, “Video In” and “Video Ref In,” on the
SYNC HD rear panel. These let you use one of
the video inputs as a Clock Reference (the re-
solver 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 HD 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 67.
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 HD Video Ref input.
You will then connect the VCR's video output to
the SYNC HD Video In port. Finally, the
SYNC HD 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 68.
SYNC HD Defaults
Parameter Name Default
Set Generator Start Time
01:00:00:00
Digital Reference
AES/EBU
Sample Freq (Rate)
44.1 kHz
VITC Insertion
On
Pull Rates
Off
Base Clock
Session (1x Word)
(VITC) Reader Line
All
(VITC) Generate Line
14–16
Window Burn On/Off
On (Enabled)
Freewheel Duration
8 frames
LTC Output level
+3 dBu
Servo gain
0000
Pitch Hold
Off
Bi-Phase Pulse-per-frame
0100
Bi-Phase Signal
A Lead B
Video System/Format
NTSC
Idle MTC Enabled
On
Window Burn options:
Enabled
Size: Large
Vertical Position: 20%
from Bottom
Horizontal Position: Center
Color: White on Black
background
Variable Speed Offset
(VSO)
Off