2-102
Section 2 — Installation
Switcher
reference
0
Switcher
sync generator
set to FFF
-1 line
Switcher
reference
0
4000-3 Switcher Autotime Window
-8 us
Switcher
sync generator
set to 800
-1 line
5 us
Switcher
reference
and
analog inputs
0
-13 us
13 us
Switcher
sync generator
set to 6ED
Switcher
reference
0
-46 us
Switcher
sync generator
set to 000
-1 line
-1 line
analog inputs
18 us
4000-3 Switcher Autotime Window
1 -The absolute dimensions of the digital input autotiming window is dependent upon the output and the path
selected through the switcher.
The autotiming windows shown represent the composite worst case of all outputs and paths.
Various outputs and paths may have larger autotiming windows than shown.
2 - Switcher digital output timings represent all outputs including *timed* aux bus outputs 5A - 8B.
The only exceptions are: Untimed aux bus outputs 5A - 9B These output less than 1 us. after the video
enters the primary input.
Framestore video & key - these output 10 us before program output.
3 - There are two types of optional analog inputs. Up to 16 analog primary inputs are applied to the
main switch matrix and can be used on any bus similar to the serial digital inputs. Up to 6 external
analog chroma key inputs are applied to the chroma keyers for external chroma keys. Neither of
these inputs are auto timed. Both types must be timed externally to arrive at the switcher at the time
labeled "analog inputs" on the above timelines. The analog inputs must be in time with the switcher reference
when the sync generator is set to 6ED.
There is an external chroma key timing adjustment in the menu system. This is intended for artistic use or
to compensate for *minor* external timing errors. This control can position the chroma key hole cutter
approxi- 20 us. However, the external analog chroma key inputs must arrive within -0.5 us to +2.0 us
of the time labeled "analog inputs" for correct operation of the analog input clamps.
4 - All numbers are valid for both 525 and 625 standards. The line number marks on the horizontal
scale represent 525 system lines (63.5 us).
-20 us
4000-3 Switcher Autotime Window
33 us
analog inputs
Notes:
Содержание Grass Valley 4000
Страница 3: ...iii Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Страница 4: ...iv Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Страница 34: ...1 20 Section 1 System Overview ...
Страница 138: ...2 104 Section 2 Installation ...
Страница 196: ...3 58 Section 3 Functional Description ...
Страница 286: ...Index 6 Index ...