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Functional Overview
2–2
SPG 422 Service Manual (B034000 and above)
Genlock Input Configuration
Connect the genlock signal in three different ways. Figure 2–2 illustrates the
various options.
Reference
black
To other
equipment
A
B
C
Master sync
generator
Reference
black
Master sync
generator 1
Master sync
generator 2
Reference
black
Reference
black
Master sync
generator 1
Figure 2–2: Various ways genlock input can be configured
Figure 2–2A shows the genlock as a loopthrough signal from genlock A to
genlock B. This application is common when the SPG 422 is close to the master
sync generator and the master sync still has other equipment to feed.
Figure 2–2B shows two possible genlock inputs: Genlock 1 and Genlock 2.
These are two different references. You can select which one you want from the
front panel (remember that the unselected genlock input is still terminated). An
application for this setup is a dual standard suite. One genlock input would be
the 525/59.94 standard and the other 625/50 standard. Set some blacks for each
standard, and the user can quickly shift between the standards with a menu
change.
Figure 2–2C shows a single genlock input. This is appropriate for the last signal
in a reference chain.
Genlock Timing
The commands under this menu set the amount of advance or delay for all the
output signals relative to the genlock input. The individual signals can then have
their timing adjusted in their own menus.
You do not need to press ENTER for these commands. All changes will occur as
you make them.
The submenus for genlock timing are: field timing, vertical offset, horizontal
offset, and fine horizontal offset.
Summary of Contents for SPG 422
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