Grass Valley Kayenne XL Package v.7.0.4 - Manual (Page 401)

Kayenne XL Package — User Manual 399
Config Menu
Tally In Page
The General Purpose Interface Output/Tally menus are used to configure
the tally system. There are multiple tally calculators, three different tally
calculation methods, and user assignment of tally relays. The results of the
tally calculators are applied to the tally relays on the Video Processor frame,
and those relays control external tally lights.
Tally is recalculated and refreshed every field.
In addition, the GPO Output contact closures are used by the Kayak HD
system for simple trigger control of external devices.
About Tally Systems
In general, a tally system identifies which sources to the switcher contribute
to the final picture at a selected point in the video chain. The identification
is communicated by activating relays in the video frame. The method by
which the sources are determined is called the tally calculation.
The tally calculation begins at a point in the video path and then traces the
path of the signals upstream to their original video (and key) sources. The
state of the switcher affects tally. For example, tally on a true clean feed only
includes sources that contribute to the main output, but tally on a program-
mable clean feed can include sources that do not contribute to the main
output.
The On Air Tally (Red Tally) calculations are essential for switcher opera-
tion. This tally calculation forms the basis for On Air indication (panel,
camera tally lights, etc.), and other functions such as external device Auto
Start, Off Air Advance, or router protections. On Air tally calculations nor-
mally start at the Pgm-Pst PGM outputs.
User tally calculations can be used for purposes other than On Air tally.
These tally calculations still trace the video path upstream from the speci-
fied points in the video path, but the starting point does not necessarily
have to be a program output. For example, a Look Ahead tally begins at the
Pgm-Pst Look Ahead Preview (LAP). When a transition is not in progress,
this virtual output is not on air.
The Output Tally (Green Tally) calculator indicates which sources contribute
to designated outputs. For example, an M/E Iso tally is a user configured
Output tally set up to begin at an M/E’s PGM. The tally would indicate
what contributes to the M/E's program outputs but not anything down-
stream of it. The tally would be the same whether or not the M/E was On
Air.
The Look Ahead Tally (Yellow Tally) calculator indicates which sources will
be on air if a main transition is performed on the selected level. One way
this can be used is for a second set of tally lamps on a camera to alert the
camera operator that his camera is next to be taken on air. Many control