Sierra Video TyLinx Pro - Manual (Page 62)

TyLinx Pro Help 62
© 2012 Sierra Video Systems
Source and destination names (virtual names) apply to all levels.
That is, you cannot give different
names to a given source on each level. You can only give it a single name that must apply to all
levels. Think of (virtual) source names as names given to source numbers, and think of (virtual)
destination names as names given to destination numbers. Input and output names may be different
on each level.
That is, an input may be given one name on level 1, and an entirely different name on
level 2. Think of input names as names given to input connectors, and output names as names given
to output connectors.
Often, an input’s name will be the same on all levels, and likewise for an output’s name. Furthermore,
it will often be the case that a source’s name will be the same as the name of the input it is mapped to,
and likewise for destination names. However, it’s your choice.
A user typically controls a routing switcher by using a control panel to enter and view destination,
source, input and output names and numbers. Below is a summery of the typical process a user
would go through to examine and take a destination using a control panel:
1. Destinations are shown and selected by the user using the destination name and/or the destination
number. The physical output number that the destination maps to, or its name, is not shown on the
control panel.
2. The crosspoint status of a destination is usually shown using the physical input names and/or
numbers on each level. There are two reasons why the virtual source names/numbers are not used:
(a) source names apply to all levels, while input names can be different on each level, and it is often
important when displaying status to be able to see different names on each level; (b) if multiple
mapping is used, displaying the input name rather than the source name reduces confusion by
showing the actual physical signal name, which will be the same for two different source names
with multiple mapping. Because names are often the same on all levels, and the same for a source
and its mapped input, it will often be the case that if source names had been displayed instead, they
would be the same.
3. Some control panels allow the crosspoint status of a destination to be viewed using source names
and/or numbers rather than input names/numbers. The SCP series of control panels can be set to
show status in either form (source names or input names). It is user selectable when programming
the control panel using the SVS GRIP router control software.
4. Takes are composed by the user using either source or input names, or source numbers. A user may
enter either a source name or an input name or a source number for each level of the take he is
composing. An entered name is looked up in both the source and input name tables, to locate the
source number to use for the take. If the name is found in the input name table, the first source that
is mapped to that input is used. The behavior is slightly different depending on whether he is
composing an all-levels (AFV) take, or a breakaway take. If an all-levels take is being composed,
the name is first looked up in the source name table, and if not found, the input name table is
searched for the name. If a breakaway take is being composed, the search order is just the opposite,
with the input name table searched first, and then the source name table. In many cases the search
order would make no difference, because the same names are used for source and its mapped input.
The number of sources and destinations in a Sierra virtual-mapped router can be configured by
the user. It can be many more than the physical size of the router, which can be useful in different
ways.
There are many uses for virtual mapping, such as:
1. Virtual sources can be mapped in such a way as to permit an all-levels take of that source to
accomplish what would previously have to have been done with a breakaway take. You could map
some virtual sources on all levels, while mapping others on only a few levels, and leaving other
levels unmapped. This permits doing all-level takes that affect only some levels.
2. You may wish to keep all the signals from one type of machine grouped together in the same group
of source or destination numbers, and yet you may want to have the flexibility to add more of these
signals at a later time without having to move a lot of signals from one connector to another.
Suppose that VTR1-VTR8 are assigned to input connectors 1-8, and CAM1-CAM12 are assigned
to input connectors 9-20. The mapping table is set up so that sources 1-8 are VTR1-VTR8, and
sources 9-20 are CAM1-CAM12. Later on, you add VTR9, and you want to make it be source 9,
and make CAM1-CAM12 be sources 10-21. But at the same time you do not want to have to move