Grass Valley XtenDD v.4.2.4 User Manual

Page 31

2. Panel Operation

2 – 2

Operating Instructions – Rev. 1 / 7.2002

2.2

SOURCE SELECTION

The

Production Switcher are equipped with 32 (standard), 48 or 62 serial

digital inputs, each usable as a video or key signal. The following internal signals
are also available:

Black, White

1 BGD matte for each M/E

Re-entry from M/E1, M/E2, M/E3

Re-entry of Program/Preset, “Clean Feed”, Util A ...Util E

16 “virtual” inputs with key memory
(any normal input with secondary input correction)

RAM recorder sources

DVx sources

Note: M/Ex cannot be selected as a picture source

When selecting the source, it may happen that the switcher levels M/E1, M/E2,
M/E3 or P/P cannot be re-entered as a source in another switcher level. This is not
a fault, but a protective mechanism to avoid loops and consequently timing prob-
lems. In this case, the switcher system prevents that close loops are built when se-
lecting the busses. For instance, in level M/E3, M/E1 cannot be selected when in
one of the most different combination paths the source M/E3 has been already se-
lected in level M/E1.

Find and disconnect the connention which prevent the picture source from being
re-entered. Beside the direct selection via the source buttons, there is a number
of internal connections which are not recognizable at the first sight.

Selection of the mask bus can be looked up in the Mask menu and all the other ones
(PGM, PST, Key, Fill) in the Status menu.

Re-entry problem

Solution