Grass Valley NV9642 v.1.2 - Manual (Page 16)

6
Introduction
Panel Organization
In MD mode, the status column represents the sources routed to each of the destinations in
the ‘Level/Dest’ column. Again, these are the current sources.
In X-Y mode, the display uses its top row to show the selected destination. Therefore, in X-Y
mode, the display scrolls 3 lines at a time.
In multi-destination (MD) mode, the display uses all 4 lines to show MD destinations. In MD
mode, the display scrolls 4 lines at a time.
The display fields can show either aliases or system mnemonics for devices depending on (1) the
state of the ‘Name Set Toggle’ button (if the panel has one), (2) the default name set (3) the exist-
ence of name sets in the NV9000 configuration. (An alias is a name defined in a name set.)
Flags
The display also shows flags of different kinds next to the sources and destinations.
Selection Marks
At the far right of the display are marks (3 small bars) that turn on to indicate selections.
In X-Y mode, the marks turn on to indicate that a level is selected and are not visible otherwise.
(The operator makes level selections in the button array.)
In MD mode, a mark appears to the right of the currently selected destination (and of all the
currently selection destinations in hold mode).
Other Signs
A plus sign (+) indicates that additional information is available. There is an ‘Info’ button that
operators may press to view the additional information.
In MD mode, an asterisk (*) directly after a source indicates a breakaway on that destination.
An ‘L’ indicates that a device has been locked. A ‘P’ indicates that a device has been protected.
NV9642 operators may lock, protect or release destinations. It is important for operators to
know that other operators may lock, protect, or release sources and destinations.
Tally Interface
At the rear of the panel is a DB25 connector that provides 8 tally inputs and 4 tally outputs. (The
outputs are solid state relay outputs.) Both inputs and outputs are optically isolated.
During configuration, you can construct Boolean logic that switches the outputs on. The terms
of the logic expressions are states of the source and destination devices, etc., controlled by the
NV9000 control system.
During configuration, you can prescribe NV9642 behavior that depends on the tally inputs.
What you connect to the tally interface is, of course, up to you. Grass Valley provides a breakout
cable (WC0053) for the tally connector as a purchase option.
The NV9000-SE Utilities on-line help documentation calls the tally interface a GPIO interface. On
the rear of the panel, it is labelled a “GPI interface.”
See Chapter 6, GPIO , on page 69, for complete detail.