GRASS VALLEY NV9649 User Manual page 156

Glossary
Source/ The term "source device" is used interchangeably with "source" and the term "destination
Destination device" is used interchangeably with "destination. " A source is a device that is connected to
one or more input ports. A destination is a device that is connected to one or more output
ports. An example of such a device would be a monitor.
A device can be both a source and destination. An example of such a device is a VTR.
System The system administrator is the person responsible for installing, configuring, and
administrator maintaining a router control system.
Tally (1) High or low button illumination.
(2) Tally interface to be defined.
Virtual level Virtual levels allow the system administrator to define a single physical router level as
multiple levels. Within a physical level, any port can be mapped to any virtual level. For
example, an AES matrix could be divided into AES 1/2 and AES 3/4 virtual levels.
X-Y (mode) A mode on an NV9000 control panel that switches one destination at a time, in contrast to
multi-destination mode. In X-Y mode, some panels can display the virtual levels for the
selected destination. Operators using those panels can perform breakaway level selection
and level mapping.
146