GRASS VALLEY NV9640 User Manual page 102

Glossary
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 maintaining a
administrator 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 a control 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.
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