NV5256 Machine Control Router • User’s Guide
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2. Introduction
Overview
I/O Signals
I/O signals are serial (either RS-422 or RS-232) at up to 115.2 kBaud. Signals are bidirectional:
commands in one direction; responses in the other.
A port can be considered a “controlled” port or a “controlling” port.
A destination can also be the controlling device:
For example, a recording VTR sends signals from an edit list to various source machines in an edit
suite.
In most, if not all, cases a controlling device must communicate with a controlled device and not
another controlling device. (The reason is that a transmitter must connect to a receiver.)
S
The Tx-to-Rx connection, of course, depends on the cable. Straight-through cables are consid-
ered preferable.
Router Configuration
The NV5256 router has several configurable options. It supports several signal options that can be
configured for each port.
The router can be (and must be) configured to operate according to your system constraints. You
will need to specify the size of the router matrix, the type of ports, communication parameters, and
so on.
Your router control system must also be configured. In an NV9000 router control system, you will
specify source and destination device names, router names, levels, level sets, and so on.
The NV5256 itself must be initialized through UniConfig.
Router Control
The NV5256 can be controlled by an NV9000 Router Control System. An NV9000 system controls
one or more routers of different types. Central to the system are the NV9000 servers. The NV9000
can include one or more control panels with which operators may perform routes through the
NV5256 and through other routers.
Alternatively, you can use a compatible third-party control system such as the SMS7000.
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Using an SMS7000 control system requires specially configured router control cards.
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Controlled device
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SRC
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