Grass Valley NVISION Compact CQX - Manual (Page 45)

Compact Router System Configurator • User’s Guide 33
6. Setting Up Machine Control Routers
An Overview of Machine Control Routers
The illustration below shows that the source device is a controlling device.
A destination can also be the controlling device, as shown below.
A controlling port is one connected to a controlling device. A controlled port is one connected to a
controlled device.
The compact machine control routers operate in “data reverse” mode. This means that in any con-
nection, the destination device is the controlling device. That is the default. It can be overridden by
port type.
Machine control routers have five port types, each of which is a variation of “controlled” or “con-
trolling”:
• Controlling or Controlled
The port settings fix the direction of the router port to “controlling” or “controlled.” The port’s
connection for Tx and Rx — made during configuration — is static and does not change during
operation.
• Dynamic
A dynamic port can be a controlling or controlled port depending on whether it is connected to
a master port or slave port. The port’s configuration is dynamic and can change during opera-
tion. Dynamic ports are typically assigned to VTRs.
A dynamic port may connect to any port.
• Master or Slave
Any dynamic port connected to a “master” port will be changed to a controlled port. A “slave”
port is the opposite of a “master” port: any dynamic port connected to a slave port will be
changed to a controlling port.
A master port must connect to either a dynamic or controlled port. A slave port must connect to
either a dynamic port or a controlling port.
The compact router applies logic to the port direction setting when a master port is connected to a
dynamic port. In this case, the machine at the dynamic port is always controlled and the machine at
the master port is always controlling.
In general, a controlling port connects to a controlled port. (Dynamic, master, and slave port types
are variants of “controlled” and “controlling.”)
Note Some external devices must be placed in “remote” mode to work with a machine
control router.