Service manual

Encore — Configuration Manual 201
Concerto Port Matrix One-to-Many Control
Concerto Port Matrix One-to-Many Control
Background
Previous Concerto Port Matrix software supported one-to-one bi-direc-
tional control for RS-422 serial data routing. To facilitate dubbing opera-
tions, where video may need to be recorded to multiple devices
simultaneously, the Encore 1.8.0 release supports one-to-many data
routing.
The previous Concerto one-to-one control mechanism used the convention
of having the controlling device (for example, a record VTR) be considered
a Destination. Transport commands originating from the controlling device
were directed to a Source over a bi-directional link. This supported the
principal that choosing a different Source for that Destination could also
automatically route the control data path from the controller to that new
Source. However, this mechanism doesn’t allow multi-drop connections,
since each Destination can have only one Source.
The new one-to-many implementation still employs the above strategy for
a first bi-directional control connection. But it also supports additional, one
directional control paths, as illustrated in
Figure 126. These additional
paths allow sending control signals to multiple locations, and essentially
reverses the Destination/Source control convention to match traditional
routing concepts, where a Source can be sent to multiple Destinations.
Figure 126. Single and Multi Device Control
Note This mechanism allows the existing two direction control and status commu-
nication between the controlling and first controlled device, but only com-
mands will be issued to the additional controlled devices. Should these
additional devices experience transport errors, no notification will be sent
back to the controlling device.
8153_07r0
Controlling
Device
One-to-One Considered a Destination
One-to-One Considered a Source
One-to-Many Considered a Source
One-to-Many Considered Destinations
First Controlled
Device
Controlled
Device 2
Controlled
Device 3
Bi-direction Communication
Single-direction Communication