Grass Valley XSwitch Feb 08 2006 - Manual (Page 44)

44 XSwitch Installation and Operations Manual
Appendix B — C and D Position Example
(the pre-production ran long and there was no time to run the show from
the normal on-line control surface and A system). Once again this is a one
button push action to initiate.
Architecture
To support the C and D positions outlined above, there is the necessity of
both added hardware and rewiring of certain shared devices. The changes
are outlined below and are classified by the shared device which needs to
be controlled.
Note C & D modes of operation require Y communication cables that are not
included with the XSWITCH. For C & D operation, the customer is responsible
for Y communication cable fabrication.
Shot Director
In a typical A/B switch environment a single SHOT Director is used and
integrated with a dual system. This SHOT Director is used at the on-line
control surface. A second SHOT Director is provided with dual systems but
the intent of the second unit is as a ready spare. To fully utilize the capa-
bility of the C and D positions outlined above, the second SHOT Director
will be located at the off-line control surface and both units will be wired as
shown in
Figure 22 below.
Figure 22. Shot Director Dual Configuration
Operationally in the A position, the cameras are controlled by the On-Line
Control Surface SHOT Director which is being controlled by the A system.
Dual Serial Card 1 and Dual Serial Card 2 are in the A positions shown in
Figure 23 below.
A
System
Control Port
B
System
Control Port
Dual
Serial
Card 1
A In
B In
C Out
C Out
B In
A In
Dual
Serial
Card 2
C Out
B In
A In
C Out
B In
A In
On-Line
Control
Surface
Com 2 RS-485
Off-Line
Control
Surface
Com 2 RS-485
To Cameras
RS-232
RS-232
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