Grass Valley Performer SD - Manual (Page 71)

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Installation Reference
Looping Cable Option Installation
The OPTION slot is typically used to loop the REMOTE connector
when more than one standard remote control panel is used or if
the Performer is placed in Slave Mode and used with TEN-XLs or
other Performers.
1. Remove the blank cover from the OPTION cutouts.
2. Attach the 26-pin ribbon cable (052781) between the
Looping Connector and the OPTION cutout. See the
illustration.
When the Looping connector has been installed, there are now
two control paths to and from the Performer microprocessor. The
microprocessor can use either of the two paths to receive
instructions from a control panel or additional switcher, or to send
instructions to additional frames.
OPTION
REMOTE
VAA Board
Ribbon Cable
Control Path to Microprocessor
Unused Tally Board
Connector
Looping
Connector
Control Path
To Microprocessor