Two or more AdderView CATx 1000 units can
be connected together so that they operate in
a synchronised manner. Synchronised operation
is useful for applications that require multiple
video signals to be switched together. This type of
operation is usually required where each computer
is fitted with multiple video cards or video cards
with multiple video heads. Whenever a AdderView
CATx 1000 channel is switched, it sends an RS232
command out on the serial interface (marked

OPTIONS

on the

rear panel). An AdderView CATx 1000 will switch its channel if it
receives the same command on the serial interface. Consequently,
by linking the serial interfaces, a master unit may be made to
automatically switch one or more slave units as shown in the diagram.
It should be noted that the synchronisation cable deliberately does not have
the transmit pin of the Slave End connector linked to the receive pin of
the Master End connector. To do so would cause the Slave unit to be able
to switch the Master unit. This would setup an endless cyclical switching
sequence that would prevent the AdderView CATx 1000 devices from
operating correctly. For more details about the serial synchronisation cables,
see

Appendix 2

REMOTE

USER

X200

HOST

COMPUTER

CAM CAM

REMOTE

USER

X200

The local user ports can also
be used to view multiple
video head installations.

Notes
It is recommended that the
second CAM in each pair is a
USB-type and that it is plugged
to a vacant USB port on the host
computer to derive its power.
Pairs of CAMs can be strapped
back-to-back with cable ties to
create a tidy installation.