Crystal Vision
Introduction
Smart Switch 3G User Manual R1.10
4
01/09/2016
Smart Switch 3G will take its timing information from the best of both inputs to determine the
correct time to do a switch. If an input is absent the ability to manually control the input
routing is disabled (unless the input missing test is overridden). How clean the switch is will
depend on several factors such as if the standby signal is synchronous with the main
programme or if the detected fault does not cause a disruption to the timing information such
as audio silence or video black. Loss of input will cause a complete loss of timing information
and will result in an immediate crash switch and will be likely to result in a brief picture
disturbance.
The Smart Switch 3G fits in Crystal Vision’s four standard frames and can be integrated with
any boards from the company’s full product range. The RM53 and RM54 are the frame rear
modules which in addition to the two SDI inputs main and standby, give a switched output, a
fixed output and a user-selectable output that can show either inputs or a further main output.
The RM54 also has relay bypass between its input 1 and output 1 which will automatically
connect the programme on input 1 to the output in the unlikely event of a frame failure or
should the Smart Switch 3G be removed for service.
Applications include immediate reaction to and indication of signal or transmission problems
in large systems, especially in unmanned automatic playout facilities or as a simple signal
probe.