Albalá Ingenieros FRS3004C02, Руководство пользователя

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Albalá Ingenieros | Manual FRS3004C02
the digital stream for error detection as per SMPTE RP 165.
If one of the input signals is lost, the module can operate as a line synchronizer or frame
synchronizer. In each of these two modes the detection of a sync error in the input signal
stops the writing of data to the frame memory. The difference between the two modes
is in the process of reacquiring the signal. In Line Synchronizer Mode the frame memory
controller begins writing to the frame memory as soon as it receives a valid horizontal
sync. In Frame Synchronizer Mode the vertical sync information must be recovered
before the system begins to write data to the frame memory again. Line Synchronizer
Mode is used for recovery of SDI signals with defective bits, for example, as a result of a
switching event. Frame Synchronizer Mode has been designed for exclusive use with
video signals coming in from outside the production environment.
The user can configure the delay of the output signal with respect to the reference by up
to one frame with a resolution of 37 ns.
The bypass relay on the rear board of the module can connect one of the SDI inputs to
one of the two outputs (the protected output) such that the existence of signal at that
output is guaranteed even in case of a power supply failure or extraction of the module.
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