Hi Dave,
The UDC-8625A has 4 HD-SDI inputs, but only will process one at a time. The additional inputs provide provision for switching, mixing and keying. So, you will need one UDC for each HD-SDI source in this case.
For simple synchronization without conversion, our SFS-8622-A is a lower-cost frame synchronizer card for the openGear frame. Again, it is one channel per card.
Cheers,
Alun
Alun Fryer
Marketing Product Manager, Techincal – Infrastructure.
#openGear