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The return SDI inputs allow you to connect up to three return feeds from your switcher. These
feeds will be fed to your camera so that they can be viewed by the camera operator, or fed out
via SDI to other equipment.
NOTE If you connect Ultra HD to the return inputs, the Ultra HD video will be down
converted to 1080p at the same frame rate, so the output from the camera unit will be
HD. Down converting the Ultra HD return signals to HD allows for greater bandwidth
so you can send multiple return sources.
Reference Input and Output
If you are not using an ATEM switcher and need to lock equipment to a common external
reference signal, plug the externally generated signal into the reference BNC input. This sends
the reference to the camera unit via the SMPTE fiber cable. The reference BNC output from the
studio unit can be used to loop the reference source to other equipment.
Use the ‘ref in’ connection to send traditional reference timing
from other broadcast equipment to your camera
Talkback Interface
The DB-25 intercom and tally connector lets you connect to third party intercom and tally
systems. A pin out diagram is provided below if you need to build a custom cable. Once you
have wired up to the pins for engineering, production, tally or program audio input, you will
need to set the menu accordingly on your Blackmagic Studio Fiber Converter.
The external view of the 25 pin ‘intercom/tally’ connector
185Studio Unit Connections
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