Hello Boris,
Ultriscape has two different styles of UMD objects
The standard UMD object which is associated with a video PIP - these are driven via TSL protocol messages.
The 2nd type is the Remote RossTalk driven label object
I am not aware of a way to send TSL based messages from the switcher based on a GPI
You could create a custom control controlled by a GPI which would send a RossTalk command to Ultrix to control a RossTalk label object.
Tally on (RED BG with white text)
TXTLABEL ID:501; TEXT:CAM-1; BGCLR:0xFF,0x00,0x00; TXTCLR:0xFF,0xFF,0xFF
Tally off (black BG with white text)
TXTLABEL ID:501; TEXT:CAM-1; BGCLR:0x00,0x00,0x00; TXTCLR:0xFF,0xFF,0xFF
Then create a remote UMD with the ID matching the ID in your RossTalk string

This is not the ideal solution - I believe that effectively what you are asking for is tally from two different vision mixers.
You can't simply have two vision mixers send tally state to the Ultrix. That is because for a given TSL ID (source or PIP destination) there can only be one sender - if you had two mixers sending the same ID, they would "step on each other" causing one mixer to turn on a tally, then moments later the other mixer to turn off the tally.
In your scenario, the first vision mixer is the Acuity via a network connection and the second is a GPI based vision mixer. Once you have more than on vision mixer, you really need to consider a tally management solution.
With a tally management solution, you will have the ability two define where the tally comes from for a given object such as a PIP UMD or GPO for camera tally
You could for example specify a PIP to tally from Mixer-1 (IP), Mixer-2 (GPI) or you could "OR" them so that if a source is on either mixer, it would be tallied.
Ross's tally management solution is based on Ultricore Tally which is an option for BCS - this would be the controller - to this, you would need to add a GPI I/O device such as the TXI-48, TXP-16, or the OpenGear GPI-8941
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David Russell
Ross Video
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