@GGG posted:Refresh me what does this does? It works on an operating layout or just test a TIU output on a bench? G
Both! The basic idea was to install them permanently right inside the TIU. Once installed and on the layout they continuously monitor any data packets sent out by the TIU. On the bench they give unmistakable evidence of TIU data output once the TIU and channels are powered up. If any TIU channel does not show output when any handheld command is issued, it should be considered suspect and checked further using a scope. Hope that helps!
Rod