NewTek 3Play 4800 - Manual (Page 126)

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Figure 90
Each output channel can function completely independently of the other; either can be directed
at any time to transmit any available audio/video source, whether live or recorded.
Physically, these two channels are individually supplied to connectors on the system’s backplate
for output to downstream devices. These comprise Output 1 (3Play’s Channel A output) and 2
(Channel B). During live production, both are represented on the Replay Desktop by individual
output monitors (Figure 90).
Tip: A third, special output is called Aux (for “Auxiliary”), and is carried on Output 3 – more about
Aux later.
8.1.1 CHANNEL DELEGATES
Transport (PLAY, STOP, etc.) and many other similar
operations normally affect just one channel. That selection is
determined by the active Channel Delegate button on the
Control Surface.
As you would expect, pushing the Control Surface button
labeled A directs operations to Channel A; Likewise, pushing
B assigns control operations to Channel B.
Only one Channel Delegate can be selected at a time, and all operations and input are directed
to that channel and its source (certain controls can affect both channels when LINK mode is on –
see Section 8.4.1).
Figure 91