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Input Setup – Virtual Math Channel
Virtual math channels allow you to perform math functions on the data from 
two physical channels and store the calculated result as a virtual channel. Up to 
16 virtual channels can be configured.
Standalone Operation
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Figure 3-22 Input Type - Virtual Math
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1.  Channel Type Buttons 
Allows selection of either a real physical input channel or a virtual Math 
channel.
2.  Math Channel Settings 
Selects the channel number, color and name to assign to the new math channel.
3.  Channel Operations 
Selects the two physical channels and math operation to perform.
4.  Scaling Factors 
Multiplies the channel value by the selected scale factor before performing the 
math operation to the two channels. The scaling factor can be either whole or 
decimal numbers.
5.  Channel Map 
The channel map provides a visual indication of the previously configured 
channels (shown in blue) and the currently selected channel (shown in orange).