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Tracking mode is one of multi-channel power supply control modes in which single channel (driving) control means an identical change of the same parameter of another channel (driven), i.e. as a result the parameters of both channels change simultaneously.
In multi-channel power supplies controlled device outputs can be connected with each other parallel or sequentially. In this case, in fact, a multi-channel power supply becomes single-channel. When the connection is parallel output maximum possible accumulative value is doubled, in sequential connection – accumulative output voltage is increased. In this case one of the channels becomes driving, the second one – driven. For example, when the connection is sequential the output voltage on the driven source changes in the tracking mode after the change of the leading source voltage. So the both channels control is very simple by the driving channel controls.