The Z+ series of programmable power supplies have two independent open collector control signals that can be set by the operator to a high or low state. This is achieved using the menu button and the multi-function voltage and current encoders.
For example, the Z+ output polarity to a load can be changed through the use of external relays. Either the front panel or software can activate the signals.
More information about the Z+ can be found via these links:
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