The Negative Supply Rail block represents an
ideal negative supply rail. Use this block instead of the Simscape™ DC
Voltage Source block to define the output voltage relative
to the Simscape Electrical Reference block that
must appear in each model.
Do not attach more than one Negative Supply Rail block
to any connected line.
Dialog Box and Parameters
The voltage at the output port relative to the Electrical
Reference block ground port. The default value is -1 V.