I am thinking of using a C_CONSTANT module with a value of 2.5 and then connect the EXTCONTROL and the C_CONSTANT to a C_SUBTRACT module to bias negatively the 0/+5V voltage to -2.5V/+2.5V and then feed that to a C_MULTIPLY with a value of 2 to get the -5V/+5V range. What do you think?
