Increment, decrement mA output in 25% steps Select Mode: mA source, mA simulate, measure mA, measure mA with 24V loop power supply, measure VDC Fine Adjust, mA output: 1 A step per unit MODE AM 100μA Dual display readout in mA and span percentage Depress both buttons to activate Auto Step and Auto Ramp in mA output mode Power On/Off with power save mode Toggle from 0 to 100% output in span check mode Course Adjust, mA output: Depress knob for 100 A step per