deviceDesc = Keithley 2450 sourcemeter

makenv smi -driver k2450 -port k-2450-04332244:5025 -controller _k2450 current /r
makenv smv -driver k2450 -port k-2450-04332244:5025 -controller _k2450 voltage /r
makenv r -driver value

GraphAdd smi A smi
GraphAdd smi.set A smi_set
GraphAdd smv V smv
GraphAdd smv.set V smv_set
GraphAdd r Ohm R

#debug _k2450