... not more than ±3%Reversal drain current of diode(IR)0.2uA/DIV~1A/DIV,divided into 6 grades2uA/DIV ... /DIV~500V/DIV divided into 10 grades,error≤±3%Scope of drain current voltage of diode100V/DIV~500V/DIV ... 3 grades,error≤±5%(for matching 5kv test floor)Scope of base voltage0.05V/DIV~2V/DIV divided into ... ~0.1A/STAGE,divided into 16 grades,error≤±5%Scope of step voltage0.05V/STAGE~2V/STAGE,divided into ...