Key feature and specification comparison 8588A 8558A DC voltage 100 mV – 1000 V 100 mV – 1000 V AC voltage 10 mV – 1000 V, 1 Hz – 10 MHz 10 mV – 1000 V, 1 Hz – 10 MHz Resistance, LoI, HV 1 Ω - 10 GΩ 1 Ω - 10 GΩ DC current 10 uA – 30 A 10 uA – 2 A AC ...