1pA resolution Range 2000p,20n,200n,2u,20u,200u,2mA acc0.5% 3-1/2digits LED 1999 Input BNC(f) Voltage Burden<200uV Max Voltage 1000V 3sec Zero Check , Zero adjust screw Analog Output 2V max 1Kohm (Rear Panel) Recommend Source R 100Mohm(2000pA) 10Mohm(20nA)1Mohm(200nA) 100K(2uA) 10K(20uA) 1K(200uA)100ohm(2mA) AC 105-250V 6W 20VA 85-235-275mm 1.7Kg