A/D LINEARITY: ±(0.8ppm of reading + 0.5ppm of range).● INPUT IMPEDANCE10mV–10V: >10GΩ, in parallel with <1.5nF (Front Filter ON).10mV–10V: >10GΩ, in parallel with <0.5nF (Front Filter OFF).100V: 10MΩ ±1%.