Trek Model 820 is contact type voltmeter， voltage measurement applications that demand virtually infinite loading impendance levels which are far beyond the reach of currently available high impendance voltmeter instruments.These applications include accurate reading of electrostatic voltage levels associated with ESD sensitive components, circuits, and surfaces.
Measurement Range:±2kV DC or peak AC
Accuracy:Better than 0.1% of reading
Input Impedance: Resistance greater than 1×10E15Ω
Capacitance：less than 10E-15F
