For example: Agilent E4440A or Anritsu 68369
Keithley Model 6485 5-1/2 digit Picoammeter with 10fA Resolution

Model:6485

Manufactured by: Keithley Instruments

Category:Multimeters

Keithley Instruments 6485 Overview

ÿThe 5-1/2-digit Model 6485 Picoammeter combines Keithley's expertise in sensitive current measurement instrumentation with enhanced speed and a robust design. With eight current measurement ranges and high speed autoranging, this cost-effective instrument can measure currents from 20fA to 20mA, taking measurements at speeds up to 1000 readings per second.

  • ÿCost-effective low current measurement solution
  • 10fA resolution
  • 5-1/2-digit resolution
  • <200µV burden voltage
  • Up to 1000 readings/second
  • Built-in Model 485 emulation mode
  • IEEE-488 and RS-232 interfaces
  • Analog output
  • Driver for LabVIEW, LabWindows/CVI, Visual Basic, C/C++, and TestPoint included
  • ExceLINX Excel Add-In included

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