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