Keysight B2985B Electrometer/High Resistance Meter

Overview

The Keysight B2985B is a battery-powered graphical electrometer and high-resistance meter designed for precision measurements of low-level currents and extreme resistance values up to 10 PΩ (10¹⁵ Ω). Battery operation eliminates AC power line noise, enabling measurements previously impossible with line-powered instruments. The 4.3-inch color LCD interface provides real-time trend charts, histograms, and numeric displays with an integrated ±1,000 V voltage source for comprehensive material and device characterization.

Key Features

• Minimum current resolution of 0.01 fA (10⁻¹⁷ A) with current measurement range 0.01 fA to 20 mA
• 6.5-digit measurement resolution
• Resistance measurement up to 10 PΩ (10¹⁵ Ω)
• Input impedance > 200 TΩ for voltage measurement up to 20 V
• Built-in ±1,000 V voltage source
• Battery operation for AC line noise-free measurements
• Charge measurement from 1 fC to 2 μC with 6.5-digit resolution
• Graphical viewing modes: Meter, Graph, Histogram, and Roll View
• Real-time histogram and auto navigation for optimal settings
• Setup Integrity Checker function for noise isolation (optional)
• Versatile interfaces: USB 2.0, LAN, GPIB, LXI Core

Applications

• Material science research (dielectrics, ferroelectric materials, semiconductors, polymers)
• Device characterization (capacitors, resistors, sensors, optoelectronics)
• High-impedance material testing and analysis
• Noise-sensitive measurements requiring battery operation