The Keysight B2985B is a high-performance electrometer and high resistance meter engineered for precise measurement of femtoampere and picoampere currents, coupled with direct resistance characterization up to petaohm levels. Part of the B2980B Series, it delivers 6.5-digit resolution across multiple measurement domains and operates from a 4.3″ color LCD interface featuring graphical analysis tools. This instrument combines ultralow current measurement, high voltage sourcing, and real-time noise monitoring—critical capabilities for semiconductor characterization, materials science research, and precision electrical testing.
Technical Specifications
Measurement Ranges
• Current: 2 pA to 20 mA
• Minimum resolution: 0.01 fA (10⁻¹⁷ A)
• Voltage: 1 µV to 20 V
• Burden voltage: 200 TΩ
Performance Metrics
• Maximum reading rate: 20,000 readings/second
• Display resolution: 6.5 digits
• Sampling buffer capacity: 100,000 points
• Voltage source: ±1,000 VDC (independent measurement capable)
Environmental & Physical
• Temperature and humidity measurement supported
• Dimensions: 4.1 in (H) × 14.72 in (L) × 10.27 in (W)
• Weight: 11.24 lbs (5.1 kg)
• Indoor use, Overvoltage Category II, Pollution Degree 2
– Key Features
• Front-panel graphical interface (Meter View, Graph View, Histogram View, Roll View) for transient capture and statistical analysis without PC
• Real-time noise monitor and optional Setup Integrity Checker software for noise source identification
• Auto navigation for optimal range and aperture selection
• Independent current and voltage measurement capability
• Resistance sourcing up to ±1,000 VDC
– Typical Applications
Semiconductor device characterization, research-grade leakage current measurement, insulation resistance testing, materials science investigations, and quality control in high-impedance environments.
– Compatibility & Integration
USB 2.0, LAN, GPIB, and LXI Core. Front-panel USB enables direct data storage and setup management. Standard accessories include triax cable (1.5 m, 200 V), ground connection cable, and earthing wire (2 m).
