The Keysight B2985A Electrometer/High Resistance Meter delivers femtoampere-level current measurement and petaohm resistance characterization for ultra-sensitive electrical testing. With 0.01 fA (10⁻¹⁷ A) resolution and a maximum measurable resistance of 10 PΩ, this instrument addresses demanding applications in materials science, device physics, and precision quality control. The integrated ±1000 V DC source enables resistance measurement up to 10 PΩ without external excitation.
A 4.3″ color LCD display provides real-time graphical analysis—meter view, X-Y plots (I-V, I-t, R-t, Q-t, I-R), histograms, trend charts, and time-domain transient capture—eliminating reliance on external PC control for routine measurements. The instrument acquires up to 20,000 readings/s and buffers 100 k measurement points on-board.
Technical Specifications
• Current Measurement: 0.01 fA to 20 mA (minimum range 2 pA); 6½-digit resolution
• Voltage Measurement: 1 µV to 20 V; input resistance >200 TΩ
• Resistance: Up to 10 PΩ with 1000 V source
• Charge Measurement: 1 fC to 2 µC
• Source: Integrated ±1000 V DC
• Display: 4.3″ color LCD with graphical GUI
• Reading Rate: 20,000 readings/s
• Sample Buffer: 100 k points
– Key Features
• Real-time noise monitoring and ammeter guarding
• Setup Integrity Checker Software (optional) for noise source isolation
• Null, filter, and math functions; timer-based triggering
• Measurement speed modes: Quick, Normal, Stable, Manual
• Temperature and humidity sensor interfaces; included N1423A thermocouple
• Internal rechargeable battery option (B2987A) for AC line noise rejection
– Typical Applications
• Semiconductor material characterization and device leakage analysis
• High-resistance component testing and surface insulation resistance
• Photocurrent and radiation detector measurement
• Electrostatic discharge and piezoelectric transducer evaluation
– Compatibility & Integration
• Ethernet/LXI, USB 2.0, GPIB interfaces
• SCPI command compatible
• Supplied with 16494A triaxial cable and N1423A thermocouple
