The Keysight N1422A is a precision resistor box engineered to validate high-resistance measurement performance in sensitive test instruments. It delivers a fixed 100 GΩ resistance element for direct evaluation of Keysight Femto/Picoammeters and Electrometers, enabling both high-resistance characterization and current measurement assessment when paired with an external voltage source.
Technical Specifications
• Resistance Value: 100 GΩ (1 × 10¹¹ Ω)
• Bias Capability: Up to 21 V via interlock connector
– Key Features
• Coaxial and triaxial connector options for flexible test configuration
• Interlock connector rated for bias voltages to 21 V
• Purpose-built for high-impedance measurement validation
– Typical Applications
• High-resistance measurement capability evaluation in precision electrometers
• Current measurement assessment using external bias sources
• Performance validation of ultra-sensitive picoammeter instruments
– Compatibility & Integration
The N1422A integrates directly with Keysight’s B2980A series instruments:
• B2985A Femto/Picoammeter and Electrometer — high-resistance measurement
• B2987A Femto/Picoammeter and Electrometer — high-resistance measurement
• B2981A Femto/Picoammeter — current measurement with external bias
• B2983A Femto/Picoammeter — current measurement with external bias
The unit is specified as a component within the N1299A-301 Evaluation Kit for comprehensive system testing.
