Agilent/Keysight N1294A

The Agilent/Keysight N1294A is an accessory module kit that extends the measurement and synchronization capabilities of Keysight B2900A Series Precision Source/Measure Units and B2960A Series Low Noise Power Sources. Comprising specialized adapters, cables, and filters, the N1294A enables sub-nanoampere measurements, instrument triggering, multi-unit synchronization, and noise reduction for precision analog and RF testing.

Technical Specifications

• Banana-Triax Adapters (N1294A-001, N1294A-002): Optimized for measurements below 1 nA; 2-wire and 4-wire Kelvin configurations available


• Ultra Low Noise Filter (N1294A-021): 42 V, 105 mA; 50-ohm output impedance; output noise 10 µVrms (10 Hz to 20 MHz) or 1 nVrms/√Hz at 10 kHz


• Low Noise Filter (N1294A-022): 210 V, 3 A


• GPIO-BNC Trigger Adapter (N1294A-031): Converts GPIO trigger signals to BNC connectors for cross-instrument synchronization


• Digital I/O Trigger Cable (N1294A-032): Enables daisy-chain synchronization of up to four B2900A SMUs via EasyEXPERT group+ software


• Interlock Cables (N1294A-011, N1294A-012): Dedicated for 16442A/B test fixture integration with safety interlock functionality

Key Features

• Sub-nanoampere measurement capability through dedicated low-current adapters


• Ultra-low output noise performance for demanding analog characterization


• Multi-unit synchronization architecture supporting four-unit daisy-chain configurations


• Flexible trigger signal routing via GPIO-to-BNC conversion


• Test fixture integration with safety interlock compliance

Typical Applications

• High-impedance device characterization below 1 nA


• Low-noise power sourcing for precision analog and RF component validation


• Multi-channel synchronized measurement sequences


• Test fixture automation with safety-critical interlocking

Compatibility & Integration The N1294A accessory set works with Keysight B2900A Series SMUs (B2901A, B2902A, B2911A, B2912A), B2960A Series Low Noise Power Sources, B2961A/62A Low Noise Power Sources, and Keysight 16442A/B test fixtures.