Agilent/Keysight ESA-NFA Series N4002A Kit

The N4002A is a Smart Noise Source (SNS) Series noise figure application kit engineered to extend the measurement capabilities of ESA, NFA, and X-Series spectrum analyzers. It delivers precise noise figure characterization for devices up to 30 dB across a broad frequency spectrum, with integrated intelligence that reduces setup time and minimizes measurement uncertainty through automatic calibration data management and real-time temperature compensation.

Technical Specifications

• Frequency Range: 10 MHz to 26.5 GHz


• Excess Noise Ratio (ENR): 15 dB nominal; 12 to 17 dB range


• Noise Figure Measurement Capability: Up to 30 dB DUT noise figure


• Input/Output Connector: APC 3.5 (mm) standard; Type-N available (Option 001)


• VSWR: 1.35:1


• Operating Temperature Range: 0 to 55°C

Key Features

• Smart Noise Source Technology

Electronic ENR calibration data storage eliminates manual entry and associated user error. Automatic ENR data download to compatible analyzers accelerates measurement setup.

Integrated Temperature Sensing

On-board temperature measurement enables real-time compensation of ENR calibration data, tightening measurement accuracy across operating conditions.

Direct Analyzer Integration

Native compatibility with ESA and NFA series analyzers; extended support for PXA, MXA, EXA, and CXA signal analyzers through standard SNS cable interface.

Typical Applications

• Low-noise amplifier (LNA) characterization and acceptance testing


• RF receiver chain noise figure verification


• Broadband amplifier noise performance validation from microwave through millimeter-wave frequencies

Compatibility & Integration The N4002A operates with ESA and NFA series spectrum analyzers as primary platforms. Extended compatibility encompasses Keysight X-Series signal analyzers (PXA, MXA, EXA, CXA). Operation requires an SNS cable assembly (e.g., 11730A). Complete operating and service documentation, along with RF and microwave noise figure application notes, are available for the SNS Series product family.