Agilent / Keysight E4402B 3.0 GHz ESA-E Spectrum Analyzer

The Agilent/Keysight E4402B ESA-E is a spectrum analyzer covering 9 kHz to 3.0 GHz, purpose-built for RF and microwave characterization across R&D, manufacturing, and field service environments. It delivers fast measurement acquisition with flexible trigger modes, selectable resolution bandwidths down to 10 Hz (with Option 1DR), and input handling up to +30 dBm average continuous power or +50 dBm peak pulse power. The instrument supports frequency span from zero span to 3.0 GHz with up to 8192 sweep points, marker-based frequency counting with 1 Hz resolution selectivity, and video bandwidth control from 1 Hz to 3 MHz.

Its modular architecture accepts options including narrower RBW filters, extended sweep timing, and advanced trigger capabilities - enabling customization to meet application-specific measurement demands.

Technical Specifications

• Range: 9 kHz to 3.0 GHz


• Reference aging: ±2×10⁻⁶/year (±1×10⁻⁷/year with Option 1D5)


• Temperature stability: ±5×10⁻⁶ (±1×10⁻⁸ with Option 1D5)


• Frequency span: 0 Hz (zero span) to 3.0 GHz with ±0.5% accuracy at 8192 points


• Sweep time: 1 ms to 4000 s; 10 µs to 4000 s (Option AYX); 50 ns to 4000 s (Option B7D)


• Marker frequency counter resolution: 1 Hz to 100 kHz (selectable) Resolution and Selectivity


• Resolution bandwidth: 1 kHz to 5 MHz (–3 dB); 9 kHz and 120 kHz EMI bandwidths


• Option 1DR adds: 10, 30, 100, 300 Hz (–3 dB) and 200 Hz (–6 dB) EMI


• RBW accuracy: ±15% (1 kHz to 3 MHz), ±30% (5 MHz), ±10% (10–300 Hz with Option 1DR)


• Selectivity: <5:16 (10–300 Hz), <15:16 (1 kHz–5 MHz)


• Video bandwidth: 30 Hz to 3 MHz; 1 Hz to 3 MHz (Option 1DR) Amplitude


• Input attenuator: 0 to 65 dB in 5 dB steps


• Maximum safe input: +30 dBm (1 W) at ≥15 dB attenuation; +50 dBm (100 W) peak pulse at ≥30 dB; 100 Vdc


• 1 dB compression: 0 dBm (50 MHz–6.7 GHz), –3 dBm (6.7–13.2 GHz), –5 dBm (13.2–26.5 GHz) Trigger and Sweep


• Modes: Free run, Single, Line, Video, External, Delay, Gate (Option 1D6), TV (Option B7B)


• Delay range: 1 µs to 400 s


• Trace points: 101 to 8192 (2 to 8192 at zero span)

Key Features

• Zero-span capability for time-domain signal analysis


• Pulse measurement support with 50 ns minimum sweep time (Option B7D)


• Narrow RBW options (10 Hz minimum) for EMI diagnostics and signal separation


• Dual video bandwidth control for noise reduction and trace smoothing


• Frequency readout accuracy ±(frequency reference error + span accuracy + 15% RBW + 10 Hz)

Typical Applications

• EMI/RFI troubleshooting and compliance pre-screening


• Transmitter spectral purity and adjacent-channel power measurement


• Component and subsystem characterization in L-band and lower frequencies


• Time-correlated signal analysis via zero-span and gating modes

Compatibility & Integration The E4402B accepts frequency reference improvements (Option 1D5), narrower bandwidth filters (Option 1DR), accelerated sweep timing (Options AYX, B7D), and specialized trigger logic (Options 1D6, B7B) to adapt to evolving measurement workflows.