Agilent / Keysight E4407B 26.5 GHz ESA-E Spectrum Analyzer

The Agilent/Keysight E4407B ESA-E Spectrum Analyzer delivers signal analysis from 9 kHz to 26.5 GHz with internal mixing, extending to 110 GHz and 325 GHz using external mixers. Built for R&D, manufacturing, and field testing, this portable analyzer provides ±1 dB amplitude accuracy to 3 GHz and ±2.5 dB to 26.5 GHz, with DANL reaching -167 dBm using the internal preamp. The instrument achieves 99 dB third-order dynamic range and delivers up to 40 measurements per second with 1 ms RF sweep time.

Resolution bandwidth spans 1 kHz standard (10 Hz optional), with variable sweep points from 101 to 8192. The 50 Ω type N input accepts continuous power to +30 dBm and peak pulse power to +50 dBm. Frequency reference stability is ±5×10–6 across temperature.

Operation via 195–250 Vrms AC or 12–20 Vdc, consuming <300 W AC or <200 W DC. Five-minute warm-up ensures guaranteed measurement accuracy.

Technical Specifications

• Frequency Range: 9 kHz to 26.5 GHz (internal mixing); extends to 110 GHz and 325 GHz with external mixers


• Span: 0 Hz (zero span) to 26.5 GHz; 100 Hz minimum for swept operation


• Resolution Bandwidth: 1 kHz standard; 10 Hz optional; EMI bandwidths at 9 kHz and 120 kHz (–6 dB); Option 1DR adds 10, 30, 100, 300 Hz (–3 dB) and 200 Hz (–6 dB) EMI


• Amplitude Accuracy: ±1 dB to 3 GHz; ±2.5 dB to 26.5 GHz; 0.4 dB overall; ±2 dB response (13.2–26.5 GHz)


• Noise Floor: -167 dBm DANL (internal preamp); -155 dBm (10 Hz RBW, optional preamp); -137 to -132 dBm without preamp


• Dynamic Range: 99 dB third-order (+12 dBm TOI)


• Sweep Points: 101 to 8192 points


• Measurement Speed: 40 updates/sec; 1 ms RF sweep time; 33 ms local/remote update rate


• Input: 50 Ω type N (f); +30 dBm continuous; +50 dBm peak pulse


• Frequency Reference: ±2×10–6/year aging; ±5×10–6 temperature stability; ±5×10–7 settability


• Trigger Modes: Free run, single, line, video, offset, delayed, external

Key Features

• Zero-span mode for time-domain analysis


• Settable trigger options for synchronized measurements


• 40 measurements per second local and remote via GPIB


• Optional digital RBW filters for EMI precompliance


• AC and DC power operation for field deployment

Electrical Specifications

• AC Power: 195–250 Vrms, 47–66 Hz; <300 W consumption


• DC Power: 12–20 Vdc; <200 W consumption


• Warm-up Time: 5 minutes

Compatibility & Integration

• IEEE-488 GPIB interface (Option A4H)


• 25-pin D-SUB printer port


• External mixer support via option AYZ