Repair and Service Evaluation - HP/Agilent E4401B, E4402B, E4403B, E4404B, E4405B

The Agilent/HP ESA-E Series spectrum analyzers (E4401B, E4402B, E4403B, E4404B, E4405B) deliver speed, dynamic range, and accuracy across RF and microwave measurement tasks. Built for R&D, manufacturing, and field service, these instruments provide signal analysis with configurable measurement personalities and optional enhancements.

Technical Specifications

• E4401B: 9 kHz to 1.5 GHz (50 Ω); 1 MHz to 1.5 GHz (75 Ω)


• E4402B: 9 kHz to 3.0 GHz (50 Ω); Option UKB: 100 Hz to 3 GHz (DC coupled), 100 kHz to 3 GHz (AC coupled)


• E4403B: 9 kHz to 3.0 GHz


• E4404B: 9 kHz to 6.7 GHz (DC coupled); Option UKB: 100 Hz to 6.7 GHz (DC coupled), 100 kHz to 6.7 GHz (AC coupled)


• E4405B: 9 kHz to 13.2 GHz (DC coupled); Option UKB: 100 Hz to 13.2 GHz (DC coupled), 100 kHz to 13.2 GHz (AC coupled) Frequency Reference (Option 1D5)


• Stability: ±5×10⁻⁶ (temperature), ±2×10⁻⁶/year (aging)


• Settability: ±5×10⁻⁷ Frequency Readout Accuracy


• ±(frequency indication × frequency reference error + span accuracy + 15% of RBW + 10 Hz + 1 Hz × N⁴), where N⁴ = LO harmonic mixing mode Marker Frequency Counter


• Accuracy: ±(marker frequency × frequency reference error + counter resolution)


• Resolution: Selectable 1 Hz to 100 kHz Frequency Span


• Range: 0 Hz (zero span) to analyzer maximum


• Resolution: Four digits or 2 Hz × N⁴, whichever is greater


• Accuracy: ±0.5% of span (8192 sweep points) Sweep Time


• Range: 1 ms to 4000 s Resolution Bandwidth (RBW)


• Standard: 1 kHz to 5 MHz (–3 dB) in 1-3-10 sequence


• Option 1DR: 10 Hz, 30 Hz, 100 Hz, 300 Hz (–3 dB) bandwidths available Video Bandwidth (VBW)


• 30 Hz to 3 MHz in 1-3-10 sequence Amplitude Specifications


• Measurement range: Displayed Average Noise Level (DANL) to maximum safe input


• DANL: –167 dBm (E4405B with internal preamp)


• 1 dB Gain Compression: ≥50 MHz at 0 dBm; ≥6.7 GHz at –3 dBm; ≥13.2 GHz at –5 dBm


• Absolute Amplitude Accuracy (50 MHz): ±0.34 dB


• Overall Amplitude Accuracy: ±0.4 dB (instantaneous), ±1 dB (up to 3 GHz), ±2.5 dB (up to 26.5 GHz) Noise Sidebands (1 kHz RBW, 30 Hz VBW, sample detector)


• ≥10 kHz offset: ≤–90 dBc/Hz + 20 Log N⁴


• ≥20 kHz offset: ≤–98 dBc/Hz + 20 Log N⁴


• ≥30 kHz offset: ≤–100 dBc/Hz + 20 Log N⁴


• ≥100 kHz offset: ≤–112 dBc

Typical Applications Signal analysis, component characterization, interference detection, modulation assessment, and noise floor evaluation across research, production test, and field service environments.