Agilent / Keysight E4411B 1.5GHz ESA-L Spectrum Analyzer

The Agilent/Keysight E4411B ESA-L Spectrum Analyzer is a 1.5 GHz spectrum analyzer engineered for RF signal characterization across communications, research, and development environments. Operating from 9 kHz to 1.5 GHz, it delivers frequency readout accuracy of ±(frequency readout × frequency reference error + span accuracy + 15% of RBW + 10 Hz) with a frequency reference aging rate of ±2 × 10⁻⁶/year. The instrument provides amplitude measurement capability with ±0.4 dB accuracy at reference settings and supports input attenuation from 0 to 60 dB in 5 dB steps.

Resolution bandwidth spans 100 Hz to 5 MHz with ±10% accuracy across 1 kHz to 1 MHz settings, while video bandwidth ranges from 30 Hz to 1 MHz. Sweep performance includes 5 ms to 2000 sec sweep times with ±1% accuracy and supports free run, single, line, video, delayed trigger, and external sweep modes. Phase noise performance reaches −101 dBc/Hz at 1 GHz with 10 kHz offset and −122 dBc/Hz at 100 kHz offset.

The analyzer accepts peak pulse power up to +30 dBm with ≥15 dB attenuation and features a high-resolution color display optimized for signal visualization. Rapid warm-up time enables quick measurement availability, while the rugged design suits both benchtop and field deployment. PowerSuite one-button RF power measurements are standard.

Technical Specifications

• Frequency range: 9 kHz to 1.5 GHz


• Frequency span: 0 Hz (zero span) and 100 Hz to 1.5 GHz


• Frequency span accuracy: ±1% of span


• Frequency reference aging: ±2 × 10⁻⁶/year, ±1.0 × 10⁻⁷/day


• Frequency reference temperature stability: ±5 × 10⁻⁶


• Frequency reference settability: ±5 × 10⁻⁷


• Phase noise at 1 GHz (10 kHz offset): −101 dBc/Hz


• Phase noise at 1 GHz (100 kHz offset): −122 dBc/Hz Amplitude Specifications


• Amplitude accuracy (reference settings): ±0.4 dB


• Input attenuator range: 0 to 60 dB in 5 dB steps


• 1-dB gain compression point: 0 dBm


• Maximum safe input level (≥15 dB attenuation): +30 dBm


• Peak pulse power (≥15 dB attenuation): +30 dBm


• Third-order intermodulation (TOI): +7.5 dBm Resolution & Video Bandwidth


• Resolution bandwidth range: 100 Hz to 5 MHz (1-3-10 sequence)


• RBW accuracy (1 kHz to 1 MHz): ±10%


• RBW accuracy (9 kHz, 120 kHz, 3 MHz): ±15%


• RBW selectivity (60 dB/3 dB ratio): <15:1


• Video bandwidth range: 30 Hz to 1 MHz (1-3-10 sequence) Sweep & Trigger


• Sweep time range: 5 ms to 2000 sec


• Sweep time accuracy: ±1%


• Sweep trigger modes: Free run, single, line, video, delayed trigger, external

Key Features

• Five-millisecond full-span RF sweep capability


• Marker frequency counter with accuracy of ±(marker frequency × frequency reference error + counter resolution)


• Narrow resolution bandwidth measurement support


• User-friendly interface with high-resolution color display


• Field-deployable rugged construction

Typical Applications

• RF signal analysis in communications systems


• Research and development testing


• Field measurement and troubleshooting

Compatibility & Integration PowerSuite one-button RF power measurement functionality is included as standard.