Agilent – Keysight E4422A 4 GHZ Signal Generator, Option 1E5

The Agilent/Keysight E4422A is an analog and vector signal generator operating from 250 kHz to 4 GHz, engineered for RF testing across wireless, aerospace, and defense applications. It delivers output power from -130 dBm to +20 dBm with ±0.5 dB accuracy and phase noise better than -116 dBc/Hz at 1 GHz (20 kHz offset). The instrument supports AM, FM, and PM analog modulation alongside complex digital formats including QPSK and QAM via vector modulation.

Option 1E5 adds enhanced digital modulation schemes, extended signal impairment simulation, and improved amplitude and frequency stability. Frequency, power, list, and manual sweep capabilities enable flexible signal generation with 0.1 Hz resolution and sub-50 ms settling time. RF bandwidth reaches 30 MHz for vector modulation, while harmonic performance stays below -35 dBc (below 2 GHz) and -30 dBc (above 2 GHz).

Residual distortion remains under 0.1% AM and 1 MHz FM.

Technical Specifications

• Frequency Range: 250 kHz to 4 GHz


• Output Power: -130 dBm to +20 dBm (adjustable)


• Power Accuracy: ±0.5 dB at 25°C


• Frequency Resolution: 0.1 Hz


• Phase Noise: Better than -116 dBc/Hz at 1 GHz, 20 kHz offset (+10 dBm output)


• Harmonics: Better than -35 dBc (below 2 GHz), -30 dBc (above 2 GHz, +10 dBm)


• Non-Harmonic Spurious: Below -60 dBc


• RF Bandwidth (Vector Modulation): Up to 30 MHz


• Settling Time: Typically less than 50 ms


• Residual AM/FM: Below 0.1% AM and 1 MHz FM


• Power Supply: 100-240 VAC, 50/60 Hz


• Power Consumption: Typically under 400 VA


• Dimensions: 2U rack height, 1/2 rack width


• Weight: Approximately 18 kg

Key Features

• Analog modulation: AM, FM, PM with user-definable parameters


• Vector modulation supporting QPSK, QAM, and other digital formats with customizable I/Q data


• Frequency, power, list, and manual sweep modes


• Internal modulation generator with standard waveforms


• Option 1E5 enhances vector signal generation and stability control

Typical Applications

• Receiver performance evaluation in wireless systems


• Complex signal simulation for aerospace and defense testing


• Real-world signal impairment and interference scenario modeling

Compatibility & Integration

• RF Output: Type N female connector


• Modulation Input: BNC female


• Rear interfaces: GPIB (IEEE 488.2), LAN (Ethernet), Trigger Input/Output (BNC), External Reference Clock Input/Output (BNC)


• SCPI-compatible control interface