Keysight (Agilent) E4400A Analog RF Signal Generator, 250 kHz to 1000 MHz
Keysight / Agilent RF Signal Sources. Model: E4400A.
- Model
- Keysight / Agilent E4400A
- Calibration
- Available on request
- Price
- $1,100
- Status
- In stock
- RFQ ref
- E4400A
This unit
The Keysight (Agilent) E4400A is an analog RF signal generator delivering precise signal generation from 250 kHz to 1000 MHz. Built for receiver testing, component characterization, and local oscillator applications, this instrument combines reliable performance with excellent spectral purity and flexible modulation capabilities.
Technical Specifications
Frequency coverage spans 250 kHz to 1000 MHz with 10.0 mHz resolution. Frequency switching completes in <35 ms (modulation off) or 17 dB hold level with <25 ms switching speed (<210 ms with power search enabled). Output impedance is 50 ohms. Spectral purity defines this generator's performance. SSB phase noise measures <-120 dBc/Hz at 20 kHz offset (500 MHz) and <-116 dBc/Hz (1000 MHz). Residual FM in CW mode stays below 2 Hz or 4 Hz depending on phase noise selection. SWR remains <1.4:1 across the frequency range. The instrument integrates wideband FM and phase modulation with a built-in function generator. Step sweep functionality covers frequency, power, and list modes with dwell times from 2 ms to 60 sec and up to 401 sweep points. The standard internal reference oscillator exhibits ±2 ppm/yr aging and ±1 ppm temperature stability. External reference inputs accept 1, 2, 5, or 10 MHz signals (±10 ppm typ.), and a 10 MHz timebase output is provided.Key Features
- Electronic attenuator for enhanced reliability and repeatability
- Fast frequency and amplitude switching for dynamic test scenarios
- Reverse power protection rated 50 Watts max; max DC voltage 50 V
- Flexible sweep engine with configurable dwell and point density
Typical Applications Receiver sensitivity and selectivity testing, RF component validation, local oscillator substitution, and production throughput optimization.
Compatibility & Integration Related models include the Agilent E4425B, E4420B, and HP ESG series (1000A, 2000A, 3000A, 4000A). Note: This is an obsolete product; the N5171B EXG X-Series RF analog signal generator is the current replacement.
Keysight / Agilent E4400A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Keysight / Agilent E4400A. Calibration covers output frequency accuracy, output power level accuracy across the full frequency range, AM/FM/PM/pulse modulation accuracy, harmonic and spurious output levels, and phase noise floor verification. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Keysight / Agilent E4400A faults: YIG oscillator failure (no output or loss of lock), step attenuator wear (output drops or steps at set attenuation), ALC loop failure (uncontrolled output power), I/Q modulator assembly failure. HP/Agilent 836xx series most common faults are YIG oscillator failure and step attenuator contact wear causing output steps or drops at specific attenuation settings. Keysight E4428C/E4438C units most commonly develop ALC loop failure and I/Q modulator assembly faults. YIG oscillator replacement and attenuator service are stocked repairs.
Keysight / Agilent E4400A price
This Keysight / Agilent E4400A is listed at $1,100. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Keysight / Agilent E4400A calibration cost
NIST-traceable calibration for the Keysight / Agilent E4400A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers output frequency accuracy, output power level accuracy across the full frequency range, AM/FM/PM/pulse modulation accuracy, harmonic and spurious output levels, and phase noise floor verification. Turnaround is 1 to 3 business days after receipt. See full calibration details →
