Agilent / HP E4433A 250 kHz to 4 GHz Digital RF Signal Generator W OPTIONS
Agilent / HP E4433A,"A digital RF signal generator with frequency coverage from 250 kHz to 4 GHz. Offers vector modulation, internal baseband generation, and low phase noise. Ideal for wireless communications testing. Enables real-world signal emulation for product validation. Supports automated test systems via remote interfaces like GPIB and RS-232."
- Model
- Agilent / HP E4433A
- Calibration
- Available on request
- Price
- $3,930
- Status
- In stock
- RFQ ref
- E4433A
This unit
The Agilent/HP E4433A is a digital RF signal generator spanning 250 kHz to 4 GHz, engineered for wireless communication testing, digital receiver validation, and component characterization. This instrument delivers modulation accuracy and stability critical for sensitive receiver testing, with output levels ranging from +13 dBm to -136 dBm depending on frequency band. The E4433A supports analog I/Q inputs for complex modulation formats including BPSK, QPSK, and 16QAM via an internal quadrature modulator with 10 MHz bandwidth.
Digital modulation options enable standards-based testing: DECT, GSM, NADC, PDC, PHS, and TETRA. Frequency resolution of 0.01 Hz and 0.02 dB level resolution enable precise stimulus generation. Multiple timebase stability options - standard at <±2 ppm/yr or Option 1E5 at <±0.1 ppm/yr - accommodate exacting frequency accuracy requirements.
The instrument supports external reference inputs at 1, 2, 5, or 10 MHz and provides a 10 MHz timebase reference output. Analog modulation includes AM (wideband with 80 dB on/off ratio to 3 GHz. Optional baseband I/Q generators (UN3 with 1 Mbit RAM or UN4 with 8 Mbit RAM) incorporate premodulation filtering and PRBS generation for advanced signal synthesis.
Technical Specifications
- Frequency Range: 250 kHz to 4 GHz
- Output Level: +13 dBm to -136 dBm (frequency dependent)
- Level Resolution: 0.02 dB
- Level Accuracy (CW): ±0.5 dB (+7 to -127 dBm); ±1.5 dB to ±2.5 dB below -127 dBm
- Level Accuracy (Digital Modulation): ±0.5 dB typical (ALC on)
- Frequency Resolution: 0.01 Hz
- Reference Oscillator Stability: <±2 ppm/yr standard; <±0.1 ppm/yr with Option 1E5
- Temperature Stability: <±1 ppm standard; 80 dB (≤3 GHz); >60 dB (>3 GHz)
- Wideband AM Distortion: <1.5% THD (30% AM); 0.35 Vrms into 50 Ω
- Internal modulation sources: FM, Sine (0.1 Hz to 50 kHz), Square, Ramp, Triangle
- High stability option for frequency-critical applications
- Optional baseband I/Q generators with premodulation filtering
Typical Applications
- Digital receiver testing and validation
- RF component characterization
- Local oscillator generation
- Standards-based wireless signal simulation
- Modulation accuracy verification
Compatibility & Integration External reference input impedance: 50 Ω. I/Q modulation bandwidth: 10 MHz (1 dB).
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 250 kHz to 4 GHz | Power Range (dBm): '+13 dBm to -136 dBm | Voltage / Current Range: 10 MHz reference output: >0.35 Vrms into 50 Ω |
Agilent / HP E4433A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / HP E4433A. 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 Agilent / HP E4433A 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.
Agilent / HP E4433A price
This Agilent / HP E4433A is listed at $3,930. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / HP E4433A calibration cost
NIST-traceable calibration for the Agilent / HP E4433A 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 →
