HP / Agilent 83751A Synthesized Sweeper, 2 – 20 GHz
HP / Agilent RF Signal Sources. Frequency Range: 2 GHz to 20 GHz with 1 Hz resolution, Resolution: 0.01 dB settable.
- Model
- HP / Agilent 83751A
- Calibration
- Available on request
- Price
- $4,500
- Status
- In stock
- RFQ ref
- 83751A
This unit
The HP/Agilent 83751A Synthesized Sweeper generates precise RF signals across 2 to 20 GHz with 1 Hz frequency resolution and synthesized accuracy. It combines the stability of a synthesizer with analog sweep speed, enabling rapid component characterization and scalar network analysis. The instrument supports multiple sweep modes
CW, stepped, ramp (analog/digital), marker, alternate, and power sweep - plus AM, FM, and pulse modulation.
Internal or external ALC maintains output power accuracy across temperature and frequency variations. GPIB control with SCPI and HP 8350 command compatibility enables direct integration into automated test systems.
Technical Specifications
- Frequency Range: 2 GHz to 20 GHz with 1 Hz resolution
- Output Power: +10 dBm maximum leveled (83751A); -15 dBm minimum (-85 dBm with Option 1E1)
- Output Impedance: 50 ohms; Precision 3.5 mm connector standard
- Harmonic Distortion: Typically < -30 dBc to 10 GHz; < -25 dBc above 10 GHz
- Timebase Stability: ±10 ppm (standard 10 MHz); ±1 × 10⁻¹⁰/°C (Option 1E5)
- Modulation: AM, FM, Pulse
- Sweep Modes: CW, stepped, ramp, marker, alternate, power sweep
- Markers: Up to ten frequency markers per sweep range
- Operating Temperature: 0 to 55 °C
Key Features
- Internal and external ALC for stable power delivery
- Sweep output (BNC) provides 0 to +10 V proportional voltage for external control
- 10 MHz reference input/output (50 ohm, -5 to +10 dBm)
- Optional Type N connector (1ED) or rear-panel RF output (1E4)
- Dual-instrument synchronous tracking via 10 MHz reference
- Phase noise resolution: 0.01 dB settable; 0.1 dB display
Typical Applications
- Component and filter characterization across microwave bands
- Swept S-parameter measurements with scalar analyzers
- Noise figure assessment with external detectors
- ATE system integration for production test
Compatibility & Integration
- GPIB (IEEE-488.1/488.2) with SCPI and HP-II3 programming
- Compatible with Agilent 8757A/C/D/E scalar analyzers and 8970B noise figure meters
- 83550-series external module support
- Backward compatible with legacy HP 8350 sweeper mnemonics
- Power: 90-264 VAC, 50-60 Hz; maximum 400 VA
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 2 GHz to 20 GHz | Power Range (dBm): '+10 dBm maximum leveled (83751A) |
| -15 dBm minimum (-85 dBm with Option 1E1) | Voltage / Current Range | 198-264 VAC (50-60 Hz or 400 Hz) |
HP / Agilent 83751A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the HP / Agilent 83751A. 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 HP / Agilent 83751A 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.
HP / Agilent 83751A price
This HP / Agilent 83751A is listed at $4,500. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
HP / Agilent 83751A calibration cost
NIST-traceable calibration for the HP / Agilent 83751A 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 →
