HP / Agilent 83731A Synthesized Signal Generator, 1-20 GHz
HP / Agilent RF Signal Sources. Frequency range: 1 GHz to 20 GHz, Resolution: 1 kHz standard, Resolution: 0.01 dB.
- Model
- HP / Agilent 83731A
- Calibration
- Available on request
- Price
- $6,444
- Status
- In stock
- RFQ ref
- 83731A
This unit
The HP/Agilent 83731A is a synthesized signal generator delivering precise microwave signal generation across 1 GHz to 20 GHz. Built for aerospace, defense, and telecommunications testing, this instrument combines wide frequency coverage with fast switching, exceptional spectral purity, and flexible modulation modes to characterize complex RF and microwave components and systems.
Technical Specifications Frequency Generation
Frequency range: 1 GHz to 20 GHz
Frequency resolution: 1 kHz standard; Option 1E8 provides 1 Hz resolution
Switching time: +14 dBm across 1–20 GHz
With Option 1E1 (90 dB step attenuator): +13 dBm (0.01–1 GHz), +11 dBm (1–18 GHz), +10 dBm (18–20 GHz)
Level resolution: 0.01 dB
Level accuracy: ±1.0 dB typical across frequency and power range
User level correction available for distant test port compensation Spectral Performance
Harmonics: <−55 dBc
Subharmonics: Eliminated
Spurious signals: <−60 dBc
Phase noise: −103 dBc/Hz @ 10 kHz (500 MHz), −91 dBc/Hz @ 10 kHz (2 GHz), −73 dBc/Hz @ 10 kHz (18 GHz); floor 80 dB, rise/fall 3 MHz, delay −419 to +419 ms (free-run) or 225 ns–419 ms (triggered)
FM: Rates 1 kHz to >1 MHz; deviation 10 MHz pk (2–20 GHz), 5 MHz pk (1–2 GHz); modulation index >300
AM (logarithmic): Depth >60 dB, sensitivity −10 dB/V, step response <5 µs for 50 dB step
Analog modulation standard Broadband Noise Improved low broadband noise performance; suitable as local oscillator for HP 8970B noise figure meter.
Key Features
Internal multimode pulse generator with triggered, doublet, and gated burst support
Minimum pulse parameter resolution: 25 ns
FM and AM fully independent of pulse modulation
AM depth and bandwidth available at any pulse rate or width
Typical Applications
Aerospace and defense component characterization
Telecommunications system testing
Microwave component and subsystem validation
Noise figure measurement and LO applications
Compatibility & Integration
HP-IB programmability for all front panel functions
SCPI compliant; IEEE 488.2-1987 compatible
External reference input supported
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 1 GHz to 20 GHz | Power Range (dBm): '+10 dBm to +20 dBm |
HP / Agilent 83731A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the HP / Agilent 83731A. 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 83731A 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 83731A price
This HP / Agilent 83731A is listed at $6,443.8. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
HP / Agilent 83731A calibration cost
NIST-traceable calibration for the HP / Agilent 83731A 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 →
