Keysight / Agilent / HP 5086-7781 Oscillator for 8561B Portable Spectrum Analyzer
The Keysight/Agilent/HP 5086-7781 is an oscillator module designed for use in the 8561B Portable Spectrum Analyzer. This oscillator is a critical component responsible for generating the stable and accurate signals necessary for the spectrum analyzer's proper functioning. It ensures precise frequency control and signal purity, which are essential for accurate spectrum analysis.
- Model
- Keysight / Agilent / HP 5086-7781
- Calibration
- Available on request
- Price
- $850
- Status
- In stock
- RFQ ref
- 5086-7781
This unit
The Keysight/Agilent/HP 5086-7781 is a YIG-tuned oscillator (YTO) engineered as a critical local oscillator for the 8561B Portable Spectrum Analyzer and compatible 856-series instruments. This oscillator generates highly stable, tunable microwave frequencies spanning 3.0 – 7.0 GHz, delivering the precise frequency control and signal purity required for accurate spectrum analysis across demanding RF and microwave testing environments.
Technical Specifications
Oscillator Type: YIG-tuned oscillator (YTO)
Frequency Range: 3.0 – 7.0 GHz
Frequency Stability: High stability design with low phase noise for clear signal resolution
Construction: Durable, thermally stable materials
Connector Interface: 9-pin connector
Power Supply: Designed for compatible spectrum analyzer systems
Key Features
Generates highly stable and tunable microwave frequencies
Ensures precise frequency control and consistent measurement results
Low phase noise performance for high-resolution signal clarity
Rugged construction rated for professional testing environments
Optimized thermal stability for reliable long-term operation
Typical Applications
RF and microwave spectrum analysis
Frequency-dependent signal measurements
Laboratory and field-based spectrum characterization
Advanced RF testing environments requiring frequency accuracy and signal purity
Compatibility & Integration The 5086-7781 integrates with the following spectrum analyzer models:
HP 8561B Portable Spectrum Analyzer (primary)
HP 8560A
HP 8561A
HP 8562A
HP 8562B
HP 8563A
856XA/B series instruments
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 3.0 – 7.0 GHz |
Keysight / Agilent / HP 5086-7781 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Keysight / Agilent / HP 5086-7781. 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 / HP 5086-7781 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 / HP 5086-7781 price
This Keysight / Agilent / HP 5086-7781 is listed at $850. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Keysight / Agilent / HP 5086-7781 calibration cost
NIST-traceable calibration for the Keysight / Agilent / HP 5086-7781 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 →
