Keysight / Agilent / HP 5086-7781 Oscillator for 8561B Portable Spectrum Analyzer

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