The Anritsu 69245A is a synthesized signal generator delivering precise RF signal generation across 0.5 to 20.0 GHz. Built for demanding RF component testing, system integration, and advanced R&D, the instrument combines high spectral purity with exceptional frequency stability and accuracy. Its synthesized architecture supports repeatable, traceable measurements in applications requiring phase noise control and fast frequency agility.
Technical Specifications
Frequency Performance
• Frequency range: 0.5 to 20.0 GHz
• Frequency resolution: 1 kHz standard; 0.1 Hz with Option 11
• Output impedance: 50 Ω
• Frequency switching time: <40 ms to within 1 kHz of final frequency
• Step sweep switching: <15 ms + 1 ms/GHz step size, or <40 ms maximum
Spectral Purity & Stability
• SSB phase noise: -100 dBc at 10 kHz offset from 10 GHz (typical)
• Internal timebase aging: <2 × 10⁻⁸ per day
• Temperature stability: <2 × 10⁻⁸ per °C (0°C to 55°C)
• Option 16 enhanced stability: <5 × 10⁻¹⁰ per day; <2 × 10⁻¹⁰ per °C
Modulation & Sweep
• Internal modulation: AM, FM, phase modulation (ØM), and pulse
• User-downloadable complex modulation supported
• Sweep modes: CW, step sweep, analog sweep, manual sweep
• Step sweep dwell time: 1 ms to 99 seconds per step
• Alternate sweep: Between two ranges with independent power levels
• Phase-locked sweep: Frequency adjustment between sweep limits
Reference & Control
• 10 MHz reference output: 0.5 V p-p into 50 Ω, AC coupled (rear-panel BNC)
• GPIB interface for remote operation
– Key Features
• Rapid frequency switching enables high-speed test sequences
• Selectable step counts or step sizes for flexible sweep profiles
• Phase-locked sweep maintains coherent frequency transitions
• Ultra-low phase noise specification supports sensitive receiver and component characterization
• 10 MHz reference output enables external synchronization
– Typical Applications
• RF component validation and characterization
• System-level integration testing
• Phase noise measurements and analysis
• Receiver sensitivity and intermodulation testing
• Frequency-agile signal sourcing for radar and communications
– Compatibility & Integration
GPIB control enables integration into automated test systems. The 50 Ω output impedance matches standard RF test configurations. External frequency reference synchronization is supported via the rear-panel 10 MHz output.
