The Anritsu 69259A is a synthesized signal generator spanning 0.01 to 26.5 GHz, engineered for RF device characterization, modulator analysis, and EMC testing. It delivers precise output power control from −125 dBm to +17 dBm with ultra-low phase noise (−136 dBc/Hz SSB at 10 GHz). The instrument supports internal AM, FM, phase, and pulse modulation alongside user-downloaded complex waveforms. Step sweep functionality addresses up to 1000 non-sequential frequencies with <15 ms typical switching time, while analog sweep operates across programmable ranges with selectable linear or logarithmic profiles. Alternate sweep mode enables bidirectional frequency sweeping between two independent ranges. Frequency stability is anchored to an internal 10 MHz time base with aging drift <2 × 10⁻⁸/day and temperature coefficient <2 × 10⁻⁸/°C over 0–55 °C. External 10 MHz reference input and output are provided for synchronization with external equipment.
Technical Specifications
• Frequency Range: 0.01 GHz to 26.5 GHz
• Output Power: +17 dBm (maximum), −125 dBm (minimum), with accurate level control
• Phase Noise: −136 dBc/Hz SSB at 10 GHz carrier
• Modulation: Internal AM, FM, phase, and pulse modulation; supports downloaded complex waveforms; 7 internal modulating waveforms including Gaussian noise
• Pulse Modulation: Doublet, triplet, and quadruplet pulse formats for RADAR testing; external or internal pulse generator control; simultaneous synchronized modulations
• Step Sweep: 1 to 10,000 steps; 1 kHz to full range step size (0.1 Hz with Option 11); dwell time 1 ms to 99 seconds; up to 1000 stored non-sequential frequencies; typical switching time <15 ms + 1 ms/GHz or <40 ms maximum
• Analog Sweep: 1 MHz to full range width; linear or logarithmic profiles
• Frequency Accuracy & Stability: ±2 × 10⁻⁸/day aging (±5 × 10⁻¹⁰/day with Option 16); ±2 × 10⁻⁸/°C temperature coefficient over 0–55 °C (±2 × 10⁻¹⁰/°C with Option 16)
• Time Base: Internal 10 MHz; external 10 MHz reference input; 0.5 V p-p reference output into 50 Ω AC coupled
– Key Features
• CW, step sweep, and analog sweep modes
• Alternate sweep between two independent frequency ranges with different power levels
• Phase-locked frequency agility with volatile memory storage
• Low phase noise architecture for sensitive receiver and component testing
– Typical Applications
• RF and microwave device evaluation
• Modulator analysis and characterization
• Electromagnetic compatibility (EMC) testing
• RADAR blind spot and pulse modulation testing
– Compatibility & Integration
External 10 MHz reference input accommodates synchronization with precision frequency standards and system-level timing infrastructure.
