The Marconi IFR 2025 is a synthesized signal generator delivering RF signals from 9 kHz to 2.51 GHz with 1 Hz frequency resolution. Built for laboratory, production, and maintenance environments, it combines compact design with rugged construction to support telecommunications, aerospace, and defense applications. Output ranges from -140 dBm to +13 dBm (extendable to +25 dBm with Option 3), with 0.1 dB resolution and excellent spectral purity. Harmonics typically exceed -25 dBc at levels 6 dB below maximum output.
Technical Specifications
• Frequency Range: 9 kHz to 2.51 GHz
• Frequency Resolution: 1 Hz
• Output Power: -140 dBm to +13 dBm; +25 dBm with Option 3
• Power Resolution: 0.1 dB
• Harmonics: Typically better than -25 dBc (6 dB below maximum output)
• Power Consumption: 70 W (standard); 95 W (with Options 3 and 4)
• Reverse Power Protection: Electronic trip; 50 W maximum with VSWR up to 5:1
– Key Features
• Modulation Modes: AM, FM, phase modulation, pulse, and FSK
• Sweep Capability: Logarithmic and linear sweep modes
• Attenuator Hold Function: Eliminates RF level dropouts during step attenuator control
• RF Level Limit: Configurable threshold to protect external sensitive devices
• RF Level Offsets: ±5 dB adjustment capability
• Option 3 (High Power): Extends output to +25 dBm; output uncalibrated above +19 dBm (>1.2 GHz) and above +14 dBm (>2.4 GHz). Reduces maximum by 5 dB with pulse modulation or up to 6 dB with AM depth
• Option 4 (High Stability): OCXO time base; ageing ±2.5 × 10⁻⁷/year, ±5 × 10⁻⁹/day, stability better than ±5 × 10⁻⁸ (0–50°C); 10-minute warm-up to 2 × 10⁻⁷
• Option 7 (Fast Pulse Modulator): Front panel pulse input; -140 dBm to +10 dBm usable to +13 dBm; ±0.01 dB/°C temperature coefficient when enabled
• DC Operation Option: 11 V to 32 V external power source
– Compatibility & Integration
• Interfaces: GPIB and RS-232
