The Marconi IFR Aeroflex 3414 is a digital RF signal generator spanning 250 kHz to 4 GHz, engineered for testing, development, and maintenance of RF communication systems. It delivers precise frequency synthesis with 1 Hz resolution and exceptional spectral purity, supported by multiple modulation modes—analog (AM/FM/ΦM), vector, and optional pulse and arbitrary waveform generation. The instrument combines high output power capability with advanced phase noise performance and flexible RF optimization to meet demanding requirements across RF applications.
Technical Specifications
Frequency Performance
• Range: 250 kHz to 4 GHz
• Resolution: 1 Hz
• Accuracy: As frequency standard
• Carrier phase control: ±0.036° increments
• Residual FM: Typically 1.5 Hz at 1 GHz
RF Output
• Peak output power: +16 dBm
• Output range (electronic attenuator): −140 to +16 dBm
• Output range (mechanical attenuator): −140 to +19 dBm
• Output range (no attenuator): 0 to +20 dBm
• Level resolution: 0.01 dB
• Harmonics: <−30 dBc; typically <−40 dBc at output levels ≤+7 dBm
• RF leakage: −121 dBc/Hz at 20 kHz offset (1 GHz carrier)
• Phase noise optimization: >10 kHz offset
Modulation Capabilities
• Analog modulation (AM/FM/ΦM): Up to 30 MHz bandwidth (AM), 20 MHz (FM)
• Combined modulation: Internal and external sources simultaneously enabled
• Vector modulation: Up to 55 MHz bandwidth with low-distortion digital modulation
• Modulation oscillator: Internal, 0.1 Hz to 50 kHz; sine, square, triangular, sawtooth waveforms
• Pulse modulation: Optional (Option 003); not available with Option 009
• Arbitrary waveform generator: Optional dual-channel with pre-stored IQ waveforms; continuous, single, or triggered operation; external TTL trigger input; up to 3 marker bits per sample (HC CMOS outputs)
• Differential I/Q outputs: Optional (Option 005); not available with Option 006
RF Optimization Modes
• Auto, Low Noise, Low ACP, Higher Power
– Key Features
• Wide frequency range with 1 Hz resolution and frequency-standard accuracy
• Four selectable output power ranges with electronic and mechanical attenuation
• Superior phase noise performance optimized for offset frequencies >10 kHz
• Flexible modulation architecture supporting analog, vector, and pulse modes
• Optional arbitrary waveform and real-time baseband generation
• Four RF optimization modes for application-specific performance tuning
– Typical Applications
• RF communication system testing and validation
• Digital modulation signal generation with low adjacent-channel distortion
• Phase noise characterization and low-noise signal synthesis
• Pulse and vector modulation testing
• Development and maintenance of broadband RF receivers and transmitters
– Compatibility & Integration
The 3414 supports optional differential I/Q output (Option 005) for simplified component test interfacing and optional pulse modulation (Option 003). Arbitrary waveform and real-time baseband capabilities enable custom signal generation with marker outputs for test synchronization.
