The Marconi IFR Aeroflex 6813 is a synthesized signal generator delivering RF and microwave signals from 10 MHz to 20 GHz with 1 Hz frequency resolution. It provides precise output control across -110 dBm to +20 dBm with 0.01 dB resolution, supporting CW, frequency sweep, power sweep, FM, and pulse modulation modes. The instrument integrates internal filtering for harmonic suppression below -50 dBc and includes list mode capability for storing up to 1024 frequency sequences. Pulse modulation achieves >40 dB on/off ratio with rise times under 10 µs, while FM modulation spans 0.1 Hz to 500 kHz with 20–400 kHz deviation range. Ideal for component characterization, receiver testing, and system-level RF validation.
Technical Specifications
Frequency Performance
• Frequency range: 10 MHz to 20 GHz
• Frequency resolution: 1 Hz across full band
• CW accuracy: (Frequency Standard error × Frequency) ± 10 Hz
Output Power
• Power range: -110 dBm to +20 dBm (settable)
• Leveled power range: -10 dBm to +10 dBm (10 MHz to 20 GHz)
• Power resolution: 0.01 dB
• Calibrated output: >+14 dBm typical
• Power sweep range: >20 dB without attenuator
Modulation & Sweep
• Modes: CW, synthesized sweep, frequency list, CW power sweep
• FM: Internal sine-wave source, 0.1 Hz to 500 kHz; deviation 20–400 kHz (±5% ± 1 Hz accuracy at 1 kHz)
• Pulse: >40 dB on/off ratio; rise time <10 µs; up to 256 width/PRI pairs
• Amplitude modulation: 99.9% depth; 0.1% resolution
• List mode: 1024 stored frequencies; forward/reverse operation; trigger modes include internal continuous, single-step, RS-232, and external trigger
Signal Quality
• Harmonics: <-50 dBc internal filtering
• Source harmonics (pulse modulation): <-40 dBc (50–375 MHz), <-50 dBc (375 MHz–24 GHz)
• Phase noise: Re-qualified performance across modulation bandwidth
– Typical Applications
• Component and receiver characterization
• System integration testing
• Frequency and power sweep validation
• Pulse and modulated signal generation
