Marconi IFR Aeroflex FS1200 Fast Switching Synthesizer

The Marconi IFR Aeroflex FS1200 is a fast-switching frequency synthesizer engineered for high-speed automated testing, communication systems, and radar applications. Its multi-loop architecture delivers sub-100 microsecond switching performance while maintaining exceptional spectral purity across a wide frequency range. Built from standard RF modules on a common motherboard, the FS1200 enables simplified maintenance and rapid field reconfiguration without calibration adjustments.

– Technical Specifications

Frequency Range: 4.5 MHz to 6.0 GHz

Switching Speed: Less than 100 µsec; less than 5 microseconds between ports

Phase Noise: Typically less than -123 dBc/Hz at 10 kHz offset (2 GHz); greater than -130 dBc/Hz at 10 kHz offset (1.0 GHz)

Output Power: +7 dBm nominal

Output Flatness: ±1.5 dB

Output Isolation: Minimum 25 dB between ports

VSWR: 1.8:1

Step Size: 1 Hz (4.5 MHz to 1999 MHz); 2 Hz (2000 to 3999 MHz); 4 Hz (4000 to 6010 MHz)

Spurious Levels: Typically less than -70 dBc; may exceed -65 dBc. Fixed spurs exist at specific frequencies (1175–1625 MHz range). Spur at 800 MHz may appear at -60 dBc across all carrier frequencies.

External Reference: 10 MHz, 3 dBm ±4 dB, 50 Ohms

Frequency Stability: Equivalent to reference oscillator

MTBF: Exceeds 12,000 hours

– Key Features

• Multi-loop design balancing phase noise with rapid frequency resolution
• Modular RF architecture permitting field component upgrades without realignment
• Hybrid synthesizer topology combining direct and indirect synthesis advantages
• Parallel BCD control interface with remote RF on/off capability
• Standard 10 MHz external reference input for phase-locked operation

– Typical Applications

• Automated test equipment (ATE) for wireless devices
• Communication system validation
• Radar and navigation system testing
• Mobile network device characterization
• Bluetooth product qualification

– Compatibility & Integration

The FS1200 addresses testing requirements for diverse wireless standards and complex modulation schemes. Its deterministic switching and low phase noise suit high-throughput validation of mobile network infrastructure, handheld devices, and emerging wireless protocols.