The Marconi IFR Aeroflex 6842 is a three-in-one RF and microwave test instrument combining a synthesized source, scalar analyzer, and spectrum analyzer. It characterizes components and subsystems across a 10 MHz to 8.4 GHz scalar measurement range, with spectrum analysis extending to 20 GHz and optional capability to 110 GHz via external waveguide mixers. The instrument delivers simultaneous insertion loss and return loss measurements, >80 dB dynamic range for filter testing, and spurious measurement performance better than -60 dBc on full-span sweeps.
– Technical Specifications
Frequency Coverage
• Scalar analyzer: 10 MHz to 8.4 GHz
• Spectrum analyzer: 10 MHz to 20 GHz
• Extended range: 110 GHz with external waveguide mixers
• RF synthesizer: 1 MHz to 3 GHz with 1 Hz resolution
• VCO-based generation above 3 GHz
Synthesized Source
• Phase noise: Low (1 Hz frequency resolution)
• Harmonic performance: 80 dB for filter testing
• Compatible with 40 dB directivity autotesters
Spectrum Analyzer
• Resolution bandwidth: 1 kHz to 3 MHz
• Instantaneous dynamic range: >80 dB
• Spurious performance: Better than -60 dBc
• FM demodulation with integrated loudspeaker
• Offset tracking source for frequency translation device measurements
Interfaces & Data Transfer
• IEEE 488.2 GPIB with 401-point transfer in <50 ms typical
• Individual data point readout: 10 ms typical
• RS-232 remote operation interface
• USB for results storage and printing
• 3.5-inch disk drive integrated storage
– Key Features
• Simultaneous insertion loss and return loss display
• Wideband oscillators for high microwave sensitivity
• CW, swept source, and offset tracking source modes
• Modular design for rapid field service
• Applications interface for guided and automatic testing
– Typical Applications
• Component and subsystem RF characterization
• Filter and amplifier testing
• Harmonic and spurious emission measurement
• Network analysis and transmission line diagnostics
• Power sweep gain compression analysis
– Compatibility & Integration
Full GPIB and RS-232 remote control enables integration into automated test systems. Fast data transfer via GPIB or USB supports production environments. Optional autotesters and external waveguide mixers expand measurement capability.
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