The Marconi IFR Aeroflex 6844 is an integrated RF and microwave analyzer combining a synthesized source, three-input scalar analyzer, and spectrum analyzer in a single instrument. It delivers precise signal characterization across 10 MHz to 24 GHz, with scalar measurement capability extended to 30 GHz and waveguide mixer extension to 110 GHz. The platform supports simultaneous insertion and return loss measurement, real-time transmission line fault location at 0.1% accuracy, and optional group delay analysis. A full-range tracking generator enables network characterization of passive and active components.
– Technical Specifications
Frequency Coverage
• Scalar analyzer: 10 MHz to 24 GHz (usable to 30 GHz)
• Spectrum analyzer: Up to 24 GHz
• Extendable to 110 GHz with external waveguide mixers
Synthesized Source
• Frequency resolution: 1 Hz
• RF output: Typically up to +13 dBm; minimum guaranteed +8 dBm under specified conditions
• High-power output option available from 3 to 24 GHz (Option 30)
• Harmonic suppression: Typically better than -55 dBc
• Step attenuators for low-power output control
• CW mode for LO substitution; power sweep for gain compression testing
• Internal FM modulation option; external FM input via rear panel
Scalar Analyzer
• EEPROM-corrected detectors ensure measurement accuracy
• High dynamic range for precision network analysis
• Tuned input for rejecting interfering signals
• Simultaneous offset tracking on network measurements
• Real-time transmission line fault location with 0.1% accuracy
• Group delay option for simultaneous amplitude and delay display
• Autotest capability for return loss measurement
Spectrum Analyzer
• Resolution bandwidth filters: 3 MHz to 1 kHz
• Instantaneous dynamic range: >80 dB
• Excellent 3rd order intermodulation intercept
• Full-range tracking generator with offset tracking
– Key Features
• Single-instrument integration of source, scalar analyzer, spectrum analyzer, and group delay measurement
• Offset tracking simplifies mixer, upconverter, and downconverter characterization
• Carrier ON/OFF control for modulation testing
• EEPROM detector correction for long-term measurement stability
– Typical Applications
• Component and subsystem RF/microwave characterization
• Transmission line fault location
• Amplifier gain compression and intermodulation testing
• Active and passive network analysis
• Frequency response and group delay measurement
– Compatibility & Integration
Applications interface supports system integration. High-power output option extends dynamic range for demanding measurement scenarios.
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