The Agilent/Keysight 85662A IF Display Section is the display and signal processing module for the 8566B Spectrum Analyzer family. This component receives intermediate frequency signals from the RF section, processes them via internal micro-computer control, and renders measurement data on an LCD display. It delivers a calibrated 90 dB display range with amplitude measurements spanning +30 dBm to −135 dBm, making it suitable for precision signal characterization across baseband through microwave frequencies.
Technical Specifications
• Signal Processing: Intermediate frequency (IF) signal processing and display
• Amplitude Range: +30 dBm to −135 dBm
• Calibrated Display Range: 90 dB
• Internal Memory: 16 Kbytes user RAM for trace data, instrument states, and downloadable programs
• Display Type: LCD option available
• Processor: Internal micro-computer for automated control and operational functions
• Shipping Weight: 15 lbs/ea
– Key Features
• Modular integration into the 8566B Spectrum Analyzer system
• Direct interconnection with 85660B RF Section via dedicated cables
• Automated measurement capabilities with programmable memory storage
• Extended measurement capability when paired with external RF amplification and mixer options
– System Integration
The 85662A forms the display and control backbone of the 8566B Spectrum Analyzer, which covers 100 Hz to 2.5 GHz in baseband and 2 GHz to 22 GHz in preselected microwave bands. External mixers enable operation to 110 GHz (11970 Series) or 325 GHz (alternate commercial mixers). The 8449B microwave preamplifier (1 to 26.5 GHz) augments sensitivity when required.
– Compatibility & Integration
• Primary System: Keysight 8566B Spectrum Analyzer
• Compatible Spectrum Analyzer Platforms: 8566A/B, 8567A/B, 8568A/B
• RF Section: Keysight 85660B
• Optional Enhancements: 8449B microwave preamplifier, 11970 Series preselected mixers
• Accessory Support: EMI measurement software and full test accessory line
• Documentation: Dedicated troubleshooting and repair manuals available

















