The Agilent/Keysight 8755A is a precision detector plug-in module for the 180 series oscilloscope mainframe, functioning as a swept amplitude analyzer for RF and microwave signal characterization. It delivers absolute power measurement and signal ratio analysis across a wide frequency spectrum with 60 dB dynamic range.
Technical Specifications
• Frequency Range: 15 MHz to 18 GHz
• Detector Type: Thin-Film Hybrid HP 11664A detectors (three required)
• Input Channels: Three
• Sensitivity: −50 dBm
• Dynamic Measuring Range: 60 dB
• Internal Architecture: Per-channel filters and logarithmic amplifiers
– Key Features
• Absolute power measurement capability at each detector element
• Direct ratiometric display of two detected signals in dB across full dynamic range
• Three parallel detection channels for simultaneous multi-point acquisition
• Logarithmic amplification ensures precise measurement of both low-level and mid-range signals
• Per-channel filtering provides signal conditioning and spurious rejection
– Typical Applications
• Transmission and reflection characterization of RF and microwave components
• Swept frequency analysis to identify performance variations across the operating band
• Design verification and performance validation against specification limits
• Rapid assessment of component behavior from 15 MHz through 18 GHz
– Compatibility & Integration
The 8755A operates exclusively as a plug-in module within Agilent/Keysight 180 series oscilloscope mainframes. Three HP 11664A thin-film hybrid detectors are required for full operation. The module integrates with the host mainframe’s sweep and display functions to enable real-time swept amplitude measurements.
