Agilent / Keysight 83484A Dual channel 50 GHz electrical module

The Agilent/Keysight 83484A is a dual-channel 50 GHz electrical module for high-speed signal acquisition and characterization in the frequency domain. It delivers low-noise measurements across DC to 50 GHz, with selectable 26.5 GHz bandwidth for optimized noise performance. The module accepts ± 2 Vdc maximum input on dual 50 ohm channels via 2.4 mm connectors, making it suitable for communication and radar component testing.

Technical Specifications

• Measurement Bandwidth: DC to 50 GHz (standard); DC to 26.5 GHz (selectable)


• RMS Noise: 0.46 mV at 26.5 GHz bandwidth; 0.75 mV or 1.5 mV at 50 GHz bandwidth


• Maximum Input Signal: ± 2 Vdc


• Nominal Impedance: 50 ohm


• Electrical Input Connector: 2.4 mm (m)

Trigger Specifications

• Limited Mode: DC to 100 MHz


• Normal Mode: DC to 2.5 GHz; minimum sensitivity 40 mVpp at 100 MHz to 200 mVpp at 2.5 GHz; trigger jitter < 2.5 ps rms + 5E-5×delay


• High Speed Mode (Option 100): 2.0 GHz to 12 GHz (1 GHz to 15 GHz typical); 200 mVpp sensitivity; trigger jitter < 2 ps rms for delays under 100 ns (typical 1.3 ps)


• Trigger Level Range: ± 1 V


• Maximum Trigger Signal: < 2 V dc + ac peak (+16 dBm) for both modes

Key Features

• Dual independent electrical channels for simultaneous multi-point measurements


• Selectable bandwidth optimizes noise performance for specific measurement requirements


• Multiple trigger modes accommodate DC to 12 GHz signal characterization


• Sub-2 ps trigger jitter in high-speed mode enables precise timing analysis


• 2.4 mm connectors support standard RF test configurations

Compatibility & Integration The 83484A integrates with Keysight DCA mainframes: 83480A Digital Communications Analyzer, 86100A/B Infiniium DCA, 86100C Infiniium DCA-J, and 86100D Infiniium DCA-X. Status: Obsolete product.