Agilent/Keysight 85103D

The Agilent/Keysight 85103D is a performance upgrade package that transforms the 8510B network analyzer into an 8510C-equivalent instrument. This upgrade delivers faster measurements, enhanced display capabilities, and advanced analytical functions for precise S-parameter characterization of RF and microwave components. The 85103D enables three times faster measurement speeds and unlocks firmware-based features including power sweep, receiver calibration, and time-domain analysis with improvements of two to sixteen times over baseline performance.

Technical Specifications

• Frequency range: 45 MHz to 110 GHz (depending on test set and synthesizer configuration)


• Receiver dynamic range: 86 dB to over 106 dB (band and configuration dependent)


• Time domain measurement speed: 2× to 16× faster than baseline


• Error-correction speed: 25% improvement


• Display: 16-color high-resolution screen


• Storage: 3.5-inch disk drive


• On-screen markers: Five readout positions

Key Features

• Measurement speed increase of 3× compared to 8510B baseline


• Simultaneous four S-parameter display for streamlined analysis


• Power sweep functionality for device characterization under variable power levels


• Receiver calibration for improved nonlinear measurement accuracy


• Limit lines for automated pass/fail testing criteria


• Dissimilar connector compensation


• Full-color printer compatibility


• Measurement buffering for plots and printouts


• Internal real-time clock for timestamped data logging


• Enhanced printed data listings

Typical Applications

• RF and microwave component characterization


• S-parameter measurements for device behavior analysis


• Nonlinear device testing with receiver calibration


• Time-domain reflectometry and impulse response measurement


• Automated production testing with limit line functionality

Compatibility & Integration The 85103D upgrade integrates with Agilent/Keysight 8510 series network analyzers, specifically upgrading the 8510B to 8510C performance specifications. Frequency coverage extends based on the paired test set and synthesizer configuration.