Keysight (Agilent) MX0104A Performance Verification and Deskew Fixture for InfiniiMax Probes

The Keysight MX0104A Performance Verification and Deskew Fixture is a specialized accessory for calibrating, deskewing, and verifying the performance of InfiniiMax probe amplifiers. This 50 Ohm through fixture maintains signal integrity across high-speed measurement applications and is the direct replacement for the N5443A model.

Technical Specifications

• Impedance: 50 Ohm through fixture


• Frequency Range: Good signal integrity to 40 GHz


• Input Connector: 2.92 mm male


• Output Connector: 3.5 mm male

Key Features The MX0104A enables three critical functions for InfiniiMax probe systems: calibration of probe amplifiers, deskewing of probe amplifiers, and performance verification via Vector Network Analyzer (VNA) testing. The fixture itself is a 50 Ohm through device, providing a known impedance reference for measurement validation. Two positioning options support different calibration workflows. The optional plastic stand (Option 001) offers economical probe head positioning for standard setups. The 3D probe positioner (Option N2787A) delivers enhanced positioning flexibility, particularly for complex probe head geometries such as browser probe heads.

Typical Applications This fixture is essential for maintaining measurement accuracy in high-speed digital and analog characterization. Engineers use it to validate probe performance, compensate for phase and amplitude errors through deskewing, and ensure consistent calibration across InfiniiMax probe systems. Verification procedures typically employ external VNA equipment for comprehensive S-parameter characterization.

Compatibility & Integration The MX0104A supports InfiniiMax probe amplifiers with bandwidths greater than 13 GHz, including:

InfiniiMax Ultra series probe amplifiers

InfiniiMax III and III+ series probe amplifiers

MX0023A InfiniiMax RC probe amplifier For InfiniiMax probes with bandwidths below 13 GHz, the E2655C fixture is the appropriate alternative. The MX0104A integrates with standard test equipment workflows requiring 2.92 mm and 3.5 mm connectors and 50 Ohm system impedance.