The Keysight 10434A is a passive probe designed for oscilloscopes with 50 Ohm inputs. It serves as a modern replacement for legacy HP probe models, including the 10003A, and maintains compatibility across the 10400 Series family. The probe employs a 50 Ohm transmission line architecture to preserve signal integrity while minimizing cable capacitance effects. Input capacitance is kept low through careful design of the probe tip, reducing parasitic loading on the measurement circuit. When paired with a 50 Ohm feed-thru termination, the 10434A can interface with high impedance oscilloscope inputs. This combination of passive design and controlled impedance makes the 10434A suitable for applications requiring accurate signal coupling without active amplification or conditioning.
Technical Specifications
• Transmission line impedance: 50 Ohm
• Input capacitance: Low (stray capacitance at probe tip)
• Input resistance: Low (resistive divider configuration)
• Probe type: Passive
– Key Features
• 50 Ohm transmission line minimizes signal reflections and cable capacitance effects
• Low input capacitance reduces circuit loading
• Passive design eliminates power supply and calibration requirements
• Flexible termination: Direct connection to 50 Ohm inputs or use with 50 Ohm feed-thru termination on high impedance inputs
– Typical Applications
• General-purpose oscilloscope measurements with 50 Ohm terminated instruments
• Signal acquisition on systems with controlled impedance architectures
• Legacy probe replacement in existing measurement setups
– Compatibility & Integration
The 10434A integrates directly with oscilloscopes featuring 50 Ohm input connectors. For use with high impedance oscilloscope inputs, a 50 Ohm feed-thru termination adapter is required. As a member of the 10400 Series family, the probe maintains compatibility with instruments originally specified for legacy HP probe models such as the 10003A.
