The Agilent/Keysight CX1203A is a coaxial termination sensor head that enables wideband dynamic current measurements when integrated with Keysight CX1101A and CX1102A current sensors. This accessory connects to the CX3300 Series Device Current Waveform Analyzer and provides the front-end conditioning required for precise current acquisition across a wide dynamic range.
Technical Specifications
• Measurement range: 40 nA to 1 A
• Input series resistance: Switchable between 0 Ω and 50 Ω
• Connector type: SMA coaxial
• Circuit common connection: Negative terminal connected via 10 MΩ resistor to circuit common
• Recommended warm-up period: 30 minutes after connection
– Key Features
• Switchable termination resistance accommodates both high and low impedance measurement configurations
• Coaxial architecture minimizes noise coupling in high-bandwidth current measurements
• High-value common return resistor (10 MΩ) establishes isolated reference to circuit ground
• SMA connectors provide standard RF-grade interconnection
– Included Accessories
• SMA plug to open cable, 50 Ω, 100 mm
• MHF jack straight connector (surface mount), 50 Ω, Ø 2 mm
• SMA plug to MHF plug cable, 50 Ω, 100 mm
• MHF plug short cable, 50 Ω, 21 mm
• MHF pulling tool
– Compatibility & Integration
The CX1203A is designed exclusively for use with the Keysight CX1101A and CX1102A current sensors operating within the CX3300 Series Device Current Waveform Analyzer platform. Connection is made via SMA coaxial connectors to the ammeter terminals of a CX3300 analog channel. Proper 30-minute warm-up after initial connection ensures measurement stability and accuracy.


















