Agilent/Keysight 1155A

The Agilent/Keysight 1155A is a two-channel active oscilloscope probe delivering 750 MHz bandwidth for high-fidelity signal acquisition on modern test platforms. Engineered for low-mass probing of fine-pitch integrated circuits and surface-mount components, the 1155A weighs less than 1 gram at the probe tip - minimizing loading effects and parasitic capacitance during sensitive measurements.

Technical Specifications

• Bandwidth: 750 MHz


• Channels: 2


• Input Impedance: 1 MΩ


• Input Capacitance: < 2 pF


• Probe Tip Weight: < 1 g


• Overall Weight: 0.23 kg (net)

Key Features

• Autoprobe interface for direct integration with supported Infiniium oscilloscopes - eliminates manual probe setup and enables automatic attenuation correction


• Ultra-low input capacitance preserves signal integrity on high-impedance circuits


• Lightweight probe tip reduces mechanical loading and contact stress on delicate test points


• Operating temperature range: 0 °C to +55 °C; storage to +70 °C


• Calibration verified against NIST-traceable equipment


• Accessory kit includes four probing pins, five SMT clips, two flexible leads, two spacing ground adapters, color-coded SMT leads, and BNC-to-probe-tip adapter

Typical Applications Well-suited for precision analog and mixed-signal characterization, prototype validation, and compliance testing where minimal circuit loading and accurate waveform capture are critical.

Compatibility & Integration Designed for Agilent Infiniium oscilloscopes: 54800, 8000, 80000, 9000, and 90000 series. Not compatible with InfiniiVision 5000, 6000, or 7000 Series - use 1145A active probe with 1142A power supply for those instruments. Autoprobe interface ensures plug-and-play operation with supported platforms.