The Agilent/Keysight 54120T is a high-performance digitizing oscilloscope system engineered for precision measurements of high-speed signals in demanding applications. Built on the HP 54120 Series platform, this instrument combines multi-gigahertz bandwidth with picosecond-level timing resolution and fully programmable control via HP-IB interface.
Technical Specifications
Timing and Measurement Accuracy
• Time interval accuracy: 10 ps
• Time interval resolution: 0.25 ps
• Timebase accuracy: Typically 1 ps
• Vertical measurement accuracy: 0.4%
• Vertical resolution: 32 µV
Bandwidth and Channels
• Four-channel architecture
• Channel bandwidth: Up to 12.4 GHz (54122T), up to 20.0 GHz (54121T, 54123T, 54124T)
• True triggering capability up to 18 GHz with external test set
Vertical Specifications
• Vertical sensitivity range: 1 mV/div to 2.4 V/div (standard models); 1 mV/div to 80 mV/div (54122T)
• Dynamic range: ±320 mV relative to channel offset
• Input connectors: 3.5 mm (m)
Acquisition and Analysis
• Automatic pulse parameter measurements
• Time and voltage histogram capability for noise and jitter analysis
• Reflection (TDR) and transmission (TDT) normalization
• No manual loop gain adjustment required—delivers repeatable results
– Key Features
• Picosecond measurement capability enables characterization of ultra-fast transients
• Fully HP-IB programmable for automated test sequences and integration into larger systems
• Color display for enhanced signal visibility
• Four independent channels support multi-signal comparison and correlation analysis
– Typical Applications
• High-speed device and circuit characterization
• Telecommunications signal analysis
• Microwave design validation
• Jitter and noise quantification in digital and analog systems
– Compatibility & Integration
Instrument control requires Keysight IO Libraries Suite (2021 or later). Supported operating systems: Windows 10 (version 1809 or later) and Windows 11 (version 22621 or later). Required software components include Keysight Communications Fabric, IVI and VISA Shared Components, Microsoft Visual C++ Redistributables, Node.js, and PostgreSQL.
