The Keysight U2331A is a high-density USB modular data acquisition device built for multifunction measurement, data logging, and monitoring tasks. It operates standalone or integrates into a modular chassis system to expand channel capacity. The instrument delivers high-speed USB 2.0 connectivity with USBTMC-USB488 compliance, ensuring efficient host communication and data transfer. Support for Keysight VEE, MATLAB, NI LabVIEW, and Microsoft Visual Studio streamlines integration into existing development workflows.
Technical Specifications
Analog Input
• 64 single-ended or 32 differential multiplex channels
• 12-bit resolution
• Single-channel sampling: 3 MSa/s
• Multi-channel sampling: 1 MSa/s aggregate (rate per channel = 1 MSa/s ÷ number of channels active)
Analog Output
• 2 channels, 12-bit resolution
• Update rate: 1 MSa/s
• Waveform generation: sinusoidal, square, triangle, sawtooth, and noise
• External reference voltage range: ±10 V maximum
Digital I/O & Counters
• 24-bit programmable TTL input/output channels
• 2 general-purpose digital counter channels (1 MHz maximum frequency input)
ADC Architecture
• 12-bit ADC with last 4 bits truncated
Triggering & Acquisition
• Immediate, analog, external digital, SSI/Star, and Master/Slave trigger sources
• Burst mode for simulated simultaneous analog input acquisition
• Self-calibration for offset adjustment within specified accuracy ranges
– Key Features
• Burst mode enables multi-channel simultaneous acquisition simulation
• Configurable trigger options for both analog-to-digital and digital-to-analog operations
• On-board self-calibration reduces manual calibration overhead
• Slave and SSI/Star trigger modes optimized for U2781A chassis integration
– Typical Applications
• Multi-channel industrial sensor monitoring and data logging
• Waveform generation and acquisition in automated test systems
• Frequency and timing measurements via digital counter inputs
• Laboratory instrument control requiring flexible triggering and synchronization
– Compatibility & Integration
Hi-Speed USB 2.0 interface with USBTMC-USB488 standard compliance. Compatible with Keysight VEE, MATLAB, NI LabVIEW, and Microsoft Visual Studio. Operates as standalone unit or as modular component within U2781A USB modular instrument chassis.
