Agilent/Keysight U2356A

The Keysight U2356A is a high-density USB modular data acquisition device that operates as a standalone unit or integrates into the U2781A chassis for expanded capability up to 384 channels. Built around 16-bit analog input resolution with 64 single-ended or 32 differential channels sampling at 500 kSa/s, the U2356A delivers simultaneous multifunction measurement across analog, digital, and counter domains. Two 12-bit analog outputs at 1 MSa/s update rate support arbitrary and predefined waveform generation.

Twenty-four programmable TTL digital I/O channels enable closed-loop control of external switches, relays, and solenoids, while two general-purpose counter channels round out the measurement suite. The device communicates via High-Speed USB 2.0 with USBTMC-USB488 protocol compliance.

Technical Specifications

• Resolution: 16-bit


• Channels: 64 single-ended or 32 differential


• Sampling rate: Up to 500 kSa/s


• Input ranges: ±10 V, ±5 V (bipolar) Analog Output


• Channels: 2


• Resolution: 12-bit


• Update rate: 1 MSa/s


• Waveform support: Predefined and arbitrary Digital I/O & Counters


• TTL channels: 24-bit programmable


• Counter channels: 2 general purpose Interface & Connectivity


• Primary: High-Speed USB 2.0 with USBTMC-USB488 compliance


• Operating system: Microsoft Windows

Key Features

• Standalone or modular operation within U2781A chassis infrastructure


• Dual functional modes: digital multimeter (polling) and simple oscilloscope (continuous with triggering)


• Burst mode for simulated simultaneous acquisition


• BenchVue software license (BV0025B) included; supports Keysight VEE, MATLAB R2007a and later, NI LabVIEW, and Microsoft Visual Studio


• Legacy data logging via Agilent Measurement Manager (AMM)


• WEEE Directive (2002/96/EC) compliant

Typical Applications Design validation, manufacturing test, physical measurements, and closed-loop feedback stimulus applications in research and engineering environments.

Compatibility & Integration Scalable to 384 total channels through U2781A modular chassis integration. Supports industry-standard software development environments for custom measurement automation. End of Life Notice: Discontinued June 1, 2024. Five-year post-discontinuation support available.