Agilent / Keysight 34951A 4-Channel D/A Converter with Waveform Memory for 34980A

The Keysight 34951A is a 4-channel isolated digital-to-analog converter module for the 34980A Multifunction Switch/Measure Unit. It delivers precise analog signal generation with DC voltage outputs up to ±16 V, DC current outputs up to ±20 mA, and point-to-point arbitrary waveform generation from an on-board memory bank exceeding 500,000 points. Each channel updates at 200 kHz with 16-bit resolution and 500 µV voltage output resolution.

The module's electronically isolated channels can be stacked or combined to reach ±64 V, making it ideal for bias voltage sourcing, programmable power supply control, and test system automation. Hardware remote sensing on voltage outputs compensates for lead drops in precision applications.

Technical Specifications

• Channels: 4 isolated analog outputs


• Output Voltage: ±16 V DC, 500 µV resolution


• Output Current: ±20 mA DC


• Resolution: 16 bits


• Update Rate: 200 kHz per channel


• Waveform Memory: Over 500,000 points, dynamically allocated across one or more channels


• Waveform Capability: Standard and user-defined arbitrary waveforms, point-to-point generation


• Channel Isolation: Electronic isolation; multiple modules can stack or combine for ±64 V operation


• Remote Sensing: Hardware remote-sensing capability on voltage outputs

Key Features

• Four independent isolated output channels eliminate ground-loop interference


• Large waveform memory permits complex signal sequences without host processor intervention


• Flexible memory allocation allows optimization for single-channel high-resolution or multi-channel concurrent output scenarios


• Channel stacking supports extended voltage ranges beyond ±16 V


• Remote sensing provides load-independent voltage accuracy

Typical Applications

• Bias voltage and offset sourcing


• Programmable power supply control and setpoint establishment


• Control system actuation and stimulus generation


• Precision waveform generation for automated test sequences

Compatibility & Integration The 34951A installs as a plug-in module in any of the eight slots of the 34980A Multifunction Switch/Measure Unit mainframe. Refer to 34980A documentation for per-channel current ratings at specified voltages and environmental operating conditions.