The Keysight L4451A is a 4-channel isolated digital-to-analog converter engineered for precision signal generation and control in test systems. This LXI Class C compliant instrument delivers DC voltage outputs to ±16 V and DC current outputs to ±20 mA across four independent isolated channels, each with 16-bit resolution and 200 kHz update rates. Built-in Ethernet connectivity and a graphical web interface enable remote operation and straightforward system integration without requiring additional hardware modules.
Technical Specifications
• Channels: 4 isolated analog outputs
• Output Voltage: ±16 V DC
• Output Current: ±20 mA DC
• Resolution: 16 bits
• Update Rate: 200 kHz per channel
• Waveform Memory: Over 500,000 points, dynamically allocatable across channels
• Arbitrary Waveform Playback: Up to 200 k points/s
• Standard Waveforms: Sine, square, ramp
• Stored Waveforms: Global memory supports up to 32 waveforms
• Synchronization: Clock output divisible independently per channel
• Gain and Offset: Adjustable during runtime
• Channel Isolation: Supports stacking for higher output voltages
• Power Supply: Universal 100 V to 240 V ±10%, 50 Hz to 60 Hz ±10%
• Power Consumption: 15 VA
– Key Features
• LXI Class C compliance with standard 10BaseT/100BaseTx Ethernet
• Optional IEEE 488.2 GPIB interface for legacy system integration
• Fully-featured graphical web interface for setup and remote monitoring
• Compact 1U half-rack form factor: 40.9 × 212.3 × 379.3 mm, 3.7 kg
• 50-pin D-sub connector for waveform data transfer via Ethernet or GPIB
– Typical Applications
• Bias voltage sourcing
• Analog programmable power supply control
• DC control system implementation
– Compatibility & Integration
Supported software drivers include IVI-C, IVI-COM, LabVIEW, Keysight VEE Pro, National Instruments TestStand, LabWindows/CVI, and Microsoft Visual Studio .NET (C/C++, Visual Basic 6). Keysight I/O Libraries Suite 14 or greater required. Operating temperature range: 0 °C to 55 °C; storage: -40 °C to 70 °C. Complies with CSA, UL/IEC/EN 61010-1 safety standards and IEC/EN 61326-1, CISPR 11 EMC requirements.
