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L4451A 4-Channel Isolated D/A Converter with Memory

Data Sheets

Introduction

4-Channel D/A Converter offers high-voltage analog outputs wherever your application needs it

The Keysight Technologies, Inc. L4451A is a high-performance 4-channel D/A converter that is LXI Class C compliant. With its small size and Ethernet connectivity, the D/A converter can be placed wherever your application needs it.

The Keysight L4451A has four isolated analog channels that are useful to source bias voltages to your device under test, to control your analog programmable power supplies, or use the outputs as setpoints for your control systems. You can use the standard waveforms provided or create your own with over 500,000 points. These points can be dynamically allocated among one or more channels and output as a point-to-point arb.

Using this LXI instrument, you’ll get all the benefits of an Ethernet connection, built-in instrument web interface, standard software drivers and more. The LXI standard is supported by multiple vendors, en­abling lower cost of test with accelerated test integration and development.

  • LXI compliance includes built-in Ethernet connectivity
  • Fully-featured graphical web interface
  • Four isolated analog outputs
  • Outputs up to ±16 V or ±20 mA DC
  • 16-bits of resolution
  • 200 kHz update rate
  • Default standard waveforms
  • Software drivers for most common programming environments

Isolated analog outputs can be stacked for higher voltage outputs

The L4451A has four independent, isolated channels that can output DC voltage up to ±16 V or DC current up to ±20 mA with 16 bits of resolution. The gain and offset can be adjusted while in operation. And since these are isolated channels, they can be stacked to create waveforms with higher output voltages.

Each channel can be controlled manu­ally, or use the onboard memory to download a waveform. The 500 k global memory can store up to 32 waveforms. Any waveform can be dynamically allocated among one or more channels and output as a point-to-point arbitrary waveform generator at up to 200 k points/s. You can use the standard sine, square or ramp wave shapes pro­vided or define your own wave shape using over 500,000 points and output to a device under test.

Synchronize your outputs with the CLK that can be divided down for each channel independently.

The L4451A is electronically calibrated using an external DMM and the CAL command.

System connections you can trust

The L4451A comes with 1 heavy duty  50-pin Dsub connector that allows for simple, reliable connection options. Each connector uses 30 micro-inches of gold to ensure a repeatable, accurate measurement. Other connection options include: 

  • Detachable terminal blocks with strain relief
  • Low-cost, standard 50-pin Dsub connector kits and cables
  • Mass interconnect solutions

Ethernet connectivity enables simple connection to the net­work and remote access to measurements

The Ethernet interface offers high-speed connections that allow for remote access and control. You can set up a private network to filter out unwanted LAN traffic and speed up the I/O throughput, or take advantage of the remote capabilities and distribute your tests worldwide. Monitor, troubleshoot, or debug your application remotely. Ethernet communication also can be used with the support of LAN sockets connections.

The optional GPIB interface has many years of proven reliability and can be used for easy integration into existing applications.

The L4451A ships with the Keysight E2094N I/O Libraries Suite, which enables connections for Keysight and non-Keysight modular and traditional instruments. This makes it easy to configure and integrate instruments into your system.

Fully-featured graphical web interface makes it easy to set-up and troubleshoot your tests from anywhere in the world

The built-in web interface provides remote access and control of the instrument via a Java-enabled browser such as Internet Explorer. Using the web interface, you can set up, trouble­shoot, and monitor your instrument from remote locations.

  • View and modify instrument setup
  • Configure analog and clock out­puts
  • Define and output waveforms
  • View error queue
  • Get status reports, current con­figuration, firmware revisions, and more

Additionally, since the web interface is built into the instrument, you can access it on any operating system that supports a web browser without having to install any special software. Password protection and LAN lockout are also provided to limit access for additional security.

Software for most popular programming environments

Full support for standard programming environments ensures compatibility and efficiency. You can use direct I/O with your own software, or use standard IVI and LabVIEW software drivers that provide compatibility with the most popular development environments:

  • National Instruments LabVIEW, LabWindows/CVI, TestStand, and Switch Manager
  • Microsoft C/C++ and Visual Basic

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