Column Control DTX

L4437A 32-Channel Form A/Form C General Purpose Switch

Data Sheets

– LXI compliance includes built-in Ethernet connectivity 

– Fully-featured graphical web interface 

– 28 Form C channels up to 1 A, 60 W 

– 4 Form A channels up to 5 A, 150 W

– Armature latching relays

– Relay counter 

– Temperature sensor for overheating conditions

– Simultaneous channel switching

– Software drivers for most common programming environments 

Introduction

General purpose switch offers high-power signal switching

The Keysight Technologies L4437A is a general purpose switch that is LXI Class C compliant. With its small size and Ethernet connectivity, this switch can be placed wherever your application needs it.

The L4437A has 32 general purpose switches that can be used to cycle power to products under test, control status lights, and to actuate external power relays and solenoids.

28 channels are Form C switches for basic switching needs. Four additional Form A channels are offered for high-power switching needs.

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

Versatile switching for your high-power switching needs

The L4437A general purpose switch can be used to route signals or to control other system devices. This switch is ideal for device actuation and switching loads or power supplies.

The L4437A switch has 28 independent single-pole, double-throw (SPDT) 1 A re­lays and 4 single-pole, single-throw (Form A) 5 A relays. The 28 Form C channels have 300V, 1 A contacts and can handle up to 60 W. The form A channels are 30 VDC/250 VAC, 5 A contacts and can han­dle up to 150W, enough for many power line-switching applications.

These switches are made of latching ar­mature relays where multiple channels can be closed at the same time. Additionally, for switching reactive loads, the optional terminal blocks have pads for snubbing circuits.

The sequence feature defines switch closures and controls and can be used to easily change between different switch setups. Assign a sequence, give it a name and then execute it with the custom name you created. External trigger capabilities make it easy for you to time and synchro­nize switch closures and openings.

The L4437A also includes a relay counter to monitor and help predict when relays are nearing their end of life.

System connections you can trust

The L4437A comes with 2 heavy duty 50-pin Dsub connectors that allow 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, enabling 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 L4437A 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 for you 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
  • Open or close switches
  • Send, receive or view SCPI com­mands
  • Define and execute switch sequences
  • View error queue
  • Get status reports on relay counts, 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 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:

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

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Column Control DTX