Contact an Expert

L4400 Series LXI Switch and Control Instruments

The Keysight L4400 Series of switches, digital input/output and analog output instruments offer the best tradeoff in size, functionality and test. They are standalone instruments that perform the same function as their companion 34980A-Series plug-in modules. They come with a fully operational programming interface including a web-page for easy control.

For applications that require the performance of the Keysight 34980A Multifunction Switch/Measure Unit at a lower channel count.

Need help deciding which modules are right? Use our step by step guide

Learn more Switch/Measure 10-Tips Videos

Compare All L4400 LXI Switch & Control Instruments (7)

Find a Model

  • L4421A 40-Channel Armature Multiplexer L4421A 40-Channel Armature Multiplexer (1) 

    L4421A 40-Channel Armature Multiplexer

    • 2-wire latching armature relays
    • 300V, 1A switch; 2A carry current
    • Thermocouple reference
    • Scan up to 100 ch/sec

  • L4433A Dual/Quad 4x8 Reed Matrix L4433A Dual/Quad 4x8 Reed Matrix (1) 

    L4433A Dual/Quad 4x8 Reed Matrix

    • 2-wire or 128 1-wire cross points
    • Dual 4x8, 8x8, or 4x16 2-wire configurations
    • +/- 150V peak, o.5A switch, 1.5A carry current

  • L4437A 32-channel Form A/Form C General Purpose Switch L4437A 32-channel Form A/Form C General Purpose Switch (1) 

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

    • 28 form C channels, up to 1A, 50W
    • 4 form A channels, up to 5A, 150W
    • Armature latching relays with relay counter

  • L4445A Microwave Switch/Attenuator Driver L4445A Microwave Switch/Attenuator Driver (1) 

    L4445A Microwave Switch/Attenuator Driver

    • Control microwave switches and attenuators
    • Expandable with 34945EXT
    • Distribution boards for easy wiring
    • External power option

  • L4450A 64-bit Digital I/O with Memory and Counter L4450A 64-bit Digital I/O with Memory and Counter (1) 

    L4450A 64-bit Digital I/O with Memory and Counter

    • 64 bi-directional digital I/O bits
    • Variable thresholds from 0V to 5V
    • 128K pattern memory
    • Two 10 MHz counter/totalizer channels

  • L4451A 4-Channel D/A Converter with Waveform Memory L4451A 4-Channel D/A Converter with Waveform Memory (1) 

    L4451A 4-Channel D/A Converter with Waveform Memory

    • Four isolated analog outputs
    • Output up to +/-16V DC or +/- 20 mA DC
    • 16-bit resolution
    • On-board memory for custom waveforms

  • L4452A Multifunction with 32-bit DIO, 2-ch D/A and Totalizer L4452A Multifunction with 32-bit DIO, 2-ch D/A and Totalizer (1) 

    L4452A Multifunction with 32-bit DIO, 2-ch D/A and Totalizer

    • 32-bits digital IO TTL up to 42V
    • 100 KHz gated totalizer
    • Two +/- 12 V analog outputs with 1 mV resolution