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Multiplexer Modules for 34980A

Keysight (Keysight) MUX

34980A multiplexer switch modules

The 34980A Multiplexer Switch Module can be used to connect one of many different points to a single point. You can connect to an external instrument or switch multiple analog signals to the 34980A internal DMM. Multiple multiplexers can be connected together via the 4 analog buses to create an even larger multiplexer.

Choose from the following features:

  • wire, 2-wire, or 4-wire configurations
  • High voltage—up to 300 V, 1 A
  • High density—70 2-wire or 80 1-wire channels
  • Scan up to 1000ch/sec with the 34925A
  • Bandwidths up to 45 MHz
  • Temperature measurements with built-in thermocouple reference junction (34921T)
  • AC or DC current measurements without external shunts
  • Flexible connections via standard 50- or 78- pin Dsub cables or detachable terminal blocks

The break-before-make feature also ensures that no two signals are connected to each other during a scan. All multiplexer modules also include a relay switch counter to help predict when relays need to be replaced.

Multiple multiplexers can connect to the built-in analog buses, allowing you to scan up to 560 2-wire channels or 640 1-wire channels in a single mainframe. The 34921A also offers 4 channels for directly measuring current. Or if you need more current channels, shunts can be added to the terminal block for easy current measurements.

The multiplexer modules feature break-before-make connections to ensure that no two signals are connected to each other during a scan. Or, if you prefer, you can control switching manually to create your own switch configuration. All the multiplexer switches have a relay counter to help predict when relays need to be replaced.

Need help deciding which modules are right? See all of the modules side by side on 34980A Multifunction Switch Measurement Unit Mainframe.

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Compare All Multiplexer Modules for 34980A (5)

Find a Multiplexer Modules for 34980A

  • 34921A 40-Channel Armature Multiplexer for 34980A 34921A 40-Channel Armature Multiplexer for 34980A (1) 

    34921A 40-Channel Armature Multiplexer for 34980A

    • 40 2-wire latching armature relay channels
    • 300V, 1A switch; 2A carry current
    • 100 ch/s scanning
    • Built-in thermocouple reference junction
    • 4 current channels

  • 34922A 70-Channel Armature Multiplexer for 34980A 34922A 70-Channel Armature Multiplexer for 34980A (1) 

    34922A 70-Channel Armature Multiplexer for 34980A

    • 70 2-wire latching armature relay channels
    • 300V, 1A switch; 2A carry current
    • 100 ch/s scanning
    • Mix 2- or 4-wire configurations

  • 34923A 40/80 Channel Reed Multiplexer for 34980A 34923A 40/80 Channel Reed Multiplexer for 34980A (1) 

    34923A 40/80 Channel Reed Multiplexer for 34980A

    • 40 2-wire (or 80 1-wire) reed relay channels
    • +/-150 V peak, 0.5A switch; 1.5A carry current
    • 500 ch/s scanning
    • Mix 2 or 4-wire configurations
    • Includes relay counter

  • 34924A 70-Channel Reed Multiplexer for 34980A 34924A 70-Channel Reed Multiplexer for 34980A (1) 

    34924A 70-Channel Reed Multiplexer for 34980A

    • 70 2-wire reed relay channels
    • +/-150 V peak, 0.5A switch; 1.5A carry current
    • 500 ch/s scanning
    • Mix 2 or 4-wire configurations
    • Includes relay counter

  • 34925A 40/80 Channel Optically Isolated FET Multiplexer for 34980A 34925A 40/80 Channel Optically Isolated FET Multiplexer for 34980A (1) 

    34925A 40/80 Channel Optically Isolated FET Multiplexer for 34980A

    • 40 2-wire channels or 80 1-wire channels
    • High-speed optically isolated FET switches, with relay counter
    • +/- 80V peak, 20mA switch
    • 1000 Cha/s scanning
    • Mix 2- or 4-wire configurations