Multiplexers for connecting MITUTOYO gauges to a computer's USB port

The QTREE-SDMX range of multi-channel multiplexers connects Mitutoyo gauges to a computer's USB port. The multiplexer uses the MUX-50 protocol and are therefore compatible with MITUTOYO software. The QTREE-SDMX4, QTREE-SDMX8 and QTREE-SDMX12 are available for 4, 8 and 12 gauges respectively.

Front and rear view of the QTREE-SDMX4 device


In contrast to the previous model, the electronics are installed in a small, solid, anodized aluminum box and the faces are not fitted witch plastic frames. The front and back panels have engraved indelible labels. Rubbet feet ensure safe placement on work surfaces.

Parallel independent RS232/USB transmitter

Since 2009, all multiplexers are equipped with an additional RS232 input. This input is for a separate RS232/USB transmitter that the operating system assigns to a separate COM port. This transmitter is completely independent of the Mitutoyo Digimatic inputs and can not therefore be considered as an additional multiplexer input channel. An RS232 interface can be connected to the converter. Communication with the connected gauges must be provided by a separate software driver.

Block diagram of QTREE-SDMX4

Basic features

  • The device is a multi-channel multiplexer for connecting Mitutoyo gauges to a computer's USB port.

  • The multiplexers in the QTREE-SDMX product range can be connected to a computer with operating system Windows 98, NT, Me, 2000, XP, Vista, W7, W8, W8 and newer.

  • QTREE-SDMX product range:
    · QTREE-SDMX4 – 4-channel design
    · QTREE-SDMX8 – 8-channel design
    · QTREE-SDMX12 – 12-channel design

  • Additional information:
    · If you require more datailed information on our range of products, please do not hasitate to contact us.


Main advantages of the QTREE-SDMX product range:

  • The design of the QTREE-SDMX product range enables it to be used both in laboratories, testing rooms, and directly in industrial environments.
  • QTREE-SDMX multiplexers connect to your computer via a USB port, which means that no external power source required,
  • The prices of the products in the QTREE-SDMX range are more competetive than the prices of common Mitutoyo communitacores via the RS232 interface.
  • When you purchase a QTREE-SDMX multiplexer, you receive a discount on the purchase of QTREE-DC/SDMX software for data collection from measuring instruments and export into MS Excel.
  • The design of the QTREE-SDMX BT range enables the multiplexer, in special cases, to be extended to include up to 16 channels.

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