GX6315 Series
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High Current 45 Relay PXI Card

  • 45 individual high current single pole double throw (SPDT) Form C relays
  • 7 A contact rating per channel
  • 9 additional relay drivers for external relays or other devices
  • 6U PXI Instrument


The GX6315 is a 45 channel, high current relay board that plugs directly into any 6U PXI slot. The GX6315 also provides nine transistor-driven channels for external relays. These outputs may be used to drive external loads, such as heavier duty relays, lamps or other devices.


The GX6315 consists of three groups: A, B, and C. Each group has 15 high current relays, three open collector relay drivers, and a 50-pin D type connector. The three open collector drivers in each group are connected via diodes to the same fly-back signal. The fly-back signal can be connected to the external relay supply to provide suppression for voltage spikes generated by the relays’ coils.

Programming and Software

The board is supplied with the GXSW library, a software package that includes a virtual instrument panel, and a Windows 32/64-bit DLL driver library and documentation. The virtual panel can be used to interactively program and control the instrument from a window that displays the instrument’s current settings and status. In addition, interface files are provided to support access to programming tools and languages such as ATEasy, LabView, LabView/Real-Time, C/C++, Microsoft Visual Basic®, Delphi, and Pascal. An On-Line help file and PDF User's Guide provides documentation that includes instructions for installing, using and programming the board.
A separate software package - GtLinux - provides support for Linux 32/64 operating systems.


  • Automatic Test Equipment (ATE)
  • Power switching
  • Alarm Outputs
  • Data Acquisition Systems
  • Process Control Systems