Home » » GX5050   (PXI 6U)

Dynamically Controlled High Speed Digital I/O PXI Card

  • 32 bi-directional I/O pins (16 cards may be daisy-chained for a total of 512 pins)
  • 3 MB or 12 MB of on-board memory
  • External and programmable internal clock rates from 5 Hz to 50 MHz
  • Dynamically controlled sequencer supports branching,looping, subroutines, & advanced features for UUT synchronization
  • Multiple I/O options include TTL, PECL, LVDS, and Programmable levels


The GX5050 is a high speed Dynamic Digital I/O card that provides a full set of features that is comparable to high speed I/O products found in large functional test systems. The card shares an identical architecture with the GC5050, but the GX5050 is a PXI card (6U) and the GC5050 is a PCI card. Both have the ability to operate independently of the host computer when in RUN mode.


The GX5050 provides real-time digital stimulus and capture with 32 pins per card. Up to 16 cards can be daisy-chained for a total of up to 512 pins. The 32 pins can be configured as input or output groups of eight. The direction of each group can be changed dynamically with the sequencer, externally, or via both methods. There is also a 16-bit external bus for triggering and synchronization with external events.

Clock and strobe signals are distributed to the cards via a daisy-chained ribbon cable. These signals can be generated internally or externally. The external control signals allow full synchronization with the unit under test (UUT) and minimize the initialization part of the test.

Algorithmic Sequencer Technology (AST™)
An innovative, state-of-the-art algorithmic sequencer allows users to create loops and branches to manipulate the output vectors. All of the sequencer commands can be conditioned using the External Event bus and may be programmed using the Graphical Vector Editor using Windows® API command or via a script language. This gives the GX5050 the capability to generate test vectors indefinitely at maximum test rates. Internal and external trigger and pause commands are available in several modes.

On-Board Memory
The on-board memory is configurable for 3 MB or 12 MB and is user upgradeable. Separate memories are provided for output data, response data, and test step sequencing commands. The separate memory for response data lets the application read the activity on the UUT pins independent of the bi-directional mode. This is an important feature lacking in most high speed digital I/O instruments.

The GX5050 operates in any 6U PXI slot that provides both 3.3 V and 5 V power supplies and is compatible with the Marvin Test Solutions GT50 and GT25  test vectors. Additionally, firmware can be upgraded using the unique In-System-Programming front panel.

I/O Modules

The GX5050 offers a variety of I/O modules with input and output levels that meet the requirement of any digital test application, including TTL, PECL, ECL, Programmable Levels, LVDS, and custom modules. I/O module type and memory size must be specified at the time the GX5050 is ordered.

I/O ModulesChannelsLevels
TTL325 V and 3.3 V logic
PECL32Positive ECL
Programmable Levels320.3 V to 9 V


The GX5050 can be configured as a Master or as a Slave. The Master provides timing signals for up to 15 Slaves.

Programming and Software

The board is supplied with GTDIO/DIOEasy, a software package that includes vector editing, a virtual instrument panel, and 32/64-bit DLL driver libraries 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, C/C++, Microsoft Visual Basic®, Delphi, and Pascal. On-Line help file and PDF User's Guide provides documentation that includes instructions for installing, using and programming the board.


  • Automatic Test Equipment (ATE)
  • High-speed functional digital test
  • Vector capture
  • Hybrid and digital device test
  • Memory testing
  • Event sequencer, logic pattern capture