Featured Capabilities
Testing multiple UUTs simultaneously
Introduction
The licences for XJTAG software permit multiple instances of the software to run on the connected PC, and in the case of XJRunner allow the software to run tests on multiple Units Under Test (UUTs) in parallel.
If you already have a licensed JTAG controller attached to your PC then any further controllers attached will also have the ability to use that licence (at the same time). This means that you can purchase additional JTAG controllers without any application licence (also known as ‘auxiliary controllers’) for this purpose as shown below.
The XJQuad controller is equivalent to 4 XJLink2 units in one case, and so are licenced using one software licence and three hardware ones as standard; they are useful for testing up to four UUTs in a single jig. However, when the boards being tested are distributed across multiple jigs, it is probably better to use several XJLink2s so that you can keep the JTAG cables short to maintain signal integrity. In that case, use one XJLink2 with a software licence and auxiliary units for the remainder. The practical limit for the number of boards that can be tested in parallel is dependent on the PC’s processing power; six to twelve boards tends to be realistic.
All versions of the XJLink can be purchased as auxiliary units, including XJLink-PF40 and all the XJLink2-based controller series.
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