What Does onTAP Test? As boundary scan technology grows in popularity, more JTAG compliant devices (1149.1 and 1149.6) are now being included in board design, along with more JTAG chains that often require simultaneous testing. The great advantage to using onTAP, is that there are no restrictions on the number of devices in a […]
As we have promised our users, Flynn Systems continues to develop and add new features to onTAP Boundary Scan Software. These new features vastly improve onTAP’s capability, enabling onTAP users to do more with less. We had been developing support for IEEE 1149.6 for several months, and at the end of April, we were able to […]
We are constantly exposed to new situations in boundary scan test and new approaches to using boundary scan to achieve better test fault coverage. One item standing in the way of higher, more accurate fault coverage is common tri-state control cells.
Tests may be defined in script files which may then be translated into executable Serial Vector Format (SVF) files. The general approach is to place all of the required BSDL files into a folder and then to relate the BSDL files to circuit locations in declarations at the beginning of the script file. Once BIT_STRINGS are […]
Mid-state shorts are a major problem that often goes undetected by typical boundary scan connectivity tests is mid-state/resitive shorts. Flynn Systems recognized this “hole” in boundary scan testing and was the first boundary scan test company to test for mid-state shorts, improving test fault coverage.
Ontap_parallel.exe can be used to simultaneously run test suites on multiple PC boards using the onTAP DLL. Parallel board testing must be enabled for the DLL license. Testing is fastest on a multiple processor PC , particularly where one core processor is available for each board. For example if four PC boards are being tested in parallel, then a quad core processor is recommended so that the time to test four boards is about the same as that required to test one board.