Nichimen introduces the Hioki 1117 flying probe tester with two heads, each for the topand the bottom side of thePCB, which allows simultaneous dual-sided testing. Besides the capacitance measurement for extremely fast detection of shorts and opens, the instrument is designed to accurately measure the resistance of micro vias, embedded micro vias and through holes down into the micro-ohm range. The four-terminal-probes eliminate the parasitic influences of the wiring resistances. Resistance values can be used from the PCB manufacturers as a tool to verify the quality. Incomplete vias due to insufficient connection between layers or residues will cause increased resistance. This leads to awkward influences on the electrical performance, especially with increased bandwidth or clock frequencies. The tester can also verify capacitance, general resistance, di-odes, Z-diodes, transistors and photo couplers.
EPP 221
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