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Reply to "Update and Video: A Built-In Two or Four Port TIU Output Signal Indicator"

Stan, given the sensor's requirement for a pure AC waveform to properly sense any level of the DCS signal, I'm still wondering how useful this would be.  Of course, this is just one man's opinion, I just don't know if it will actually serve the purpose with any consistency.  With anything but a pure sine wave in, the DCS tester says there's a good signal there all the time, even just connected to the transformer!  Any spikes on the output get through the filter.

Both of the transformers below give me a continuous "good" indication with the DCS tester connected directly and at full throttle.  The sharp slope obviously gets through the filter and triggers the detection.  Almost all the electronically controlled transformers have a similar waveform with the exception of the Z-4000 which synthesizes a sine wave.  That being the case, a ton of layouts would not be able to use this kind of detection.  Since the Z-4000 is buried right now, I haven't actually tried it connected directly to the DCS tester to see if it's "almost sinewave" is good enough not to trigger the detection.  Don't know if those little "squiggles" in the waveform would sneak through the filter.

Z-1000 full throttle waveform

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CW-80 full throttle waveform

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The Z-4000 was not tested as I don't have it unpacked at the present time.

Z-4000 full throttle waveform

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Last edited by gunrunnerjohn

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