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International Automotive Technicians Network
Re: Does My Interro Ign scope need to be calibrated?
Posted to Tool & Equipment Forum on 2/17/2006

Hi Kelly, I was losing my sync signal intermittently and bought a new probe from Interro. Tech support said this is the #1 cause of erractic triggering. Here is the new sync probe signal taken from a plug wire: [1987 Volvo 240, Ignition Waveform]

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