A method of preventing inter-system interference while acquiring waveforms in a test and measurement instrument with variation in a device under test system S-parameters. The method includes receiving a waveform from a device under test at the test and measurement instrument, digitizing the…

The signal evaluation method has the actual output signal (Is) of the ion current measurement filtered via a transmission function corresponding to the soiling characteristic of the glow and ion current measuring plugs, upon detection of an excessively soiled plug.

In method and apparatus for detecting a fault in a glow plug provided in a diesel engine, a possibility of a fault in the glow plug is determined without utilizing a forced change in the state of energization of the glow plug for the purpose of diagnosis, before the presence of a fault in the glow…