Automotive Ignition Probe – Secondary Ignition Signal Probe for Oscilloscopes
A specialised automotive ignition probe designed for secondary ignition waveform measurement using an oscilloscope. Enables safe, non-intrusive analysis of spark ignition voltage behaviour, misfires, and cylinder performance with high-voltage attenuation up to 10,000:1.
This Automotive Ignition Probe is an inductive and capacitive sensing accessory developed for secondary ignition diagnostics when used in conjunction with an oscilloscope.
The probe allows technicians to observe spark ignition secondary waveforms, including voltage rise, burn time, and waveform overlap, providing valuable insight into ignition timing, coil performance, and cylinder condition. High-voltage ignition signals are internally attenuated to a safe low-voltage level, protecting the oscilloscope from electrical damage while maintaining waveform integrity.
Designed for close-proximity measurement, the probe clips onto insulated spark plug leads or ignition connections, enabling non-contact signal pickup without direct electrical connection. This makes it suitable for diagnosing misfires, weak spark conditions, ignition timing faults, and uneven cylinder operation.
A 2.5-metre lead length provides flexibility for use in engine bays, while the integrated grounding clip improves signal stability and measurement accuracy.
Key Applications
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Secondary ignition waveform analysis
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Misfire detection and ignition diagnostics
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Spark voltage and burn time analysis
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Cylinder-to-cylinder comparison
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Automotive oscilloscope testing
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Workshop and mobile vehicle diagnostics
Key Features
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Designed for automotive ignition diagnostics
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Measures secondary ignition waveforms
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High-voltage attenuation up to 10,000:1
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Safe for use with oscilloscopes
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Inductive and capacitive signal sensing
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Non-intrusive clamp-on measurement
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Integrated grounding clip
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Long 2.5-metre lead for engine bay access
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Specifications
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Product Type: Automotive ignition probe
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Measurement Method: Inductive and capacitive sensing
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Attenuation Ratio: Up to 10,000:1
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Lead Length: 2.5 metres
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Output Connection: BNC connector for oscilloscope
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Ground Reference: Integrated grounding clip
Important Usage Notes
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Do not clamp directly onto the spark plug terminal
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Attach to the insulated ignition lead to prevent breakdown or electric shock
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Maintain at least 50 mm distance from other high-voltage components to reduce interference
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Always ensure proper grounding before measurement
What’s Included
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Automotive ignition probe with integrated lead
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Grounding clip
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