The P78 attenuator is a passive 20:1 attenuator designed to enable oscilloscope measurements of primary ignition waveforms. Made from high quality PVC, it is intended for electronics enthusiasts who seek accurate measurements. Key features and benefits - Attenuation for safe oscilloscope use: the 20:1 attenuation reduces high voltage signals to a range that the oscilloscope can read, allowing measurements up to about 20 V at the scope input. - Passive and reliable: no power supply required, simple to use, and maintenance free. - Suitable for ignition work: designed for primary ignition waveform measurements with an oscilloscope. - Clear measurement path: supports straightforward connection in ignition diagnostics and testing setups. Specifications and usage - Model: P78 attenuator - Type: Passive attenuator - Attenuation: 20:1 - Material: PVC - Intended use: primary ignition waveform measurements - Important note: this attenuator should not be used for measurements other than primary ignitions Use scenarios - Automotive ignition diagnostics: connect the P78 between the ignition module and the oscilloscope to observe the primary coil waveform during crank or ignition events, helping diagnose timing or waveform anomalies. - Ignition controller development and testing: verify controller outputs by observing the attenuated signal on the oscilloscope to ensure correct switching behavior. - Educational lab demonstrations: use in a classroom or hobby lab to show how primary ignition signals behave and how attenuation affects oscilloscope readings. Tips for use - Ensure proper grounding and secure connections to minimize noise in the oscilloscope signal. - Keep leads as short as practical to reduce impedance and noise pickup when measuring high speed signals.