Ignition timing measurement

# Plug-In "Ignition phase measurement"

The plug-In "Ignition phase measurement" will display ignition timing advance in real time.
RPM and spark plug firing data are calculated based on input from the sync probe Sync connected to the timing cylinder. Piston TDC data is calculated from the signal received from the pressure transducer Px installed in place of the spark plug for the timing cylinder.

- The pressure transducer is connected to analog input ¹1 on the USB Autoscope II;
- Connect the plug wire for the timing cylinder to a spark tester with at least a 5 mm gap;
- Attach the sync probe Sync (black color) to the plug wire for the timing cylinder;

Installation of the pressure transducer, sync probe and a spark tester.

- Connect the sync probe lead to the In Synchro on the ignition system adapter Ignition Adapter;
- Connect in one place on the engine block the black "crocodile" clips from the pressure transducer and the ignition system adapter;
- Connect the red "crocodiles" clips from the pressure transducer and the ignition system adapter to the positive terminal of the vehicle battery;
- Start the program USB Oscilloscope;
- In "Control" select "Load user preset", select "Ignition_Timing";
- Start the engine. Once the idle speed has stabilized the USB Autoscope II will display engine RPM as well as ignition timing.
  On a DIS system it may be necessary to invert the signal coming from the high voltage adapter connected to the first cylinder (this is because on a DIS system the companion cylinders will have opposite firing voltages). If the green LED on the Ignition Adapter is on, click the button for a inverted signal in the adjustment panel for channel ¹2, and click the button for a inverted signal in the adjustment panel for plug-In . If the LED is red, no adjustment is necessary .

| Warning!
Do not run the engine for more than 3 minutes with the pressure transducer installed. Damage to the catalytic converter and/or the pressure transducer may occur.

The displayed signal can be recorded. Select "Record". The recorded waveform can be analyzed, and, if desired, saved. To do so, select "File Save As.." in the "File" menu.