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LAUNCH
X431 GDS Scopebox Manual
Fig.4-4
4.4 Secondary-distributor ignition analysis
Connections: Plug the BNC end of secondary ignition pickup into
CH1/CH2/CH3/CH4 channel of Scopebox, then connect the
high-voltage clip to high-voltage line, and crocodile clips to ground.
After properly connected, power on and confirm the cylinder number
and ignition sequence, the interface will be shown as Figure 4-5: