Pico Secondary ignition pickup lead - capacitive with BNC+ connection. Automatically detected by Pico software.
Due to the high voltages involved in secondary ignition systems, it is not possible to make measurements by direct connection. Attempting to make a direct connection will almost certainly damage the measuring instrument.
The TA397 is a capacitive pickup that simply connects around the insulation of an ignition circuit component such as a plug wire. This avoids the need for direct connection.
The TA397 comes with a shielded 1.8 m (6 foot) lead. It is suitable for use with conventional ignition systems and most HEI and DIS systems.
Although ideal for use with a PicoScope automotive oscilloscope, the TA397 pickup can also be used with most other makes of oscilloscope provided they have a waveform invert option.
How to use the TA397 Secondary Ignition Pickup
Safety precautions before use:
Keep the lead away from pulleys and other moving parts
Keep the lead away from heat
Never let the pickup come in direct connection with primary or secondary voltage (otherwise the PicoScope may be damaged)
Always use the ground clip
Do not let the metal portion of the pickup contact a ground
Connecting the TA397:
Connect the TA397 to the automotive oscilloscope before connecting to the vehicle
Connect the ground clip to a good ground on the vehicle
Connect to vehicle
Standard Ignition: clip the pickup around the coil wire (or one plug wire at a time)
Integrated coil: clip the pickup around the central location on the distributor cap
DIS: clip the pickup around one plug wire at a time