Premium Test Leads
You’ve got the best oscilloscope - Now get the best test leads
Our premium test leads are color-coded so that the color of the lead in the engine bay matches the color of the on-screen waveform in PicoScope Automotive – never again will you waste your time wondering which lead is which.
Our premium leads are fully screened to minimize noise pickup so you can have complete confidence in the signal that you are measuring.
The 5 m leads come with fixed 2.5 m ground extensions and are designed for working on larger vehicles.
- 3m or 5m long
- Fully shielded
- Insulated BNC at scope connection
- Shrouded / stacking banana plugs
Why are test leads special?
Oscilloscope test leads might look like any other piece of wire but they are highly engineered to minimise noise and to ensure that the signal that you are acquiring is not distorted.
A special coaxial cable is used to try to ensure that the signal reaches the oscilloscope without modification. A coaxial cable is a thin conductor enclosed in an insulator (with defined characteristics also called a dialectric) which in turn is surrounded by a conductive shield (ground) and the entire cable is insulated. The BNC plug used to connect the cable to the scope has one pin connected to the inner conductor and the shield connection completely encloses it.
Care and feeding
The inner conductor (centre core) is usually very thin (improves performance) and can be damaged if the cable is twisted. Always roll-up and unroll your test leads (and any leads with BNC connectors e.g. scope probes) without twisting them to prolong their life. Don't pull hard on the cables and avoid bending them sharply (small bend radius). If you treat them well, your test leads will reward you with a lifetime of service.