What can lead to inaccurate results in a resistive type test?

Impedance mismatch can lead to inaccurate results in a resistive type test because it affects how effectively signals are transmitted through the circuit. When there is an impedance mismatch, the energy is not properly transferred between components, which can result in reflections of the test signals. This reflection can distort the measurement, causing the test to yield incorrect resistance values.

In resistive testing, where the goal is to measure the resistance of a component or circuit accurately, having the right impedance ensures that the test signal is entirely absorbed and results in a clean measurement. An impedance mismatch can result from using devices with different input and output impedances or connecting cables that do not match the specification required for accurate testing. This means that addressing impedance match is critical to achieve reliable and valid test results.

Other factors, such as overheating of components, cable length variations, and transient voltage spikes, while they may influence performance or behavior during testing, do not specifically relate to the impedance matching issue as directly as it does in terms of affecting measurement accuracy.