When detonation cords are used in explosive trains such as explosive circuits, the output performance can be obtained by destructive tests of matching samples from common production lots. In this paper the shockwave pressure testing method for Detonating Cords is studied. Two types of sensors are used to test the shockwave pressure. One is a thin film Mn-Cu sensor which is a standard testing method for output performance of explosive devices. The other sensor is a high pressure sensor with a microcircuit in it; this sensor can be used many times. The testing results are verified in the detonation equation.