Electronic Support measures (ESM) system is used to measure the parameters of radar emission in the operating frequency range along with pulse width, pulse repetition frequency, antenna scan period, signal strength, direction of arrival and more. These systems are installed in warships, aircrafts and submarines. The radar parameters along with their threat levels are to be made available to operator during the peace and wartime operations. In the modern ESM systems these parameters are to be measured instantaneously with great accuracies and instantaneously for tactical purposes. Different techniques are used for measuring different parameters of radar signals. Receiver measure these parameters in various parallel circuits and ensure the entire measured data is available less than 200ns for each pulse which is required for further processing. The BITE processor controls various operations of these parallel receivers. It controls the operation of system to ensure reliable performance. The BITE processor receives the signal from the ESM processor and generates it in the specified number of bits. It also interfaces ESM processors and antenna processors.