After receipt of your unit, we will use our Test and Evaluation Tools, the same tools that we use during the manufacture of new equipment, along with the notes you have enclosed about the problem you experienced. We will perform as many tests as the unit to be repaired will allow. In some cases such as Multiplexers and Receivers, the units over time have ‘drifted’ out of specification degrading performance. A simple re-calibration is all that is necessary to effect repair on the unit. In other cases, components may need to be replaced. After parts are replaced, the unit will receive full original equipment testing, calibration and burn-in exactly like new units do!