One tool we may use to assess the needs of your printed circuit board is something called a curve tracer signature device. This device is similar to a Source Measure Unit, which measures voltage and current at the same time. Unlike the SMU, the curve tracer typically works by applying two synchronized stimulus signals to the test device. Feel free to contact us at Global Electronic Services for more information about curve tracer signature devices and how we may use them for your printed circuit board repair and testing.