The test jig has two functions:
1) to check that the preamp can hold voltages applied to the power rails, and that the supply currents drawn are within tolerance
2) to provide a fast electronic pulse that is applied to the input of the preamp and compare the output waveform to an expected shape. The tester is also designed to be operated conveniently and quickly.
At C-Alley, we do ofen customised test jig design and manufacturing. All the PCBA products must been 100% full tested.