Patent ID: 7969158

Claim:
A noise-reduction method for processing a test port ( 3 ), which can be applied to a test target for testing or burning software, the method comprising: providing a connection zero-Ohm resistor unit ( 2 ), a device under test (DUT) ( 1 ), a grounding zero-Ohm resistor unit ( 2 A), and a test port ( 3 ), wherein each of the connection zero-Ohm resistor unit ( 2 ) and the grounding zero-Ohm resistor unit ( 2 A) comprises a plurality of zero-Ohm resistors ( 21 - 26 , 21 A- 26 A), wherein each zero-Ohm resistor ( 21 A- 26 A) in the grounding zero-Ohm resistor unit ( 2 A) has a ground end connected to ground and a floating end; electrically connecting a first end of each zero-Ohm resistor ( 21 - 26 ) in the connection zero-Ohm resistor unit ( 2 ) with the DUT ( 1 ) in series, and electrically connecting a second end of each zero-Ohm resistor ( 21 - 26 ) in the connection zero-Ohm resistor unit ( 2 ) with the test port ( 3 ); and disabling the connection of the first ends of the zero-Ohm resistors ( 21 - 26 ) in the connection zero-Ohm resistor unit ( 2 ) and the DUT ( 1 ), and connecting the second ends of the zero-Ohm resistors ( 21 - 26 ) in the connection zero-Ohm resistor unit ( 2 ) to the floating ends of the zero-Ohm resistors ( 21 A- 26 A) in the grounding zero-Ohm resistor unit ( 2 A) to reduce noise generation.