摘要:
An apparatus for adjusting a differential probe includes a regulator arranged therein capable of adjusting a distance between two tips of the probe. The probe is supported on the apparatus. The apparatus includes a rotatable shaft and a rotatable disk. The rotatable shaft engages with the regulator of the probe. The rotatable disk is mounted surrounding the rotatable shaft and rotatable together with the rotatable shaft. An angular ruler or a radian ruler is described on an outer surface of the rotatable disk to indicate a rotation angle or a rotation radian of the rotatable shaft, therefore the distance between the two tips of the probe are accurately adjusted.
摘要:
A clamping apparatus includes a motor, a first cone gear secured to a shaft of the motor, and two clamping bodies attached to opposite sides of the motor. Each of the clamping bodies includes a second cone gear meshing with the first, a threaded post fixed to the second cone gear, a carriage threadedly connected with the threaded post, and a clamp arm fixed to the carriage. The motor rotates the first cone gear, and in turn the second cone gears and the corresponding threaded posts. With the rotation of the threaded posts, the carriages move towards or away from each other, whereby the clamp arms cooperatively acquire an object between the clamp arms, or release the object therefrom.
摘要:
A system for operating a differential probe which includes a first metal extension and a second metal extension having the same structures is disclosed. Each of the metal extensions includes a rotatable arm, a rotatable base, and a contact end. The rotatable base and contact end of each of the metal extensions extend from two ends of the corresponding rotatable arm at an angle, the contact ends and the rotatable bases of the metal extensions are parallel to each other. The system controls a mechanical arm to adjust a vertical distance between the contact ends to be equal to a required vertical distance by rotating the first metal extension around the rotatable base of the second metal extension clockwise by a rotated angle, and rotating the second metal extension around the rotatable base of the first metal extension counterclockwise by the rotated angle.
摘要:
In a method for testing serial attached SCSI (SAS) ports of a server using a computing device, the computing device connects to an oscilloscope and a mechanical arm that is equipped with a test fixture having a probe. The mechanical arm controls the probe to be plugged into one of the SAS ports. The method adjusts an intensity grade of the SAS signals through the SAS port, and controls the SAS port to generate a SAS signal corresponding to the intensity grade. The test fixture obtains the SAS signal from the SAS port, and the oscilloscope measures test parameters of the SAS signal. The method analyzes values of the test parameters to find an optimal SAS signal, determines an intensity grade of the optimal SAS signal as a driving parameter of the SAS port, and accordingly generates a test report of the SAS ports.
摘要:
An actuating mechanism includes first and second hollow outer shafts, two rotating wheels located between the first and second outer shafts, and an inner shaft received in the second outer shaft. Each of the first and second outer shafts forms a connecting portion at one end thereof. Each connecting portion defines two receiving holes. Each rotating wheel includes a body and a rod extending through the body. The bodies of the rotating wheels are in contact with each other. Two ends of the rod of each rotating wheel are correspondingly received in the receiving holes of the first and second outer shafts to connect the first and second outer shafts together. One end of the inner shaft contacts the rod of one rotating wheel. The inner shaft is rotatable in the second outer shaft to drive the two rotating wheels to rotate.
摘要:
In a method for optimizing an order in which certain points on a circuit board can be tested and evaluated, a coordinate system is established in a circuit diagram of a circuit board, and at least one locating point is preset. When an operator selects a signal path routing within the circuit diagram, the method can display the testing points in the selected signal path routing on a display device. After calculating the distance between each of the testing points and each of the at least one locating point, a group of distances is obtained. By comparing the distances, the minimum distance can be determined from the group of distances. The method further optimizes the order of the testing points according to the distance between each of the testing points and the locating point that consists of the minimum distance.
摘要:
A method for configuring setting values of oscilloscopes selects manufactures for a first oscilloscope and a second oscilloscope, and sends a command of acquiring a type respectively to the first oscilloscope and the second oscilloscope using the control codes of the selected manufacturers, to determine if the selected manufactures are the actual manufacturer. The method sends a command of acquiring setting values, respectively to the first oscilloscope and the second oscilloscope, using the control codes of the selected manufacturers, receives and compares the setting values of the first oscilloscope and the second oscilloscope. The method changes the setting values of the second oscilloscope to be same or similar with the first oscilloscope, and writes the changed setting values into the second oscilloscope.
摘要:
An exemplary actuating mechanism includes a driving shaft and a driven shaft. The driving shaft includes a connecting end. Engaging blocks are formed on the connecting end with a clearance defined between each two neighboring engaging blocks. The driven shaft includes a pivot end. Protruding blocks are formed on the pivot end with a gap defined between each two neighboring protruding blocks. The driving shaft is connected with the driven shaft via the engaging blocks of the connecting end respectively engaged in the gaps and the protruding blocks of the pivot end respectively engaged in the clearances.
摘要:
A computing device and a method for scattering parameter equivalent circuit reads a scattering parameter file from a storage device. A non-common-pole rational function of the scattering parameters in the scattering parameter file is created by applying a vector fitting algorithm to the scattering parameters. Passivity of the non-common-pole rational function is enforced if the non-common-pole rational function does not satisfy a determined passivity requirement.
摘要:
An electronic device and method for inspecting electrical rules of circuit boards includes selecting at least two design files that record electrical rules of the circuit boards and searching the electrical rules in the selected design files using preset parameter keywords. Same electrical rules of the selected design files are acquired by comparing the electrical rules in the selected design files. The same electrical rules and corresponding parameter values are input to a comparison table, and the comparison table is output.