Abstract: In an electronic device and method of protecting software, a software program of the electronic device is invoked. The media access control (MAC) address of the electronic device and a serial number of a hard disk drive that stores the software program in the electronic device are searched. The MAC address and the serial number are compared with MAC addresses and serial numbers included in the software program, to determinate whether it is licensed to run the software program in the electronic device. Usage logs of the software program are further obtained to determine whether running of the software program in the electronic device is expired.

Abstract: 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.

Abstract: A robot arm includes a circular rack, an elongated first mounting member attached to the rack, and a second mounting member attached to the first mounting member. The first mounting member extends in a radius direction of the rack and moves in a circular trace along the rack. The second mounting member slides relative to the first mounting member along the radius direction, thereby defining a polar coordinate system in a plane defined by the rack to allow the second mounting member to flexibly locate at any desired positions in the plane.

Abstract: In a method for analyzing integrality of serial attached SCSI (SAS) signals using a computing device, the computing device connects to a signal measuring device and an electronic device. A group of test parameters, an intensity grade of a SAS signal, and a total number are set for evaluating integrality of the SAS signal. The intensity grade of the SAS signal is adjusted through an SAS interface of the electronic device. The signal measuring device measures test parameters of the SAS signal, and a test number is recorded when the test parameters of the SAS are measured. The method analyzes the integrality of the SAS signal to find an optimal SAS signal when the test number equals the total number, and determines an intensity grade of the optimal SAS signal as a driving parameter of the SAS interface.

Abstract: An exemplary antistatic device includes an electricity receiving part and an electricity discharging part. Guiding portions protrude from the electricity receiving part. The electricity discharging part is located at a side of the electricity receiving part, and oriented toward and spaced from the guiding portions of the electricity receiving part. The electricity discharging part is electrically conductive and capable of being grounded. Static electricity accumulated on the electricity receiving part is removable to the electricity discharging part via the guiding portions.

Abstract: Parameters of a radio frequency filter can be changed by changing structure of each component of the filter. Material of each component, diameters of each of magnetic cylinders, density of each of conductive coils, thickness of a dielectric layer, and thickness of an insulation tube can be changed. When any component needs to be replaced, each cover is rotated, with connection partitions move to two slots of a resisting portion, to detach the filter.

Abstract: A method for testing a characteristic impedance of a signal path routing of a printed circuit board (PCB) controls the test device to test a characteristic impedance of the signal path routing of the PCB to get test data of the signal path routing of the PCB. The method further analyzes the test data of the signal path routing of the PCB get analysis results, generate a test report for storing the test data of each signal path routing of the PCB and the analysis results if all signal path routings of the PCB have been tested.

Abstract: In a method for regulating a mechanical arm using a control computer. The method obtains a first position and a second position of a center of an image plane of an image capturing device on the mechanical arm by controlling movements of the mechanical arm, and calculates a movement vector from the first position to the second position. The method further calculates a regulating angle according to the movement vector and an axial vector of the mechanical arm, and moves the mechanical arm according to the regulating angle such that the axial vector is perpendicular to a measurement plane determined by the first object and the second object.

Abstract: A robot arm includes a support arm, an adjusting rod and a detecting unit. The adjusting rod rotatably extends through the support arm. The detecting unit is attached to the adjusting rod. The detecting unit includes an image capture device and a probe device. The image capture device captures images of a workpiece. The probe device includes a driving device and a probe. The driving device may drive the probe to move between a first position where the probe does not visually prevent images of the workpiece being captured by the image capture device, and a second position where the probe does block the images of the workpiece being captured by the image capture device.

Abstract: 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.

Abstract: A system and method uses a measurement control device and a measurement machine to measure pin voltages of electronic components installed in an electronic device. The measurement control device controls a mechanical arm of the measurement machine to move to the pins of the electronic components according to coordinates of the pins. A voltage probe installed on the end of the mechanical arm can measure voltages of the pins automatically.

Abstract: A circuit board includes a current balancing unit that receives a number of current values from ammeters. A minimum current value between the current values is determined by the current balancing unit. Resistance of one or more variable resistors of the current balancing unit is adjusted by the current balancing unit to make the current value from one or more the ammeters serially connected to the one or more the variable resistors to be substantially equal to the minimum current value.

Abstract: An exemplary guideway mechanism includes two branches, a group of connecting blocks, and a supporting bracket. The group of connecting blocks includes four connecting blocks arranged at four corners of an imaginary square and connecting the supporting bracket. Each branch includes two parallel rails. Adjacent ends of the rails of each branch respectively connect two adjacent connecting blocks.

Abstract: A system and method for testing derating performance of a component obtains a component list, a pin list, and a standard derating list of the electronic device from a storage. The system and method further receives parameters of each component, the parameters of each component comprising voltages of two pins of the component and a working temperature of the component, calculates a working voltage and a derating ratio of the component according to the parameters. The system and method also analyzes the working voltage and the derating ratio of the component to get analysis result, generates a test report comprising the derating ratio, the working temperature, the analysis results of each component in the component list, and storing the test report in the storage.

Abstract: A test probe includes a filtering unit and a contact unit. The filtering unit includes an inductive component, a capacitive component, and an insulation component insulates the inductive component from the capacitive component. The contact unit contacts a test point to get a test signal. The filtering unit filters noise from the test signal. The test probe can be assembled and disassembled easily, and parameters of the filtering unit can be changed by changing structure of each component.

Abstract: 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.

Abstract: An exemplary probe apparatus includes a fixture, a first probe assembly, a motor, a lead screw, two guide members, a second probe, and a reduction gear unit. The first probe assembly is fixedly attached to the fixture and includes a first probe. The motor has a drive shaft attached to the fixture. The lead screw is coupled to the fixture. The two guide members are attached to the fixture and parallel to the lead screw. The second probe assembly is moveably attached to the lead screw and the at least one guide member, and includes a second probe. The reduction gear unit is coupled to the drive shaft and the lead screw to transmit power from the motor to the second probe assembly through the lead screw. The second probe assembly is configured for moving the second probe towards or away from the first probe along the two guide members.

Abstract: A method of automatically testing a mobile communication terminal selects a communication frequency band for testing the mobile communication terminal. The mobile communication terminal switches to the selected communication frequency band. One or more service modes, of the mobile communication terminal, which need to be tested under the selected communication frequency band are selected, and a test sequence of the one or more service modes is set. The mobile communication terminal using one of the service modes. Test data of the mobile communication terminal is obtained according to a preset use duration, a test frequency and the test interval of each service mode. A report is generated using the test data.

Abstract: A signal integrity test system and method uses an oscilloscope to test a signal on each test point of a transmission line, obtains test parameter values of the signal on each test point, and compares the test parameter values with preset standard values. If any test parameter value does not match a corresponding preset standard value, a time-domain reflectometer is used to test an impedance value of the test point. If the impedance value matches a standard impedance value of the transmission line, the system and method determines the signal on the test point satisfies integrity requirements.

Abstract: An electronic device and method of automatically testing the transmission lines of a PCB. Design requirements of transmission lines are predetermined and a wiring diagram is acquired according to a designated wiring diagram storage path. Some basic parameters of each transmission line of the diagram are applied in excluding one or more transmission lines which may not meet the design requirements, then, the excluded transmission lines are marked and/or highlighted. A report of the transmission lines is generated using a report template.