Abstract: A signal testing device includes an oscillograph having a plurality of first connection ports, and a signal transmitting cable. The signal transmitting cable includes a plurality of second connection ports, a plurality of coaxial cables and a SAS connector configured for connecting to a mother board. One end of each coaxial cable is electrically connected to a corresponding one of the second connection ports, and the other end is electrically connected to the SAS connector. The first connection ports are configured for engaging with the second connection ports.

Abstract: In a low voltage differential-mode signaling (LVDS) test system and method, a positive signal waveform and a negative signal waveform of an LVDS signal pair are obtained. A differential-mode high voltage, a differential-mode low voltage, and a common-mode noise are measured according to the positive signal waveform and the negative signal waveform. The measurement results are output to an output device.

Abstract: An electronic device includes a serial signal test system to test serial signals generated by a serial signal generator. A test method tests serial signals using the electronic device. The test method sets test parameters that tests serial signals. Furthermore, the test method identifies an error bit from coded bits of each of the serial signals, and identifies abnormal attribute data of each of the serial signals. In addition, the test method generates a test report according to all identified error bits and abnormal attribute data.

Abstract: An oscillograph can identify signals of a serial data bus. The signal identifying method triggers communication channels of the oscillograph, measures a rise time and a fall time for each captured signal, and sets a sender terminal (ST) and a receiver terminal (RT) for each of the captured signals according to the measured results. The signal identifying method determines the ST and RT for each of the captured signals after the oscillograph is triggered. If the determined ST of each of the acquired signals is identical to the set ST and the determined RT of the each of the acquired signals is identical with the set RT, the signal identifying process is completed and a report is generated to record the signal identifying result.

Abstract: In a low voltage differential signal (LVDS) timing test system and method, a clock signal waveform and a data signal waveform are obtained. Clock cycles are selected from the clock signal waveform. Data bits transmitted within the selected clock cycles are identified from the data signal waveform. Accordingly, bit positions of the data bits are determined.

Abstract: A test system includes a main selector, a first and a second switching connectors, a first and a second sub-selectors, and a processor. The main selector includes a number of first switches, a number of first contacts, and a number of second contacts. Each sub-selector includes a second switch, a third contact, and a fourth contact. The processor sends a first instruction and a second instruction to correspondingly control the main selector and a selected sub-selector.

Abstract: An electronic device includes a video signal detection system to measure video signals. A measurement method can measure the video signals by using the electronic device. The measurement method sets measurement parameters that are used to measure video signals. Furthermore, the measurement method generates measurement results that each corresponds to a video signal transmission channel between the electronic device and a video signal processing device. In addition, the measurement method generates a measurement report according to all the measurement results.

Abstract: A testing system for bus parameters includes a wave displaying unit and a control module connected to the wave displaying unit. The control module includes a decode unit, a testing unit connected to the decode unit, and an output unit connected to the testing unit. The decode unit is connected to the wave displaying unit. The wave displaying unit is configured for receiving an electronic signal from a bus to be tested. The decode unit is configured for decoding the electronic signal to determine if the electronic signal is valid. The testing unit tests parameters of the bus. The output unit displays testing results for the parameters.

Abstract: A signal testing device includes an oscillograph having a plurality of first connection ports, and a signal transmitting cable. The signal transmitting cable includes a plurality of second connection ports, a plurality of coaxial cables and a SAS connector configured for connecting to a mother board. One end of each coaxial cable is electrically connected to a corresponding one of the second connection ports, and the other end is electrically connected to the SAS connector. The first connection ports are configured for engaging with the second connection ports.

Abstract: A test system includes a serial advanced technology attachment (SATA) test apparatus, a number of test cables, and an oscillograph. Each test cable includes a soft sub-miniature-a wire and a sub-miniature-a connector. A first terminal of each sub-miniature-a wire is electrically fixed to an output of the SATA test apparatus. A second terminal of each sub-miniature-a wire is connected to the corresponding sub-miniature-a connector. Each sub-miniature-a connector is used to connect to an input of the oscillograph.

Abstract: An electronic device with anti-theft protection includes an alarm unit, a mercury connector, and a microprocessor connected therebetween. The mercury connector includes a body containing mercury, and first and second leads arranged on the body. The microprocessor includes a first signal terminal and a second signal terminal. The first signal terminal is connected to the first lead. The second signal terminal is connected to the second lead. When the microprocessor has entered the anti-theft mode, if the electronic device is moved, the first lead connects to the second lead via the mercury and forms a circuit path from the first signal terminal to the second signal terminal. The microprocessor starts the alarm unit to generate an alarm.

Abstract: In a low voltage differential-mode signaling (LVDS) test system and method, a positive signal waveform and a negative signal waveform of an LVDS signal pair are obtained. A differential-mode high voltage, a differential-mode low voltage, and a common-mode noise are measured according to the positive signal waveform and the negative signal waveform. The measurement results are output to an output device.

Abstract: A system and method for testing video graphics array (VGA) signal groups includes configuring a route parameter of each of the VGA signal groups, establishing a connection between an input channel and an output channel of a signal channel selector corresponding to each of the VGA signal groups, and transferring each of the VGA signal groups to the digital oscilloscope through the connection. The system and method further includes enabling the digital oscilloscope to analyze each of the VGA signal groups and acquire analysis results of each of the VGA signal groups.

Abstract: A test system includes a main selector, a first and a second switching connectors, a first and a second sub-selectors, and a processor. The main selector includes a number of first switches, a number of first contacts, and a number of second contacts. Each sub-selector includes a second switch, a third contact, and a fourth contact. The processor sends a first instruction and a second instruction to correspondingly control the main selector and a selected sub-selector.

Abstract: In a low voltage differential signal (LVDS) timing test system and method, a clock signal waveform and a data signal waveform are obtained. Clock cycles are selected from the clock signal waveform. Data bits transmitted within the selected clock cycles are identified from the data signal waveform. Accordingly, bit positions of the data bits are determined.

Abstract: A system and method for identifying a peripheral component interconnect express (PCIe) signal obtains a waveform of the PCIe signal. A pre-emphasis value of the PCIe signal is calculated according to the waveform. Accordingly, a signal type of the PCIe signal is determined.

Abstract: An electronic device includes a serial signal test system to test serial signals generated by a serial signal generator. A test method tests serial signals using the electronic device. The test method sets test parameters that tests serial signals. Furthermore, the test method identifies an error bit from coded bits of each of the serial signals, and identifies abnormal attribute data of each of the serial signals. In addition, the test method generates a test report according to all identified error bits and abnormal attribute data.

Abstract: A oscillograph and a signal integrity test method are provided. The oscillograph measures a serial data bus to obtain captured signals transmitted by each communication channel of the oscillograph. By identifying a time sequence for the captured signals transmitted by each communication channel, a test signal is determined. The oscillograph measures a clock frequency of the test signal, sampling a part of the test signal, and testing the part according to pre-set test items. If a predetermined number of samples of the test signal is tested, the oscillograph constitutes a completed signal integrity test of the serial data bus and a test report is generated.

Abstract: An electronic device includes a video signal detection system to measure video signals. A measurement method can measure the video signals by using the electronic device. The measurement method sets measurement parameters that are used to measure video signals. Furthermore, the measurement method generates measurement results that each corresponds to a video signal transmission channel between the electronic device and a video signal processing device. In addition, the measurement method generates a measurement report according to all the measurement results.

Abstract: An oscillograph can identify signals of a serial data bus. The signal identifying method triggers communication channels of the oscillograph, measures a rise time and a fall time for each captured signal, and sets a sender terminal (ST) and a receiver terminal (RT) for each of the captured signals according to the measured results. The signal identifying method determines the ST and RT for each of the captured signals after the oscillograph is triggered. If the determined ST of each of the acquired signals is identical to the set ST and the determined RT of the each of the acquired signals is identical with the set RT, the signal identifying process is completed and a report is generated to record the signal identifying result.