Test tools Different hardware tests are more carried out using hardware, such as oscilloscopes. Software testRelatively speaking, it's just data tools, or software. Stability of test results Different hardware tests may have different test results under the same conditions (such as the same temperature). If the input of software tests is the same, the output is the same if no random data is introduced.
Different testing purposes, different testing methods. The purpose of testing is different: the hardware test mainly guarantees the reliability of the hardware, and the production test mainly guarantees the inspection of the assembled equipment. The testing methods are different: hardware testing is mainly for the hardware itself and the environment, and production testing is mainly for the board of the deviceTest.
Hardware testing is the process of evaluating and verifying the functions and performance of hardware devices or systems. The purpose of hardware testing is to ensure the normal operation of hardware equipment and meet the specified quality standards. Through testing, defects or faults in hardware design can be found and repaired, thereby improving the reliability and stability of hardware. Hardware testing usually includes functional testing, performance testing, compatibility testing, reliability testing and life testing.
Hardware testing is a test for the hardware itself and the environment, such as aging test, version life test, failure rate test, etc. Ensure hardware reliability>
2, offline detection of IC chip pin to ground between the positive and negative resistance value. It is compared with a good IC chip to find the fault point. On-line detection of DC resistance is the same as offline detection.
3, chip detection overview: Multimeter manual This article will introduce how to use a multimeter to detect the resistance of the chip, file voltage, and select a continuity! A slightly larger range than expected.
1. Microscopic imaging equipment: mainly includesOptical microscope, scanning electron microscope, etc., for the observation and analysis of material microstructure images. Chemical analysis equipment: mainly includes electron probe, energy spectrometer, Raman spectrometer, etc., used for chemical composition detection and analysis. Physical performance test equipment: mainly resistivity tester, thermal expansion coefficient tester, etc., used for testing and analysis of material physical parameters.
2, welding machine: welding machine is used to connect the chip to the packaging material. This device can be welded using hot pressing or ultrasonic welding. Fatigue tester: Fatigue tester is used to test whether the chip will fail after a long time of use. This device can simulate the stress and temperature environment in real use. Chillers: Chillers are used to cool chips to get more accurate results when testing.
3, in general, the probe station is the soul of the semiconductor inspection tool, it works with the test equipment to ensure the quality control of the chip, is an indispensable part of the wafer manufacturing process. Kronos Technology's ultra-precision air float motion platform, with its excellent accuracy and stability, undoubtedly adds efficient and intelligent wings to wafer inspection. Choosing the right probe station will undoubtedly bring significant benefits to the entire semiconductor industry chainThe promotion of.
4, the main semiconductor packaging and testing equipment includes: thinning machine. Thinning machine is to thin the wafer substrate by thinning/grinding, improve the chip heat dissipation effect, thinning to a certain thickness is conducive to the later packaging process. Four probes.
1, offline detection of IC chip pin to ground between the positive and negative resistance value. It is compared with a good IC chip to find the fault point. On-line detection lineThe detection method of current resistance is the same as off-line detection.
2, chip detection overview: Multimeter manual This article will introduce how to use a multimeter to detect the resistance of the chip, file voltage, and choose a continuity! A slightly larger range than expected.
3, online detection: to disconnect the power supply on the circuit board to be tested, the internal voltage of the multimeter shall not be greater than 6V, when measuring, pay attention to the influence of the periphery. Such as potentiometer connected with IC chip, etc. Ac operating voltage: Use a multimeter with dB file to measure the AC voltage approximation of the IC. If there is no dB file, the pen string can be listed in frontInsert a 0.1-0.5μF isolated DC capacitance. This method is suitable for ics with relatively low operating frequency.
4. First, make sure the computer is turned off and disconnected from the power supply. Open the computer case and locate the memory power chip. Insert the red probe of the multimeter into the positive pin of the chip and the black probe into the negative pin. Make sure the probe is firmly in contact with the metal pins of the chip and that it does not touch anywhere else. Next, adjust the multimeter to the DC voltage measurement mode.
5, to measure this chip first turn the digital multimeter range switch to the diode[Note: when measuring on the road, it must be tested in a static condition] otherwise it will damage the table.
6, motherboard maintenance and maintenance methods and IC good or bad judgment method Check board method: 1. Observation method: there is no burning, burning, foaming, plate surface broken line, socket rust. 2. Meter measurement: Whether +5V, GND resistance is too small (below 50 ohms). 3. Power inspection: For the clear broken board, the voltage can be slightly increased by 0.5-1V, and the IC on the board can be rubbed by hand after starting up to make the chip in question hot, so as to perceive it.