PCBA also has shelves! Do you know about the test rack?
PCBA test rack is what we focus on today. PCBA test rack refers to an important equipment for testing PCBA finished products. Generally speaking, from the beginning of the production of the test rack, the company needs to provide Gerber files and PCBA samples. It is a testing tool that requires very careful operation. Today we will learn about its production steps and requirements.
The PCBA test frame only needs to install a few pressure plate buckles on the test frame, and use the ejector pins and pressure plate buckles to fix the PCBA. When performing the PCBA functional test, press the PCBA into the pressure plate buckle with both hands to perform the test. Due to uneven force on the PCBA or insufficient pressing down, poor contact between the test needle and the PCBA is likely to occur, which greatly affects the test efficiency and accuracy; if too much force is used to press down the PCBA, the PCBA will be easily deformed or damaged. It is also easy to damage the test pins of the test rack, resulting in greater losses.
Material preparation After the plan is determined based on the data, hardware materials (electronic components), related additional peripheral circuits, equipment, frame materials (such as acrylic panels), glue, electric screwdrivers, screws, wire materials, etc. need to be prepared to produce plan finalization materials. Test rack structure Determination and inspection of test rack structure Wiring requirements 1. The wire opening needs to be opened within 2mm. First add tin to the wire opening and the test pin tin line. 2. The welded wires must not be swinging or loose. 3. Arrange the strong and weak wires separately in the test rack and tie them with wire ties. 4. The connectors of the ammeter and voltmeter must be installed with multimeter probes. Banana plugs cannot be installed to test current, voltage and other functions to ensure the safety of the operator. 5. The signal lines connected to high-frequency product models must use shielded wires to ensure safe grounding of the external network. 6. If there is a furnace in the test frame, the housing of the furnace must be grounded. 7. The test frame must be equipped with a fuse, which cannot be replaced by wires or other wires. Remove the 13A fuse from the original plug. When replacing the fuse, pay attention to how much current the model under test requires. The replacement principle is determined by the 8 working current of the product. -10 times is enough. Point selection quality inspection The selection of points must follow the principles of comprehensiveness, effectiveness and economy.