The PCBA test stand, as the name suggests, is a device for testing the finished PCBA. However, many PCBA test racks now only add a few pressure plate buckles to the rack, and use thimble and pressure plate buckles to fix the PCBA. In the PCBA function test, the PCBA is pressed into the pressure plate buckle with both hands for the test, but this test method often causes the PCBA to be unevenly stressed or not pressed down in place, resulting in poor contact between the test pin and the PCBA. It also largely affects the test efficiency and accuracy. If the PCBA is pressed down with too much force, it is not only easy to deform or damage the PCBA, but also to damage the test pins of the test frame.

Therefore, the best solution to the above test problems is to make a PCBA test frame. So how is the PCBA test stand made? Let's take a look at the following Sanjing belts.

Before making the PCBA test frame, in order to make a test frame that perfectly meets the PCBA testing requirements, it is generally necessary for the PCBA processing plant to provide Gerber documents and PCBA samples. After determining the plan based on the Gerber documents, you need to prepare hardware materials (electronic components); related peripheral circuits and equipment; frame materials (such as acrylic panels), glue, electric batches, screws, wire materials, etc., to determine the production plan.

After the above materials are prepared, the structure of the test rack is determined and checked. After checking the structure of the test frame, we must consider the problems of wiring:

1. The opening of the wire must be opened within 2mm, and the opening of the wire and the wire position of the test pin must be tinned first. 2. The welded wires must not be loose. 3. Separate the strong and weak wires in the test rack and tie them together. 4. The connection of the ammeter and the voltmeter must be installed with a multimeter pen to ensure the safety of the operator. 5. The signal wire connected to the high-frequency product model must be shielded to ensure the safety of the external network. 6. If there is an AC adapter in the test frame, the AC adapter shell must be grounded. 7. The test frame must be equipped with a fuse, and cannot be replaced by wires or other wires. The replacement of the fuse is determined by the current of the tested model. The replacement principle is generally 8-10 times the working current of the product.

The above is an introduction to the relevant requirements for the production of PCBA test racks, I hope it can be helpful to everyone!