A module is a complete assembly of an electronic device, made on one small board and performing one or more rarely several functions. A video card, sound card and memory strip (DIMM) are also examples of modules.
Instructions
Step 1
Plan the distribution of device functions by modules. Strive to optimize this distribution so that each of the nodes has as few pins as possible and, if possible, in the absence of any of them, the rest continue to work independently. Decide which of the parts is better to leave outside the modules, on the so-called cross-board or general board. A computer motherboard is also an example of a backplane.
Step 2
Draw up schematic diagrams of each of the modules. Consider the location of the components on the board and the order of connecting the connector pins to its circuits. Do not place pins between which there is a significant potential difference, or the capacitive effect of which should be reduced on each other. Sometimes it is advisable to connect not one, but several pins to a common wire or power bus.
Step 3
Design the printed circuit boards of all modules, and then assemble them according to the diagram. If you need to make a single copy of the device, you can use universal printed circuit boards. Equip each of the assemblies made with connectors.
Step 4
Design the location of the mating connectors on the backplane in such a way that the modules do not touch each other, taking into account the fact that some of them protrude large parts. Install all other components on the backplane. Insert the modules into the backplane, and then additionally fix them from above with brackets made of insulating material or in another way. At the same time, do not bend the boards too much.
Step 5
If one of the modules fails, de-energize the device, replace the unit with an identical but serviceable one, and slowly repair the removed module. When a device arrives for repair, in which the same module has failed, replace it with a repaired one, and repair the removed one, and so on in a circle. This solution makes it possible to speed up the maintenance of equipment arriving for repair, returning it to the customer almost immediately.
