Snyder International Ltd. Shenzhen Branch Newell Electronic Technology Co., Ltd. The company is a custom 2-40 layer PCB board professional supplier of Bluetooth module circuit board, sheet main services provided are HDI boards, finger board, Bluetooth module board, half orifice, through orifice, Flex PCB, plywood and a series of plates. shape (such as frame, slot module circuit board, V-CUT) must be placed KEEPOUT layer or a mechanical layer, we can not put In the other layers, such as silkscreen, wiring layer. All required mechanical forming grooves or holes in one place Try to avoid leakage of slots or holes. If the mechanical layer and two layers KEEPOUT inconsistent shape, to do otherwise specified module circuit board proofing, another form to give effective shape, if local inner tank, with the groove of the board at the intersection of the outer shape of the segment to be deleted, to avoid leakage gongs groove module circuit board wholesale, design and holes in the slot machine layer and KEEPOUT layer is generally produced by non-copper hole (when do you want to dig copper film), if the need to address a hole in metal, special notes. Newell Shenzhen Electronic Technology Co., Ltd., we often say GPS positioning module known as user part, it's like "Radio" received as a satellite broadcast demodulation C / A-code signal to a frequency of 1575.42MHz. GPS module does not broadcast signal, a passive positioning. By pseudo-distance operation and each satellite, determined using the intersection method from the receiver to draw longitude, latitude, altitude and time correction of these four parameters, and there is the point fast, but the error is large. Initial positioning module requires at least four satellites involved in the calculation, called 3D positioning, three satellite positioning can be realized 2D, but poor accuracy. GPS module via the serial communication port constantly positioning information and auxiliary information output NMEA format for the recipient to select applications. What is the module circuit board, Shandong Province module circuit board, Newell record provided by the Department of Shenzhen-Electronic Technology Co., Ltd. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) strong, credible, a printed wiring board in Shenzhen, Guangdong and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Newell invasive and you hand into the brilliant, for a better future!