Economical Debug Station For debugging 3G modem

Sammanfattning: Communication world is growing with an incredible high speed. Every day comes new technologies and give us more access and opportunities in work and life. One of the most important branches is small cells and similar product families. It extends from a simple telegraph codes to 3G W-CDMA and 4G LTE networks. It offers mobile network operators a cost-effective alternative to macro-only deployments for meeting growing coverage and capacity demands. Making products and bring it to market is one part of the job. It is important that product be fault free and reliable. Due to this comes our need for test and debugging. Test and debugging have high value in massive production. This research is subjected to a small cell modem, this modem has different parts like: - Download link and upload link through fiber optic cables for CPRI. - Network part which include Wi-Fi and LAN. - GPS module. - eUSB for customization of modem firmware. - Com, I2C and JTAG ports for debugging or reprograming the modem. We need to develop a debug station to make debugging easier on this modem and having clear compare results. It is important to have a CPRI tester and GPS signal simulator in our debug station. Beside all of these we need to make free standalone debug station which save us money and time, and from other side it should be as accurate as possible which make it reliable. One of important tests which should get done on test object is Boundary scan in debug station. Debuggers mentioned that it is hard to stop the test process in each level and from other side it is hard to find the faults with pass/fail results. In this project we try to implement all necessary tests in one and same debug station. Debuggers use separate stations for function test and boundary scan test and eUSB programing, with help of this debug station we have all of these 3 main tests in same station and debugger can work independently to repair the boards without interfering in production process or waiting to get time to use function test station or boundary scan tester . One of the Results is saving time from debugger’s side and this is more effective for company to save money and give faster and better repair service. We should use calibrated and the most accurate tools for testing to get best result.