The author discusses the issue with SyncServer S200 refusing to lock to GPS due to the GPS Week Number Rollover (WNRO) problem. The solution involves using the right GPS antenna and addressing the outdated GPS module. The author presents a unique hardware solution using an interposer to correct the GT-8031 module’s date and time information to fix the synchronization issue. This custom hardware method is a cost-effective alternative to buying expensive aftermarket replacement modules. The author also suggests a potential software-only solution for future updates. The final result shows improved accuracy in the 10 MHz output. The thorough build instructions and detailed explanations make this a valuable resource for those facing similar GPS synchronization challenges.
https://tomverbeure.github.io/2024/08/18/Fixing-the-Symmetricom-S200-GPS-Week-Number-Rollover-Problem.html