binary protocol

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Trimble/Symmetricom UCCM GPS Receiver 50-pin connector pinouts and protocol reverse-engineering

Introduction

This page describes the pinouts of 50-pin connector, avaliable at "Trimble 57963-C" and "Symmetricom UCCM 089-03861-02" boards, which can be bought on Ebay. They have no direct NMEA support, but have own binary protocol and additional signals, that avaliable on this connector. This receivers are used for DAB SFN operation as alternative for Ublox-LEA-M8F. The main reason of this work - is to receive UTC time from it and get the flags to find that receiver is ready to provide stable 10MHz and 1PPS signals.

 

 

 

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