AN INVESTIGATION OF TIME TRANSFER ACCURACIES OVER A UTILITY MICROWAVECOMMUNICATIONS CHANNEL

This paper discusses measurements made on a timekeeping system using s tandard IRIG-B time code and commercially available equipment. Two que stions are addressed. Can this technique reliably transfer time accura cies of one millisecond and accuracies of 5 to 50 microseconds? A new method of propagation delay measurement using two synchronized time co de generators is introduced. These measurements are compared with pred ictions of delay and measurements made with a commercial communication s test set used in a new manner. These results could be used to predic t the response time of protective relay communications channels. Discu ssion of the differences between the methods is given.