My Weishi 1000 timegrapher arrived yesterday and I have started doing a basic health check on my collection. So far my SARB017 has returned a crazy high beat error and I have accepted that it needs attention. Moving onto my Certina DS-1 Powermatic 80 - this was acquired used and is no more than 4 years old based on initial release date. It's keeping relatively good time at -8 SPD but the thing concerning me is the amplitude is quite low at 223 degrees and just as I am writing this I have noticed the beat error has jumped way up to 2.2 ms. I have inputted the life angle at 50 degrees as per the ETA 2824-2 which is what the C07.111 is based on.
Am I rightly concerned about the movement or is the timekeeping rate king here and all is good?
Watch in question: