Also, sometimes the software uses the wrong acoustic peak to determine amplitude and will flip back and forth between accurate value to erroneous value of amplitude. The amplitude accuracy depends directly on the setting the proper lift angle in the software. The graphical displays are very useful to diagnose issues with movements.
I find the rate and beat error measurements are very good using this software. Using the laptop's built-in microphone the results are just as good as long the watch is loud enough to be picked up by the microphone/software. To be fair, the software is also installed on my laptop. For example, with my current computer/sound card the calibration offset is 2.4 seconds. I instead use a 1 pulse per second signal from a GPS receiver I have setup for another experiment of mine. I use an alligator clip third hand to hold it close the the movement.įor calibration, I haven't tried the proposed method for the software. The microphone is a Panasonic capsule mounted on a off-the-shelf microphone amplifier pcb. It's very homebrew for sure but it works well for me.
Watch timegrapher for windows full#
My Excel graph for timing results over 48 hours (why Omega recommends a full wind every 24 hours): My Excel graph for timing results in 6 positions looks like this: I knew to test at full wind (after 1 hour) and also after 24 hours I learned that the Omega standard is to wind the watch fully, then wait 1 hour for the movement to "settle" before testing I was very careful to avoid background noise, so I did all testing in my office avoiding any readings where special noise occurred
I tested my Speedmasters and recorded values into an Excel spreadsheet so I could graph and compare. I also have a solid understanding of variation and measurement (in)accuracy as I've spent 2 decades in automotive testing and manufacturing. I fully recognize that such a device can open up a highly critical person to information that could 'ruin' a nice watch if the results aren't within perfect standards. I got it purely out of curiousity and a desire to generate some simple data. I bought a Weishi No3000 about a year ago for around $300 USD.
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