/fa/ - Fashion

>>15086728
Here's a measurement of an Omega 720Hz tuning fork. The signal is even noisier than the accutron, so instead of trying to trigger on it, I trigger on the 1KHz test output, triggering once every 125 rising edges (resulting in triggering 8 times per second, which divides into 720Hz evenly). I then take an average of 64 observations to draw the waveform. The 720Hz period is very obvious, as are some higher-order harmonics. The average signal drifts to the left by about 500 microseconds per 35 seconds, implying an average rate of 2.5spd, though I need to actually measure to see whether this is the actual watch drift rate or a drift in the 1KHz test port.