Rotate Oscilloquartz 8600 BVA oscillator
This is a 1000 s run where once a minute I rotated the BVA 90 degrees to each of its 6 axis.
You can see it's quite different depending on which side faces down.
I made an automatic stepper motor vertical turntable gizmo
and this allows me to smoothly run through full 360 degree turn(s) hands-free.
At slow speed it's one turn every 400 seconds.
There is some level of mechanical chatter in the platform at this speed which shows up as short-term noise in the BVA.
But the overall sinusoidal pattern over two turns is quite nice.
This is at a higher speed where each rotation is 100 seconds.
We see 5 turns clockwise followed by 5 turns counterclockwise.
I made two short videos of the stepper in action.
This image is the TimePod / TimeLab trace made during the video.
A BVA has greater sensitivity in the vertical rotating configuration than in the horizontal rolling mode.
The videos are 20 MB each.