Question about Timegrapher app results

[deathkei]

Hello

I measured my Omega Caliber 1120 through an timegrapher app. (Dial Up, full wind)

I know the app is not very accurate.

I checked about +100s/d difference and sharply tilted graph .

The odd thing is that the bottom part of the graph is not printed every 100+- seconds.(red-colored circle)

Is this a feature of the timegrapher, or does it indicate abnormal state of movement component?

 

Thank you for the comments.

[jdm]

In  most cases an embedded microphone doesn't give a signal strong enough. So an amplified one has to be used.

[deathkei]

15 minutes ago, jdm said:

In  most cases an embedded microphone doesn't give a signal strong enough. So an amplified one has to be used.

I hope so. But it's strange that it wasn't printed for 5 seconds on a regular basis.

I'll consider buying a timegrapher