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Junctek JDS6600 bad waveform

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MariuszD:
Hi,
I have bought this cheap Chinese generator recently and it has bad distortions below 100Hz.
Settings: sine wave, amplitude 5V, offset 0V.
At 1Hz waveform looks like randomly flipped half sine waves. At 1kHz it is correct.

My question for anyone who has JDS6600. Is your generator usable at 1Hz?

 

Aldo22:
Are you sure it's not the scope settings? (5 s/div, ROLL mode)
Is it the same with e.g. 200ms/div?

MariuszD:
Scope is ok, and I know how to use it. I found this error looking at irregular LED blinks.
I used 5s/div to show random nature of this weird behaviour. With 200ms/div it looks like perfect rectified sine wave or normal sine wave.


Atlan:
Jdm doesn't have software for repair?  Feeltech, you have software and there is an item for correcting the signal flow.

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