DAC frequency is doubled.

safocl
Posts: 4
Joined: Thu Dec 12, 2024 1:53 am

DAC frequency is doubled.

Postby safocl » Fri Jan 09, 2026 9:11 am

I'm using DAC Cosine Wave Output (Cosine Mode). But!!! when using cosine wave frequency of 150Hz -- ADC Continuous Mode Driver with sampling rate of 30kHz detects Cosine Wave period with ~100 samples (300Hz); when using cosine wave frequency of 10kHz -- ADC Continuous Mode Driver with sampling rate of 2MHz detects Cosine Wave period with ~100 samples (20kHz)...
It is doubled frequency differ whis selected to DAC Cosine Wave Output.
The frequency difference is double the one selected in the DAC Cosine Wave Output.
Attachments
150hz.png
150Hz cosine wave and 30kHz ADC
150hz.png (33.77 KiB) Viewed 486 times
10khz.png
10kHz cosine wave and 2MHz ADC
10khz.png (35.65 KiB) Viewed 486 times

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