[Others] "Output Frequency" on a DC switching power supply means the switching frequency of the power supply?

Hi all. The output frequency of this power supply is 20-100kHz. Since its DC out, which would be 0Hz, am I correct to assume that the 20-100kHz would be caused by the switching. So I could in theory use a low pass LC filter with a cutoff of less than 20 Hz to remove noise? Thanks!
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1 Nikola Krneta 11
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6 Allianbo Guu 1
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8 Carl 1
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10 Yashodha Salgado 1