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Question: Cheap pure sine wave genertor 1khz?
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bozidarms:
Victor`s  1kHz is Nr.1 - can hardly be better.

THD: -135dB  --  0.0000178%

6dBV = 2Volt(eff) = 5,6Volt(s-s) = 8,2dBu
Grandchuck:
Thanks Boz!  How did you achieve that low noise floor?
bozidarms:
Hi Grandchuck

--- Quote ---Thanks Boz!  How did you achieve that low noise floor?
--- End quote ---

That is one RTX6001 Audio Analyzer and 1 Million-point FFT length
Martin72:
Only a few more components and then mine is ready.
I still have to equip the notch filter board.
Martin72:
Oscillator board now complete assembled(except connections), for the notch filter board I thought I already have all the parts, but today I recognized that the OPA209 chip got the wrong package... :P
Nevertheless, the other parts will be soldering tomorrow.
I´m curious about the oscillator, will test/adjust it soon.
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