Products > Test Equipment
FeelTech/FeelElec FY8300S Quick Tear Down
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rhb:
That *almost* makes it worth getting one.
grizewald:

--- Quote from: CDaniel on January 16, 2020, 08:11:46 pm ---And after teardown , can you check the jitter for square wave ? One of the issues with FY6600 ... if this is resolved than is not just an expensive toy and could worth the money
Power supply and other deficiences can be corrected , but sloppy firmware not .

--- End quote ---

Square wave at 1.32566Mhz. Solid as a rock!

nctnico:
You need to look at multiple periods! A square wave is difficult for every DDS based waveform generator (and most digital ones are) unless it has a special mode for generating square waves (*). The problem is that a square wave period always needs to be a multiple of sample clocks. If the requested frequency isn't dividable by the sample clock then some periods will be longer and others shorter which shows up as jitter.

The older Siglent SDG1000 series for example had extra circuitry to turn a sine wave into a square wave to mitigate this problem (which wasn't without issues though).
grizewald:
My mistake.

Here's a 9.32566MHz square wave. Triggering on the leading edge with persistence set to 10 seconds.



I'd be getting a thick trailing edge if there was jitter wouldn't i?
grizewald:
It's a different story if you wanted to use the generator's sync output though.

Ch1 is the same square wave, Ch2 is the sync output from the generator and the 'scope's trigger source.

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