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Siglent SDG6000X series 200-500 MHz AWG's

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TurboTom:

--- Quote from: fasset on February 07, 2022, 09:54:56 am ---Hi.
SDG6022X allows different digital modulations on both channels at the same time from internal source?
E.g. FSK 1k bp/s with internal data on CH1,
and FSK 10k bp/s with other internal data on CH2.

Or:
E.g. FSK 1k bp/s with internal data on CH1,
and PSK 1k bp/s with other internal data on CH2.

and other variations.


Thanks you.

--- End quote ---

Seems like any combination of modulations is possible, only I/Q modulation is available as a "single option" (obviously since both channels are required for this). Here's your inquiry of FSK and PSK. For FSK, you select the "shifted" frequency and the modulation rate (internal source) which may be up to 1MHz which appears to be common for all "simple" modulation schemes. Analog modulations like AM, FM, PM, DSB also allow arbitraries as modulation sources, thus it should be possible to even generate an FBAS-modulated UHF TV signal (didn't try). Might be boring to watch, though...  ;)

oz2cpu:
SDG6000 can play back wave files, so far so good
did anyone have a file, for a PAL composite test picture, colorbars, sharpness bars and the whole thing ?
interlaced and all ?
will it be too large/detailed for its wave memory ?

fasset:

--- Quote from: TurboTom on February 10, 2022, 11:43:45 am ---Seems like any combination of modulations is possible, only I/Q modulation is available as a "single option" (obviously since both channels are required for this). Here's your inquiry of FSK and PSK. For FSK, you select the "shifted" frequency and the modulation rate (internal source) which may be up to 1MHz which appears to be common for all "simple" modulation schemes. Analog modulations like AM, FM, PM, DSB also allow arbitraries as modulation sources, thus it should be possible to even generate an FBAS-modulated UHF TV signal (didn't try). Might be boring to watch, though...  ;)

--- End quote ---

Ok, thanks.
I have read the whole thread.
You have mentioned a lot of problems and bugs here and also you have
personal experience with comparison to other AWG units.

Most of them are fixed (f.e. glitches).
Previously you said you have to verify waveform on oscilloscope every time when you changing setup.
It is still actual problem? Would you buy SGD6000x model again? It is reliable and are you using it for a now?

Not many AWG have also IQ option which can be useful in my future projects so Siglent is potentially good option.

TurboTom:
Let's put it like this:

The performance (available frequency range, rise time, I/Q modulation -- though not with an arbitrary external data source), if you consider hacking and thus the price for the SDG6022X, is quite respectable. The previously troublesome incomplete initialization issue after some cold-starts or mode changes and thus the requirement to verify the integrity of the waveform has been addressed by Siglent in one of the recent firmware updates, so that's sorted.

So if you particularly need the high bandwidth or the I/Q functionality, go for it!

U/I of the instrument is mediocre at best, showing its age (heritage of the SDG1000X series), the encoder's performance is less than stellar and the display with the resistive touchscreen has a pitiful contrast. The touch functionality is not really worth talking about, it appears to be a reluctantly implemented afterthought, same as the frequency counter function.

If you're just in the market for "universal" AWG and the high bandwidth and I/Q options aren't requirements, I'ld get a different instrument anytime and skip Siglent products entirely! They have their strong points in o'scopes and RF gear but their "mature" AWG series isn't among them. Don't know about the new SDG7000A, though. But that's playing in a different league, also price-wise.

Would I buy it again? Clearly, NO!

2N3055:

--- Quote from: TurboTom on March 28, 2022, 10:34:00 am ---Let's put it like this:

The performance (available frequency range, rise time, I/Q modulation -- though not with an arbitrary external data source), if you consider hacking and thus the price for the SDG6022X, is quite respectable. The previously troublesome incomplete initialization issue after some cold-starts or mode changes and thus the requirement to verify the integrity of the waveform has been addressed by Siglent in one of the recent firmware updates, so that's sorted.

So if you particularly need the high bandwidth or the I/Q functionality, go for it!

U/I of the instrument is mediocre at best, showing its age (heritage of the SDG1000X series), the encoder's performance is less than stellar and the display with the resistive touchscreen has a pitiful contrast. The touch functionality is not really worth talking about, it appears to be a reluctantly implemented afterthought, same as the frequency counter function.

If you're just in the market for "universal" AWG and the high bandwidth and I/Q options aren't requirements, I'ld get a different instrument anytime and skip Siglent products entirely! They have their strong points in o'scopes and RF gear but their "mature" AWG series isn't among them. Don't know about the new SDG7000A, though. But that's playing in a different league, also price-wise.

Would I buy it again? Clearly, NO!

--- End quote ---

Well,

while I also complained to slow responding encoder, I would disagree with "clearly NO!".

Screen is touch screen, and resistive type. Very good ? No. But I don't use it much. Buttons are quite quick.
So I just disregard touch screen. It is not a primary U/I anyways.
Honestly, any touch screen that is so small won't be good U/I for touch, especially if you don't keep on the desk right next to you. Screen contrast is not best but personally never had problems reading.

And yes bandwidth and I/Q modulation are very important features. Very much so.

So to me it is more that it could have been so much better if it was made today, differently.. But that would be different product then. So a moot point at this time..

None of the stuff you mentioned would be "clearly NO!" to me.

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