Products > Test Equipment
Function generator with simultaneous modulations
MarkL:
--- Quote from: maxwell3e10 on January 19, 2017, 03:49:18 pm ---Regarding gate modulation, I am not sure if its usually an integer number of cycles or simple on-off. I think some function generators have an option for either, but I haven't checked which is more common in general.
What I would prefer is the starting phase of the carrier to be the same at the gate trigger.
--- End quote ---
The two I mentioned, 8116A and FG504, both have an integer number of cycles with a selectable start phase. I checked before I posted. But I can't speak for other models.
Good luck on your search.
Siglent America:
Hi MarkL.
The Siglent SDG1000X and 2000X families do have a calibrated adjustable Start Phase.
Plasmateur:
--- Quote from: tautech on January 18, 2017, 06:39:52 pm ---
--- Quote from: maxwell3e10 on January 18, 2017, 02:59:58 pm ---Thanks, this is interesting. From what I can tell SDG1062X has only one input BNC, so one couldn't put in external modulation and externally trigger the burst. On the other hand SDG1025 has separate modulation and trigger inputs, so perhaps it can do both?
--- End quote ---
Correct.
I only had a 1062X and my aging 1010 on hand that had 2 channels to try this.
The older 1 k series I think are slowly being phased out to be replaced with 1kX as our basic 2 channel AWG.
I did achieve the same result with the SDG1010 but the quality of the waveform was inferior to the 1062X and I didn't want to post it, but despite having less inputs a 1062X was able to do this job.
On the other hand the SDG2042X that seems to be a forum favourite has the additional inputs and the waveform quality would have been much better still. Sold my last one a week ago so couldn't use that.
If you have more than basic needs for an AWG, the SDG2042X is the one to go for. Check out the thread here on the blog, lots of happy owners. :)
--- End quote ---
I could not agree more. The SDG2042X is the best bang for your buck on the market. I am very happy with my purchase so far.....
Now if they could just get both outputs to trigger from the same software trigger....well, I'd be super super happy
maxwell3e10:
So I am looking again into the issue of simultaneous modulation, for a different application. While many signal generators (analog synthesized sine wave) have simultaneous modulation capabilities (e.g. AM+FM), most arbitrary waveform or function generators (direct D/A output) don't have it. I couldn't find even one example of an AWG that clearly advertises simultaneous modulation. Of course one could create an arbitrary waveform that will have modulations, but it is cumbersome. I don't think there is a technical obstacle to have simultaneous modulation, so maybe some such generators do exist?
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