Siglent SDG7102A Arbitrary Function/Waveform Generator - Page 1
Forum section: electronics / testgear

author: graybeard
author_rank: Frequent Contributor
timestamp: May 16, 2022, 09:45:05 pm
content: I demonstrate some of the operation modes and and show issues I found in my evaluation of this Siglent SDG7102A 1Ghz Arbitrary waveform Generator. Parts 1 & 2 will be the unit in operation and part 3 will be a look inside.This beta unit was sent to me for 3 weeks for evaluation by Siglent Technologies North America. They authorized me to open the unit and show the inside which I do in part three.The SDG7102A beta unit does many things well, but it has issues. I know Siglent will see this and make improvements. That is part of the reason they sent me the unit to evaluate.

author: tautech
author_rank: Super Contributor
timestamp: May 16, 2022, 09:49:17 pm
content: Thanks Chris and we have a thread for these here:https://www.eevblog.com/forum/testgear/siglent-sdg7000a-350-500-mhz-and-1-ghz-awgs-coming/You might like to 'Report" yourself and ask the Mods to consider merging this post to the existing thread.

author: graybeard
author_rank: Frequent Contributor
timestamp: May 29, 2022, 08:10:45 pm
content: I just posted part 2 of 3 of my review of the Siglent SDG7102A Arbitrary Function/Waveform GeneratorIn this part of the review I go over the the IQ mode; direct output and RF modulation, the spectra of the pseudo random noise, and pseudo random binary sequence (PRBS) mode and eye diagrams.Siglent has seen part 1 and will see parts 2 & 3 and will make improvements based on my findings. That is part of the reason they sent me the unit to evaluate. They have promised to send me an updated unit once they address the issues I show in this set of reviews.Chris

author: Hexley
author_rank: Regular Contributor
timestamp: May 29, 2022, 09:54:49 pm
content: Hi Chris -Thanks for posting these videos.In part 2, you mentioned a case where the SDG7102A changed a parameter setting when you were adjusting a different setting -- modulation rate changed when you changed modulation type, IIRC. This was around 2:40 of the video.That made me wonder if the firmware team fixed a similar case of unwanted parameter changes that happens when going in and out of sweep mode in the earlier AWGs. See the write up athttps://www.eevblog.com/forum/testgear/siglent-sdg1000x-waveform-generators/msg3682000/#msg3682000for details.If you get a chance to run a similar test, it would be interesting to see in part 3.Thanks,Hexley

author: graybeard
author_rank: Frequent Contributor
timestamp: May 29, 2022, 10:05:10 pm
content: Quote from: Hexley on May 29, 2022, 09:54:49 pmI shipped this back to them a few weeks ago, but I keep that in mind when they send me the updated unit for review.

author: hpw
author_rank: Frequent Contributor
timestamp: May 31, 2022, 02:43:12 pm
content: To test on SG7K as issue on SDG2K & SDG6KSetup:• Square wave 10Mhz• FM modulation 500Hz• Low FM deviation value 1Hz or lower, may also on 2HzIssue:• Modulation fades out after a while, use SSA3K to validate

author: graybeard
author_rank: Frequent Contributor
timestamp: July 05, 2022, 04:36:07 pm
content: I just posted the final part of my review that includes a look inside, but not a full tear down.Since I did the video I now think the large chip on the main board cooling air channel to it is the main FPGA, not a CPU. The CPU / microcontroller may be the chip on the daughter board.I hope you enjoy the video.Chris