Function Generator questions, thinking to buy one (siglent/Rigol) - Page 1
Forum section: electronics / testgear

author: danny_isr
author_rank: Regular Contributor
timestamp: July 03, 2015, 04:15:49 am
content: So i'm on the market for a new Function Generator. i'm thinking to get a Siglent 1025 or the Rigol dg1022.1) Can i create a digital pattern (frame) with those DDS function generators ? Like load a file with hex values and see a digital pattern out ?2) Similiar to question 1, what about PWM output, and if possible can i add random jitter on that ?3) I already have Rigol equipment such as the 1054z and the DLP832. Does getting a Rigol FG gets me any benefit over Siglent FG ? (working with the 1054z that is).4) I know there already posts here that compare between the Siglent to the Rigol. and seems the Siglent offers more features. But i couldn't find anywhereif the output signal "quality" looks better, similar or same on both those units.thanks

author: AutomationGuy
author_rank: Contributor
timestamp: July 03, 2015, 11:34:31 am
content: I am looking for a function generator as well.This one is my favorite at the moment:https://www.reichelt.de/Funktionsgenerator-Frequenzzaehler/PEAKTECH-4165/3/index.html?ACTION=3&GROUPID=5881&ARTICLE=153991&OFFSET=1000&WKID=0&SID=12VPxAsn8AAAIAAFmAxCw032095ca7830330f737b367afbe72e40&LANGUAGE=ENPeakTech is not known here but the specs matches my requirements better. Up to 60Mhz sine.The Siglent has better price.

author: danny_isr
author_rank: Regular Contributor
timestamp: July 03, 2015, 03:58:57 pm
content: not sure it has better price, if you take into account that the one you suggesting is 60Mhz.

author: jadew
author_rank: Frequent Contributor
timestamp: July 03, 2015, 04:21:10 pm
content: 20 MHz reference clock input? That's new.

author: commie
author_rank: Frequent Contributor
timestamp: July 03, 2015, 05:51:26 pm
content: I was in your position some time back, I bought the Rigol DG2022 for starters then about 2 years later I purchased the Rigol DG4102 along with a full set of attenuate's both of which are good to use and make up part of my arsenal of test gear which grows ever larger over time.CheersCommie

author: Muxr
author_rank: Super Contributor
timestamp: July 03, 2015, 06:05:46 pm
content: I've been thinking of getting one for awhile. I just had one of those cheap eBay arduino based DDS boards, which did alright for my needs given the cost ($14 or something I paid for it.).But every time I decided to get a proper func gen I couldn't decide on which one to get and I kept using the little arduino one.I've been watching EBay for good used deals on one for months but I didn't find anything I liked. I don't use the sig gen often and it doesn't make sense to spend a lot of money on one, it also didnt make sense to get a large unit for something I only use occasionally. Bench space is at the premium in my "lab".After going back and forth between the Rigol and Siglent I decided to go with Siglent (I have the Rigol DS2000 scope). It's a newer unit and it has 14 bit DACs on both channels, Rigol's 2nd channel is 12 bit. I also read that the software support on the Rigol unit is problematic. I liked the Rigol form factor better, which is why it was a tough decision.Anyways my Siglent 1025 is supposed to arrive today.

author: danny_isr
author_rank: Regular Contributor
timestamp: July 03, 2015, 10:17:22 pm
content: Quote from: Muxr on July 03, 2015, 06:05:46 pmplease let me know what you think about it....

author: Muxr
author_rank: Super Contributor
timestamp: July 04, 2015, 01:21:43 am
content: Yup got it today. It's exactly what I expected. I quite like the UI actually. Pretty intuitive. Solidly built little box. Did everything I threw at it and the waveforms looked much cleaner than the little Arduino DDS I was using. It's the same form factor as my Fluke 8842A just not as deep. But it fits perfectly on top of it. The unit has a fan but it's barely audible. I am very happy with the purchase, I think I made the right decision.Haven't had time to mess with arbitrary forms, I also got some boards from OSHpark today so I ended up working on that for the past 5-6 hours. Just finished populating one of them for a project I am working on. TQFP 144 is a major PITA without a stencil ugh..

author: tautech
author_rank: Super Contributor
timestamp: July 04, 2015, 01:42:53 am
content: Congrats, don't think I've seen any bad threads about them. I trust it will serve you well.Don't make the mistakeLightagesdid.https://www.eevblog.com/forum/repair/siglent-sdg1025-output-stage-ch1-not-right/Keep an eye on these threads for any FW that comes up from time to time:https://www.eevblog.com/forum/testgear/the-sdg1000-and-sdg800-thread/https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg248820/#msg248820

author: Muxr
author_rank: Super Contributor
timestamp: July 04, 2015, 02:17:16 am
content: Thanks for the heads up tautech. Good info!

author: Lightages
author_rank: Unknown
timestamp: July 04, 2015, 02:18:20 am
content: Yeah, feeding high voltage back into the output isn't very nice.

author: Muxr
author_rank: Super Contributor
timestamp: July 04, 2015, 02:20:13 am
content: Quote from: Lightages on July 04, 2015, 02:18:20 amYeah sorry for your trouble. Need to watch how I apply signals with it.