New Rigol DS1054Z failed after first power cycle - Page 1
Forum section: electronics / testgear

author: Andy_123
author_rank: Newbie
timestamp: December 29, 2014, 11:04:41 pm
content: New Rigol DS1054Z failed after first power cycle.Came today in the mail, first power up was OK but after I cycled power it's showing signals in excess of 1kV with nothing connected to any channels, with probels or without.See picture.Tried reset to "default" (Storage-> Default)Self Cal. freezes with "Disconnect signals from all channels" message.Any ideas?Model:DS1054ZBoard Ver:0.1.1Firmware Ver:0.2.3.7BOOT Ver:0.0.1.2CPLD Ver:1.1SoftWare Ver:00.04.02.SP3

author: wraper
author_rank: Unknown
timestamp: December 29, 2014, 11:40:23 pm
content: Try to clear FRAM:Quote

author: Andy_123
author_rank: Newbie
timestamp: December 30, 2014, 12:55:26 am
content: No changeIt feels like ADC failed on all channels, not sure if they share the same IC...

author: whipman
author_rank: Contributor
timestamp: December 30, 2014, 01:48:01 am
content: Bummer! After all that waiting. Mine came today too. Haven't had a chance to play with it yet. Hope you get it straightened out!

author: Andy_123
author_rank: Newbie
timestamp: December 30, 2014, 02:39:38 am
content: I heard they shipped almost 200 DS1054z two weeks ago from tequipment.Most of them probably will be powered up soon, I hope other scopes are OK.

author: rf-loop
author_rank: Super Contributor
timestamp: December 30, 2014, 06:51:16 am
content: Quote from: Andy_123 on December 30, 2014, 12:55:26 amIt haveone chipADC(1 channel mode 1GSa/s, dual channel mode 2x 500MSa/s, quad channel mode 4x250Msa/s).Looks like Hittite HMCAD1511

author: Bud
author_rank: Super Contributor
timestamp: December 30, 2014, 08:15:47 am
content: DS1054Z is a defective product. Check EEVBlog #683 videohttps://www.eevblog.com/forum/blog/eevblog-683-rigol-ds1000z-ds2000-oscilloscope-jitter-problemsor follow this link to jump straight to the root cause findinghttps://www.eevblog.com/forum/blog/eevblog-683-rigol-ds1000z-ds2000-oscilloscope-jitter-problems/msg552848/#msg552848In short, the ADC in this model is clocked chaotically. This may or may not be causing the problem that you are experiencing, but since the heart of the scope, the ADC master clock, is a piece of garbage, anything can happen. We do not know what else beside ADC sampling that "clock" may be driving in the scope. GIGO.

author: pickle9000
author_rank: Super Contributor
timestamp: December 30, 2014, 08:48:42 am
content: Quote from: Andy_123 on December 30, 2014, 02:39:38 amMine is fine, except for the jitter of course. Yes, I was aware of the issues before I ordered.

author: Andy_123
author_rank: Newbie
timestamp: December 30, 2014, 11:34:31 am
content: I was fully aware of the jitter problem before I ordered,But this problem is much worse - I can't do any measurements.All 4 channel traces look very stable and repeatable, there channel 1 has highest readings clipped at the top, and ch 2 and 3 I can actually fit on the screen.In any case, I got OK from Rigol support to return it and already submitted RMA with tequpement.

author: Bud
author_rank: Super Contributor
timestamp: December 30, 2014, 06:23:55 pm
content: I admire you guys decided to gamble. Clearly, Rigol did not bother changing anything in this batch. Or if they did, they made it worse as Andy_123's case may suggest.

author: DanielS
author_rank: Frequent Contributor
timestamp: December 30, 2014, 09:48:06 pm
content: Quote from: Bud on December 30, 2014, 08:15:47 amThe jitter issue is not specific to the DS1054Z - it affects the whole 1000Z range and the 2000A as well. Exactly how much however depends on luck of the draw.For some reason, it just happened that nobody had bothered or managed to raise a stink about it until recently.

author: David_AVD
author_rank: Super Contributor
timestamp: December 31, 2014, 12:57:27 am
content: I'm happy with mine.There's always going to be some issues with any mass produced product. Sounds like warranty claim time to me.

author: Andy_123
author_rank: Newbie
timestamp: December 31, 2014, 01:06:28 am
content: I spoke with two Rigol application engineers and both confirmed that scope needs to go back.I emailed more screenshots to one of them with individual channels so they can have a record.I also pointed to the board revision reporting issue that was discussed recently in the jitter thread:Revision switched few times from 0.2.3 to 0.1.1 it went back once to 0.2.3 and returned back to 0.1.1 again. It may did it more that few times, but I did not check it on every power up.In any case, RMA is already processed and the scope is already on its way back to Tequipment.I hope replacement will be fine...

author: aargee
author_rank: Frequent Contributor
timestamp: December 31, 2014, 01:26:09 am
content: I think it is a great scope for the price. Really if you want a perfect scope (whatever that definition means), go buy an Agilent, etc. I'm reasonably happy to accept the 1054 for what it is and happier to see that Rigol *seems* to be taking some interest in rectifying any issues.The jitter problem for the 1054 seems to be way overplayed by some people for what it is, and I dare say I (and others here) probably wouldn't have run into it without Dave's video making me aware.Now as far as the problem existing on the more expensive lines of Rigol scopes, there may be a valid point there as the bang per buck starts to come down...