seems that if L1 and L2 are a bit wrong value-wise, you won't just get a bit of FMing, it'll be miles off, if it oscillates at all. ... When you're talking single digit nH, layout does of course make a difference
especially regarding parallel as opposed to orthoganol or linear placement and associated coupling
Well, I didn't mind the jitter on my DS2000 but I'm glad that is gone. What is getting me is that they broke the USB reinsertion. So sometimes I can't get a screenshot without rebooting unless I get all my signals first.
I thought it wouldn't be a big deal but the way I usually work is I take the thumb drive after a set to captures to transfer then I insert it back and no go
I'll eventually adapt and remember to make sure I see the usb devices inserted if I plan to capture anything, but it's getting a bit annoying.
Howard,
Can we see what the CP pin looks like with the Rigol loop filter values / old firmware combo?
Although unlocked, your eval doesn't have the serious FM happening that we've seen on some of the old firmware and beta units. With the first sideband at -36dB, I'm getting a deviation of 3.1kHz, which translates to a displayed jitter of 20ps pk-pk @5us delay.
The first DS1054Z I looked at had a 50mVpp 100kHz sawtooth happening on the CP pin with the old firmware. You obviously have the 100kHz modulation; I'm just wondering if examining the CP behavior will provide any clues. (But your deviation may be too small to see on CP or Vtune).
You must be kidding. 30dB spuri below the fundamental is an utter garbage in integrated PLL world.
Also, I need to make a correction, the PLL is showing locked on the old values too, it just wasn't being output on the pin due to the registry settings. Doh! Anyway, I guess that's as much to do with the way that the lock is configured and interpreted as much as anything else.
Also, I need to make a correction, the PLL is showing locked on the old values too, it just wasn't being output on the pin due to the registry settings. Doh! Anyway, I guess that's as much to do with the way that the lock is configured and interpreted as much as anything else.
Are you saying this (and the others that had this modulation) from your post #1092 was actually locked??
Old firmware on Eval board with DS1000Z loop filter parts
Do any of you have a link to the latest firmware for my DS1054Z? I thought there was a link somewhere in this thread, but I have searched back about 15 pages and not found it.
I just received my scope today, and it is showing firmware version 00.04.02.sp3 board version 0.1.1. When they did a video about the gender fixed, he was showing firmware version 00.04.02.SP4, so it does not appear my scope has the very latest version. I would like to update it as soon as possible.
Thank you
Ed
Do any of you have a link to the latest firmware for my DS1054Z? I thought there was a link somewhere in this thread, but I have searched back about 15 pages and not found it.
Well this thread kinda died.
Well this thread kinda died.Yes this thread is dead, as the bug is fixed for DS2000/A with latest Firmware release.
As I was one of the owners that report this bug to Rigol 21 months ago, I am satisfied it is corrected!
I do Not know what hardware change you are looking for?
There may be other issues you have?
My understanding from reading all the threads is that the root of the issue was caused by the configuration / components used for the PLL loop. It was also suggested that Rigol could quietly make a hardware change to this area, on the next revision. I'd hate to make a purchase a week before a better hardware solution was offered. Or, they could do nothing at all, and it doesn't really matter.
My understanding from reading all the threads is that the root of the issue was caused by the configuration / components used for the PLL loop. It was also suggested that Rigol could quietly make a hardware change to this area, on the next revision. I'd hate to make a purchase a week before a better hardware solution was offered. Or, they could do nothing at all, and it doesn't really matter.There's no point worrying about what Rigol may or may not do in future revisions when the hardware available now is perfectly functional.
Test gear is much like consumer electronics: there always seems to be a newer version, a price drop or a special deal waiting around the corner until you commit to the current model.
On the other hand, there are suggestions that Rigol is planning a price increase for the DS1054Z and conceivably other scope models, and who is to say there won't be fresh bugs in any hypothetical new hardware revision?
Just buy the scope.
tautech. Thank you for your advice. I think il stick with old faithful for the time being and look around for maybe a better one. Thank you.