slightly off topic, but not too much: I have a younger brother (siglent 1202x-e); it often happens that when I print to save the screen, the oscilloscope freezes (no key responds), to turn it off I have to unplug it; does anyone in here have this unpleasant problem?
thank you
char
slightly off topic, but not too much: I have a younger brother (siglent 1202x-e); it often happens that when I print to save the screen, the oscilloscope freezes (no key responds), to turn it off I have to unplug it; does anyone in here have this unpleasant problem?
thank you
char
I do too, on my 1204X-E. There's been some discussion on that in this thread: https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg3067512/#msg3067512
Haven't heard anything from Siglent on the matter.
In my experience memory sticks can be a hit or miss. I was going to upgrade the firmware on my spectrum analyzer now. The first unti I grabbed didn't work on the Siglent, but the second did work flawlessly.
thanks blurpy for the testimony, so it's not just my 1202 problem ...
That Siglent pretends nothing is a good thing ...
I add: see my message below, did you see that a user solved it by returning to firmware .23?
In my experience memory sticks can be a hit or miss. I was going to upgrade the firmware on my spectrum analyzer now. The first unti I grabbed didn't work on the Siglent, but the second did work flawlessly.
Attached is an old screenshot showing the phase error for all three Bode Plot channels with Ch.1 being the reference.
We can see that the actual skew is about 0.926 ns (40° phase shift at 120 MHz).
A skew less than 1 ns at a sample clock of 1 GHz for each ADC (500 MHz for each channel) isn't that bad after all - the only question remains why there is no deskew like during normal operation?
Of course I've brought this to Siglent's attention back then and the fact that it isn't fixed yet is either because of the very low priority of the Bode Plot or there are actually some technical reasons that we aren't aware of.
The 2nd screenshot shows the same scenario when viewed in traditional Y-t mode. Here we can see that the skew is well compensated (the remaining skew is due to the setup, not the scope).
It looks like Deskew *IS* used in BodePlot II..... but I have discovered that there are problems with Deskew that made it just appear by chance like it wasn't being used .
Deskew seems to work fine at 1 ns/div timebase, but is very broken at other timebases -- and those other timebases happen to be what Bode plots use while being generated.
For example:
Using the same ADC, e.g. Chans 1+2.
If I have two signals that are about 780 ps skewed, I can go to 1 ns/div timebase and adjust Deskew to get them to match perfectly.
However, when I then change to, say, 50 ns/div the phase measurement suddenly jumps back to what seems to be the orginal phase difference! (The Deskew value is still set) Now, further adjusting the Deskew up or down doesn't affect the skew (visually or auto-measured) at all until 1 ns thresholds are reached -- at which point the skew measurement jumps another full ns to a new value and stays there until the next full ns higher/lower Deskew increment is reached.
If I change the Deskew enough to hit a threshold that it feels like changing the phase measurement at, *then* it will affect the Bode plot traces.
I see this weird Deskew problem below 50 ns/div as well. 20 and 10 ns/div are easy to see, while at 5 ns/div it is more subtle, but noticeable when changing from 0 to +10ps Deskew.
Hopefully this description makes sense.
Older times 1G, then 2G and later 4 and 8G. Last years always 4 and 8G USB2.0 sticks after I find that these need keep and care because more and more difficult to find.
Only just in true genuine FAT32 format with 4k cluster size.
I noticed. Not sure if the same apply to older firmware for 1204X-E, but possibly.
it's usually a good idea to stick to well known brands and to be careful where you purchase them.
There are lots of counterfeits of some of the big brands.
In the pro audio world, where SD cards are widely used it can be a real nightmare.
The jitter produced by those cheap SD cards is unbelievable!
WAIT: you are not talking about sample jitter, right?
WAIT: you are not talking about sample jitter, right?
I'm afraid I was.
I failed to see how any SD card could be too awful for audio use so I assumed audiophoolery.
Has already someone botherd to exchange the Intensity/Adjust encoder with a detented encoder?
I've been wondering the same thing.
Has already someone botherd to exchange the Intensity/Adjust encoder with a detented encoder?
I've been wondering the same thing.
I have done it right after purchasing bc this non-detent encoder was driving me nuts - pretty weird design decision given that they have detented ones for vertical/horizontal anyway.
In fact, I've even taken the photos to dump here, but I'm a lazy arse so that never happened.
I can't remember the P/N of the original non-detented one, but it turned out to be some sort of Chinese unobtanium. After searching a bit through what ALPS/Bourns/Omron offer, the closest I was able to find dimension-wise was Bourns PEC12R-4220F-S0024.
To my taste it has a bit too much detent force, otherwise it has been working absolutely fine for the last half year.
(Attachment Link) (Attachment Link)
UPD:
I still have the original part, it has no P/N, but LJV embossed on it.
I may do this upgrade, as I would really enjoy a detented encoder on the intensity/adjust encoder. Is there anything special that I should know about this upgrade before doing it?
Hi, planning to buy my first oscilloscope, is the 1104X-E still recommended?
I'm studying to become an electrical engineer and will use it for audio projects with oscillators and filters as well as more digital automation projects with microcontrollers. As I learn more I want to be able to progress to more advanced projects.
who else offers 500uV/div sensitivity