PS: Crappiest 'poll' ever.
Who gets to decide what 'better' and 'worse' means?
If the scope will satisfy you, you could later by a second one. It has both trigger out and trigger in, so you can stack them and have 4 channels set to one trigger-point. Or 2x2 Channels with two independent trigger-points if it will be necessary.
Good suggestion, I was told the same when talked with a sales guy . But I have 3 concerns:
1) Waveforms won't be on the same screen, harder to correlate information and do relative measurements
2) I believe triggering should have some noticeable delay at higher frequencies. Can this be a problem?
3) it will occupy more space than a single unit, extra power cord, extra ethernet cable...
Why would you chain them? Can't you just connect the triggering signal to both (with a T connector)?
The user manual says in page 50 that siglent SDS1202X-E have really 5 channels, 2 analog and 3 different trigger channels, ok maybe it isn't really true because one is EXT and the other is EXT/5 which is the same as EXT but with attenuation of 5, and the other channel come from the AC mains, to trigger with the AC line, this is a good way to measure power supplies.
I don't know if I'll use FFT function
I don't see how in the world you can decode SPI with 2 channels.
I don't see how in the world you can decode SPI with 2 channels.
By swapping the probes around a lot and remembering what the other channel looked like.
The problem comes when you want to use a channel for triggering but are interested in the data on the other channel.
the interesting thing about the sig' is in the tear down, it has a 4 channel A/D convertor.
Finally mine arrived.
As somebody asked, here is a short review.
Overall verdict: I have an overwhelming experience. So far I don't have any plans to sell it or return.
0) I'm shocked, it looks like it can capture all 14M points (full memory depth) at full 1GSa. How is this possible??
2) Bugs. There are some. What I found is that horizontal cursors do not account for probe attenuation. Also frequency is displayed wrong when I enable low-pass filter on trigger (shows 1MHz on a 40MHz sine). May this thing somehow counts frequency with the trigger?
3) FFT. I never had a proper a proper spectrum analyzer, but it doesn't look like this scope can replace one.
4) Fan noise. Quite noisy in my quiet room. It's not a mechanical noise, it sound like an air conditioner (or like air flow is blocked, I need to re-watch tear-down to see if this is the case)
I still keep playing with it, discovering, doing stupid stuff (like "measuring" capacitors, playing with cable termination, etc).
4) Fan noise. Quite noisy in my quiet room. It's not a mechanical noise, it sound like an air conditioner (or like air flow is blocked, I need to re-watch tear-down to see if this is the case)
Good to know.
0) I'm shocked, it looks like it can capture all 14M points (full memory depth) at full 1GSa. How is this possible?? I thought there should a "fast" and a "slow" memory for different acquisition speeds. What a nice surprise, I can capture whole 10ms at full speed and zoom-in up to some ns per division.
2) Bugs. There are some. What I found is that horizontal cursors do not account for probe attenuation. Also frequency is displayed wrong when I enable low-pass filter on trigger (shows 1MHz on a 40MHz sine). May this thing somehow counts frequency with the trigger?
4) Fan noise. Quite noisy in my quiet room. It's not a mechanical noise, it sound like an air conditioner (or like air flow is blocked, I need to re-watch tear-down to see if this is the case)
5) Probes. They look okay, I also bought Testec TT-HF-212 just in case (and for comparison), but it needs a 1MHz signal for proper calibration. Now I need to figure if my SDG2042X (I bought it as well) is good-enough for "three-point probe calibration" and what sort of adapters needed. Huh, silly me
The Siglent is noticeable quieter than the Rigol and the fan of the Siglent appears to be softer in its noise-spectrum.
I measured them with a B&K 2233 noise-meter (linear, slow, max.-level):
Siglent 1292X-E - 46,1 dB SPL
Rigol 1104Z - 49,6 dB SPL
And additionally the Siglent SDG1025 - 48,6 dB SPL
But because of its noise spectrum the SDG1025 appears to me to be the loudest of the three and the 1202X-E appears to be far softer than the others.
I think there are some triggering oddities.
Try going into the trigger menus, then just open the [Type] menu option and see if that fixes it. (You don't have to actually change the trigger type, just open that menu.)
The Siglent probes come with an adapter that you can fit on the end then plug that into a female BNC.
I think there are some triggering oddities.
Try going into the trigger menus, then just open the [Type] menu option and see if that fixes it. (You don't have to actually change the trigger type, just open that menu.)
Playing with options does not help anyhow when "HF reject" activated. I think it counts frequency from the screen waveform or something. So when HF filter is activated it shows distorted waveforms and the algorithm fails to determine zero crossing (just my theory).The Siglent probes come with an adapter that you can fit on the end then plug that into a female BNC.Thank you, it did the job. And I don't see any difference between testec and siglent probes. SDG2042X specifies rising time 8.4n, that's approximately what I get with both probes. That's good to know, testec is sort of expensive.
One thing that bothers me is that sometimes I see "glitches", like it fails to trigger properly. Please find the photo attached. Why is this happening? Looks like jitter or something, on lower frequencies it also occurs, but the phase shift is much smaller.
What is the source of the signal you are showing in the picture?
What is the source of the signal you are showing in the picture?
It's SDG2042X connected via included BNC cable with 50Ohm pass-through termination (connected to the scope).
Thank you very much for helping. I pressed default button on the scope several times. It looks like it works better now, but it didn't help me yesterday. BTW, the unit is on for more than 30mins, so it's not a warm-up issue.
And one thing still bothers me.
1) Trigger has an offset around from the bottom the waveform (does not trigger if it comes any close to the bottom of waveform). But it triggers as expected if set to the very top of waveform.
2) Changing vertical resolution affects triggering.
Is either of these normal? I recorded a video where both problems can be seen: it looses triggering when I change vertical resolution or put trigger close to the bottom edge of the waveform. Here it is: https://goo.gl/photos/AC14aGX4sPcB3E599
PS Self-calibration does not help.
PPS I cannot reproduce the problem when attached to the built-in square wave generator, may be because it does not go negative.
You get the strengths of each, with the only downside being that you have to put up with the Rigol's user interface quirks.