Products > Test Equipment
Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels
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tautech:

--- Quote from: 13hm13 on February 19, 2023, 09:37:11 am ---
--- Quote from: tautech on February 19, 2023, 08:56:45 am ---Please please please learn how to take USB screenshots so we can see your settings otherwise we cannot offer proper advice.

--- End quote ---
What a weird comment! How else would one know where my probe was plugged into. Or that I really own the 'scope. Screen shots are easy to steal from Google images.
Come on!
 You  really are completely clueless as to what the cold boot issue is, right?

--- End quote ---
Don't call me clueless sonny as I've sold more of these scopes than you might imagine !

Again, we can't see your settings in the piss poor pics you took due to the lighting glare.
Please take a screenshot to USB with the blue print button then we can see what's going on.
13hm13:

--- Quote from: tautech on February 19, 2023, 09:47:08 am ---
--- Quote from: 13hm13 on February 19, 2023, 09:37:11 am ---
--- Quote from: tautech on February 19, 2023, 08:56:45 am ---Please please please learn how to take USB screenshots so we can see your settings otherwise we cannot offer proper advice.

--- End quote ---
What a weird comment! How else would one know where my probe was plugged into. Or that I really own the 'scope. Screen shots are easy to steal from Google images.
Come on!
 You  really are completely clueless as to what the cold boot issue is, right?

--- End quote ---
Don't call me clueless sonny as I've sold more of these scopes than you might imagine !

Again, we can't see your settings in the piss poor pics you took due to the lighting glare.
Please take a screenshot to USB with the blue print button then we can see what's going on.

--- End quote ---
What a weird comment! How else would one know where my probe was plugged into. Or that I really own the 'scope. Screen shots are easy to steal from Google images.
Come on!
 You  really are completely clueless as to what the cold boot issue is, right?
2N3055:

--- Quote from: 13hm13 on February 19, 2023, 02:28:26 pm ---
--- Quote from: tautech on February 19, 2023, 09:47:08 am ---
--- Quote from: 13hm13 on February 19, 2023, 09:37:11 am ---
--- Quote from: tautech on February 19, 2023, 08:56:45 am ---Please please please learn how to take USB screenshots so we can see your settings otherwise we cannot offer proper advice.

--- End quote ---
What a weird comment! How else would one know where my probe was plugged into. Or that I really own the 'scope. Screen shots are easy to steal from Google images.
Come on!
 You  really are completely clueless as to what the cold boot issue is, right?

--- End quote ---
Don't call me clueless sonny as I've sold more of these scopes than you might imagine !

Again, we can't see your settings in the piss poor pics you took due to the lighting glare.
Please take a screenshot to USB with the blue print button then we can see what's going on.

--- End quote ---
What a weird comment! How else would one know where my probe was plugged into. Or that I really own the 'scope. Screen shots are easy to steal from Google images.
Come on!
 You  really are completely clueless as to what the cold boot issue is, right?

--- End quote ---

 :-// |O

Do you need help or you just enjoy this kind of conversation....?

You need to work with people that are trying to help you.. Sort of help them to help you..

That being said, please apply newest firmware for your scope. Manufacturers make fixes and upgrades and sometimes that is all that needs to be done to fix something.

Second, how do you know it isn't the probes that is problematic ? 1X/10X probes can have noisy switches and also cable and BNC can have bad contact.

Does the overshoot that is visible gradually (slowly) sets to normal squarewave or it is distorted for few minutes and then suddenly switches to proper squarewave ?

Is problem visible only on CH2 ?


rf-loop:
It looks that @13hm13 have latest FW (it is SDS1202X-E).


I recommend (because @13hm13 talk about "cold start" problem)...  right now, the first thing to do is to rule out all other factors that  may affect the matter except the oscilloscope itself. So it need investigate without probes. (And next "desert method" because I do not know what tools @13hm13 have available)

Perhaps most simple thing is: Just single wire from Probe compensation output (1kHz "square") to both input BNC center tab (do it so that contact is reliable but do not damage BNC center). (no need separate GND wire, it is connected internally and is ok for this purpose.)

Then do many all kinds of cold starts etc and watch results (you can example keep it in the fridge, for example, and you'll get a bit more of a thermal gradient there when it starts up and warms up.)
You can also use even infinite display persistence setting so that if any short-term or slow changes these also stay visible on screen.)

And then, please display results to us (oscilloscope screen image (png)) if there any weird things visible.

(your previous image looks like just as typical very badly uncompensated 10:1 probe or somehow failed probe)



If in this test can not find any problem.

Then next step is look your probes...  these have really LOT of higher failure rate that these scopes. (I have never seen any failed SDS1202X-E and I have some experience about (## pcs) these started from the time Siglent have started manufactured this model. But I have seen several failed PP215 probes. Probes are just consumables like lamps and car brake pads. They are also cheap. They can in no way be compared to some of the professional Tektronix measuring heads costing hundreds of euros. )

But now we first need to find out if the problem is either inside the oscilloscope or for some reason or another somewhere outside it.

BillyO:

--- Quote from: 13hm13 on February 19, 2023, 02:28:26 pm --- You  really are completely clueless as to what the cold boot issue is, right?

--- End quote ---
WE all are, to be honest.  The main reason is you are not following people's suggestions and giving them the information they need to help.

BTW, Tautech is a Siglent dealer.  He has considerable first hand experience with these scopes and a direct line to Siglent to get any hard questions answered.  Being flippant with him might not be your best approach.

Every single person on this site knows full well what the compensation signal is and what it is used for.  One thing it is not usually used for is probes set on x1.  It is there to adjust the compensation capacitor in the probes for proper response to a square wave at 10x.

It would help tremendously if you did a proper screen shot (insert USB stick, press blue "Print" button, and attach the file to this thread so that we can see how the scope is configured.

As 2N3055 suggests, this could be caused by a faulty probe.  Try fiddling with the 1X/10X switch when you see the problem.  Or tapping gently on the probe itself.

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