Recent Posts

1

Test Equipment / Re: SDS800X HD - Issue disscusions - is it me, or the scope?

« Last post by eTobey on Today at 10:33:16 am »

I tried edge trigger to test, and went back to qualified trigger. Now the problem dissappeared, and i have not saved a setup file  .

Tought it was a lack of knowledge, but seemingly it wasnt...

2

Metrology / Re: WinGPIB - Windows GPIB App (multi-purpose)

« Last post by IanJ on Today at 10:31:06 am »

New version in Post #1 available for download.
WinGPIB_V3_165_full.zip - Fresh install
WinGPIB_V3_165_updated_exe.zip - Updated exe to replace existing
[Virus scanned using BitDefender AntiVirus]

Fix bug in PlayBack Chart, the X-Axis scales were displaying as integers rather than floating point numbers.
Have also lowered the minimum length CSV file to 40 lines.

Ian.

3

Programming / Re: Show definitions + autocomplete function parameters for C (text editor over ssh)

« Last post by PlainName on Today at 10:29:05 am »

but how do people were looking-up for the function's arguments before the LSP tools?  If they've only used ctags

I've never used ctags (knowingly) - just a pain to keep up to date. My introduction to this kind of thing was Brief and every serious editor or IDE I've used since then has had to do pretty much the same thing in their own way. Maybe they've used ctags under the bonnet, but I'm pretty sure not. Current editor/IDE is Slickedit, which is definitely not free but (obviously) well worth the cost to me

Anyway, the reason for mentioning that is because although SE has the parameter info you're after (but does it rather better, I think), I rarely use it. Instead, there is a 'preview' window which shows the context of whatever the cursor is hovering over. If it's a variable it will show the declaration; a define, it will show the definition, a function it will show the prototype, etc. The great thing about it is you can then double click whatever is there and there it is in an edit window (either the one you're working on, a new one or, as in my case, the second edit window). You just get used to it being there and showing the detail of what you're working on.

Difficult to describe but I attach a quick screeny so you can see how I have it. It's configurable but essentially it's just the few lines before and after whatever is of interest. You can scroll the window up and down if you need to but can't edit or do any of that stuff - it's a preview!

Maybe that's the kind of thing to look for instead of the in-place popups. Anyway, you did ask how others deal with this

4

Test Equipment / Re: Looking for a replacement general purpose oscilloscope for home use

« Last post by tautech on Today at 10:25:52 am »

AFAIK a 1 GHz and a 2.5 GHz active probe is all they offer so far (and with very little info/details).

You overlooked Siglent's recent inhouse design of 5 GHz differential probes.
https://siglentna.com/products/accessories/probes/active-probes/

They are not listed as accessories for any of the lower BW models other than for the current 3&4 GHz SDS7000A range.....later this year to be expanded to include 6&8 GHz models.

Well, I related to what I could find on Siglent's website. But anyway, good news! Thanks.

Dunno which you looked at but just checked the US, EU, HQ and even the Japanese websites and SAP5000D is listed on all of them as an option for SDS7000A models.

Maybe that Antarctic website you're using is a little outdated ?

5

Beginners / Re: audio amp study

« Last post by magic on Today at 10:25:03 am »

Center voltage is the primary effect and bias is secondary.

For reasonable operation the output has to be near 15V (on a 30V supply). This means 3mA through R7+R8, and you could tweak it from 2mA to 4mA by shifting the output between 10V and 20V, but why? If you want to play with bias, change the value of R13 or R8.

This output stage is not particularly great anyway. Common wisdom is, if you really must use this quasi-complementary configuration, at least add a Baxandall diode and make the emitter resistors more symmetric.

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Test Equipment / Re: SDS800X HD Wanted Features

« Last post by electronics hobbyist on Today at 10:20:39 am »

Yes, I will list a top x later, thank you for your suggestion.

I would be a good idea to have a poll, about what feature are needed/liked the most. You can create one here in the forum.

Try not to disturb everyone as much as possible. Based on my experience, I have added the Top 10 Wanted Features or Improvement section, and currently there are 8, reserve a few positions for important suggestions in the future.

7

Test Equipment / Re: SDS800X HD Wanted Features

« Last post by 2N3055 on Today at 10:10:13 am »

I thought it was about maybe giving some ideas that might be useful to Siglent to add to their scope.
I'm sorry to be bearer of bad news, but Siglent won't redesign their scopes completely for what amounts to 4 people in total, and writing completely personal opinions how something should be made. Nor will any other manufacturer from Owon to Keysight.

- Fonts size is already too small. Scope actually has option to make fonts larger, because many people cannot read them otherwise at distance scope is kept when working, at hands length. It is not a phone a teenager keeps in their face.
- Anything that needs change of architecture won't happen. Just be realistic.
- Anything that only 30000 USD scope have won't be added... Look up word realistic.
- Nothing that is not common to platform won't be added. I already explained why before.
- Nothing that means Siglent needs to use different graphical platform or toolkit won't happen. Guess why.
- Nothing that is individual people wanting customizations that reflect only their workflow. All can vote but majority wins.

It is not like scope designs are made at the whim of some clueless engineer in a company and no user input and market research was done at all...  Siglent might be "young" compared to Keysight, but there are many thousands of engineer years of experience in doing scope design in that company so far. They know what they are doing.

Any multifunction device (and scope is VERY multifunction device) will have to be a best possible compromise. That is the whole crux of engineering.
Not everything is possible and no device will be made according to everybody's idea "how they would have done it".

It reminds me when in my country, when football world championship is going on, in sports bars all those "experts" with beer in their hand, know better than National Head coach or National Team Manager how it should be done and how if they had lead the team they would have won the World Cup. 
It is easy when you don't have to do the work, and nobody holds you responsible for anything.

I personally could write a full A4 page of all the stuff I don't like and find suboptimal and outright bad or wrong on my Keysight
MSOX3104T.  But it is still darn good scope with it's own advantages. You learn how to use it and then simply use it.

A good example of improvement: A user mentioned that a "Bit rate" measurement to be added. That would be possible, it is not outlandish (we have pulse width measurement, there is statistics, there is place to show it etc..). That is something Keysight scopes have and is useful when you are dealing with reverse engineering or working with custom baud rates on serial interfaces.

Bad example: I would like screen to be redesigned so it doesn't resemble what it is now.

8

Repair / Re: Com Express Motherboard - No Image

« Last post by alm on Today at 10:09:04 am »

Thanks for updating us with the solution! This could be helpful if another person runs into the same problem.

9

Test Equipment / Re: SDS800X HD - Issue disscusions - is it me, or the scope?

« Last post by electronics hobbyist on Today at 10:06:22 am »

I have another issue:
I set up a qualified trigger, but the edge trigger is not stable.
The deviation gets worse, if i set the trigger level lower.

Can you explain your input signal? If you adjust the C4 vertical gear down, will there be a problem? I did not reproduce this problem; You can attach setup.xml. If the configuration is the same, it should be related to the input signal.

10

Test Equipment / Re: Looking for a replacement general purpose oscilloscope for home use

« Last post by moerm on Today at 10:06:07 am »

AFAIK a 1 GHz and a 2.5 GHz active probe is all they offer so far (and with very little info/details).

You overlooked Siglent's recent inhouse design of 5 GHz differential probes.
https://siglentna.com/products/accessories/probes/active-probes/

They are not listed as accessories for any of the lower BW models other than for the current 3&4 GHz SDS7000A range.....later this year to be expanded to include 6&8 GHz models.

Well, I related to what I could find on Siglent's website. But anyway, good news! Thanks.

ROFLMAO!!  I need an account to view the change logs.  The Teledyne/LeCroy gods have not deemed me worthy of such privilege.   

What's to complain about, you low-life who dared to (AFAIK) never buy TME worth millions of $ from them, and who, to make things worse, dared to "infest" many with a "I like LeCroy" virus?!

I'm an example of your "victims". I always took you to be someone who again and again, intentionally or not, showed a LeCroy scope to be something nice and desirable.

On a more serious note: situations like this one are appalling to me. How a largish corporation dares to clearly not give a flying f_ck about a grown up man/customer, no matter whether direct or indirect, who (AFAIK) never uttered anything in any way unfair about them.

One more reason for us to hope and wait for somewhat equivalent alternatives from Siglent and possibly others. And @Siglent, pay attention! There's an important lesson to learn here. Stay the way you are, continue to listen to customers and to treat them well and fair!