NEW Keysight HD3

[ballsystemlord]

I'll just say that someone likes to argue, without naming anyone in particular

Dave. It's gotta be Dave he's talking about. Why Dave, why? 

[Someone]

More derailments?

Anyway, I don't think so. I think it was a sincere question

A sincere question that was strung along for multiple posts without adding the asked for context/explanation (still haven't at this point). How is that sincere? It's straight out troublemaking and the replies with their "lol" continued the trend. Why add more noise defending it? I've politely asked you to show the in the explanation where the context was provided, but you did not  (can not?).

There's also no example of the HD3 filtering or isolating frequencies, which was the question, and why it's not off topic.

The other models, mine included, are not awesome at doing that. Maybe they can, but not great. If the HD3 is better at it, that would make it a desirable product for that reason. I'm not sure what's hard to comprehend about that or why you think comparing this scope to another (where this scope has an opportunity to shine) is off topic. The point of these topics is literally to do that. It's not paid advertising, it's to learn more about specific tools and whether or not it's something that fits a user's needs.

Again, where is Martin72 trying to do any of that? Where is the information of what other scope cannot do that could be compared against? egonotto and I are trying to steer it back to the thread topic but instead you're trying to argue that everything is fine and there is no problem... noise on noise.

So, you claim that Martin72 has been on topic and posted legitamate questions/comparisons that we should consider. If that is so then why is it so hard to quote that and show it?

All I see is "nah cant do thing" with still no explanation of what this thing is and why it cant be done.

[KungFuJosh]

All I see is "nah cant do thing" with still no explanation of what this thing is and why it cant be done.

Well, whether I agree with your perspective on that or not (I don't), your comments weren't on topic or adding to the conversation in anyway. Just more noise. Myself, and others, understood what he was asking and investigated it with the scopes we have. Now somebody who both has the luxury of understanding, and an HD3 scope can also check.

Until then, this conversation is pointless. 🤷

ETA: In reply 822 you quoted his description of the problem, and said you could do it (without an example). In reply 824 he replied to you and said if the Keysight can do it, he would like to have one. I don't see what the issue is at all.

[Someone]

All I see is "nah cant do thing" with still no explanation of what this thing is and why it cant be done.

Well, whether I agree with your perspective on that or not (I don't), your comments weren't on topic or adding to the conversation in anyway. Just more noise. Myself, and others, understood what he was asking and investigated it with the scopes we have. Now somebody who both has the luxury of understanding, and an HD3 scope can also check.

Until then, this conversation is pointless. 🤷

ETA: In reply 822 you quoted his description of the problem, and said you could do it (without an example). In reply 824 he replied to you and said if the Keysight can do it, he would like to have one. I don't see what the issue is at all.

I still dont have the conditions under which a unamed/non-specific scope cant produce a 1kHz filtering. Why is this some secret information? If people say thing cant do thing and then do not explain what thing they are talking about and in what situation, then it is completely correct to ask for the information.

Instead we've had a pile of "nah cant do thing" and still no explanation of what that thing actually is.

You're saying it's all obvious and explained. So why cant you show it or quote it? Should be simple. You say my comments are off topic? which comment? All the option open for you to explain, but instead you use non-specific points same style as what started this confusion.

I've been consistently asking for the explanation of what challenges there are for low pass filtering in scopes. I have not come across them, yet a member claims they are so significant there is no scope they know of that can do it (plainly false).

[KungFuJosh]

I've been consistently asking for the explanation of what challenges there are for low pass filtering in scopes. I have not come across them, yet a member claims they are so significant there is no scope they know of that can do it (plainly false).

I told you the reply numbers that has that information. He has a signal that contains both a 10kHz sinewave, and a 400Hz sinewave. He wants to filter out the 10kHz sinewave so he can view the 400Hz wave. Preferably by trigger filter, but a math filter is the only way I can do it.

What other information do you need? You stated previously that you could do this also.

[Someone]

I've been consistently asking for the explanation of what challenges there are for low pass filtering in scopes. I have not come across them, yet a member claims they are so significant there is no scope they know of that can do it (plainly false).

I told you the reply numbers that has that information. He has a signal that contains both a 10kHz sinewave, and a 400Hz sinewave. He wants to filter out the 10kHz sinewave so he can view the 400Hz wave. Preferably by trigger filter, but a math filter is the only way I can do it.

What other information do you need? You stated previously that you could do this also.

As I've been saying, that information as you have enumerated is a condition for various scopes in which there is no problem at all to filter. Yet, some people are claiming "cant be done", then won't add what is the actual problem or getting in their way. Just repeat "cant be done" with no more information.

If it cant be done then why can I do it with no problem? Even a lowly SDS1200X-E, still has an eres acquisition mode that makes it possible.

[KungFuJosh]

I've been consistently asking for the explanation of what challenges there are for low pass filtering in scopes. I have not come across them, yet a member claims they are so significant there is no scope they know of that can do it (plainly false).

I told you the reply numbers that has that information. He has a signal that contains both a 10kHz sinewave, and a 400Hz sinewave. He wants to filter out the 10kHz sinewave so he can view the 400Hz wave. Preferably by trigger filter, but a math filter is the only way I can do it.

What other information do you need? You stated previously that you could do this also.

As I've been saying, that information as you have enumerated is a condition for various scopes in which there is no problem at all to filter. Yet, some people are claiming "cant be done", then won't add what is the actual problem or getting in their way. Just repeat "cant be done" with no more information.

If it cant be done then why can I do it with no problem? Even a lowly SDS1200X-E, still has an eres acquisition mode that makes it possible.

How about sharing some examples and screenshots for the methods you use?

I shared what I did with math, but it wasn't ideal. Trigger filtering would be better, and I don't know what scopes can do that.

[Someone]

If it cant be done then why can I do it with no problem? Even a lowly SDS1200X-E, still has an eres acquisition mode that makes it possible.

How about sharing some examples and screenshots for the methods you use?

99% chance the person with the problem will reply with "no but that uses XXX or condition YYY which I cannot use for new reason never before shared"
If someone says it is impossible to do something and then multiple other people say why do you think it is so hard we can do that fine, can you not see where the problem is?

It is entirely right to call out the person making the unbelievable claim and ask them for the justification of their claim. Rather than ask everyone else to produce an exhaustive example of every single way it can be resolved (already plenty of examples in this thread, so there should be no question at this point).

[eplpwr]

Is this thread about the Keysight HD3?

[Anthocyanina]

bringing this back to hd3 related stuff, did anyone ever get the /find/egg bits and bobs they said would give away to a few people posting on linkedin about finding the hd3 easter egg?

[nctnico]

Is this thread about the Keysight HD3?

No, not anymore. Someone hyjacked it to instigate endless circular discussions while providing no meaningfull input by him/herself per usual MO.

[EEVblog]

Please keep this thread HD3 relevant. Thanks.

[egonotto]

Hello,

what are the limitations of the low-pass filter (Math) of the HD3?
If you set a cut-off frequency of 1 kHz, what must the sample rate be?
I can't find anything about this in the manual.

Best regards
egonotto

[nctnico]

Hello,

what are the limitations of the low-pass filter (Math) of the HD3?
If you set a cut-off frequency of 1 kHz, what must the sample rate be?
I can't find anything about this in the manual.

I guess you have to figure this out by yourself. The main problem is that the HD3 uses decimated data so you have to take into account the decimation rate which could alias higher frequencies back to lower frequencies. Your only way out is IF the HD3 allows to disable decimation entirely. I did some experiments using frequency sweeps with the R&S RTM3004 which also uses decimated data for filtering and this lead to unreliable results. Especially if you just want to set a filter cut-off frequency and be done with it. As I wrote before, filtering and decimated data are not a good combination; it is just too error prone.

[NoFanBoy]

Seems like a 2 series screen, with 3 series features and a 4 series price point. Way to go KS. lol

[electr_peter]

FW update for HD3 is available - XY & roll modes are among new features, multiple bug fixes.

Release Date: 15 October 2024
Instrument software version: Revision 10.05.2024100325
New Features
This software revision includes the following new capabilities:
- Added horizontal time modes: XY mode and Roll mode. By default, Normal mode is
enabled.
- Added support for Keysight PathWave 89600 VSA 2025 (Vector Signal Analysis)
- Added bandwidth limiting by channel