NEW Keysight HD3

[DaneLaw]

Quite something to see how many people on pretty much all aspects of social media that Keysight gifted these HD304MSO with 1G and close to full option pack
Even smaller YouTube channels with a tad over 2000 subscribers. and like 15 videos uploaded over a 5-year span.

No wonder, this channel-holder is out of his mind, and simply couldn't believe it with his influencer-merits, that Keysight just gifted him a 25 to 30K scope.
He admits in his details & the video' that he is out of water, on what you do with such an advanced scope, as it's quite a jump from his 2ch. 60MHz [GDS1062A] so have that in mind.
It's an interesting take on HD304MSO/1G.

Video on his HD304MSO/1G https://youtu.be/x9r6ouSlnhA?si=Z6voCYFS9dD3VREq
Channel not open for embed

[tv84]

 

[hpw]

Why is it so difficult to do the HD3 and detailed FFT measurements? Because so far I haven't seen anything. This would allow you to better assess the potential of this device. Noise and signals in different bandwidths and FFT up to 32M sizes. As well as what the sample & FFT data looks like when exported.

Hp

[pdenisowski]

all the major scope manufacturers provide an adapter to use TekProbe II probes ....The adapters generally aren't cheap, but it beats re-buying the range of probes just because you want/need to switch scope manufacturers.

Indeed. There are plenty of "manufacturer-neutral" current and differential probes, but active probes are almost always tied to a specific vendor.

I'm doing a webinar on oscilloscope probe fundamentals next month and this is one of the things I mention.  Took me forever to make the graphic

Edit: added R&S

 

https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/pdm/cl_manuals/user_manual/1326_4383_01/RT-Z2T_UserManual_en_04.pdf

[maxwell3e10]

Why is it so difficult to do the HD3 and detailed FFT measurements? Because so far I haven't seen anything. This would allow you to better assess the potential of this device. Noise and signals in different bandwidths and FFT up to 32M sizes. As well as what the sample & FFT data looks like when exported.

Hp

So far we have not seen any exported that data that make sense, in terms of data length and bit resolution. Also haven't seen believable waveform update rate measurements. I am waiting for someone who actually paid for the scope and has a bit of a buyer's remorse to do a proper review.

[hpw]

Why is it so difficult to do the HD3 and detailed FFT measurements? Because so far I haven't seen anything. This would allow you to better assess the potential of this device. Noise and signals in different bandwidths and FFT up to 32M sizes. As well as what the sample & FFT data looks like when exported.

Hp

So far we have not seen any exported that data that make sense, in terms of data length and bit resolution. Also haven't seen believable waveform update rate measurements. I am waiting for someone who actually paid for the scope and has a bit of a buyer's remorse to do a proper review.

I did some google and found from IMSAI guy the following about the HD3:


#1997 Keysight HD3 FFT                                                         , I mean more needs to come about
#1999 Keysight HD3 noise vs bandwidth                               
#2002 Keysight HD3 Probe Calibration including PP00001A    

Hp

[egonotto]

Hello,

350 mhz, 100 mhz, 50 mhz, 5 mhz. My body temperature rose by -273 °C in shock

Best regards
egonotto

[tycoon_9]

all the major scope manufacturers provide an adapter to use TekProbe II probes ....The adapters generally aren't cheap, but it beats re-buying the range of probes just because you want/need to switch scope manufacturers.

Indeed. There are plenty of "manufacturer-neutral" current and differential probes, but active probes are almost always tied to a specific vendor.

I'm doing a webinar on oscilloscope probe fundamentals next month and this is one of the things I mention.  Took me forever to make the graphic

(Attachment Link)

Edit: added R&S

 

https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/pdm/cl_manuals/user_manual/1326_4383_01/RT-Z2T_UserManual_en_04.pdf

Does R&S plan to make an Agilent Autoprobe to R&S probe adapter? The Agilent Autoprobe patent has been expired. .   
https://patents.google.com/patent/US5939875A/en

[Martin72]

Hello,

350 mhz, 100 mhz, 50 mhz, 5 mhz. My body temperature rose by -273 °C in shock

Best regards
egonotto

Custom bandwith would be a nice feature..

[egonotto]

...
Custom bandwith would be a nice feature..

Hello,

I have already thought about using a nanovoltmeter to make a single-channel oscilloscope with 200 mHz bandwidth and 20 bit resolution and noise below 0.1 uV rms
With a maximum sensitivity of 0.5 uV/div.

Best regards
egonotto
PS: Micsig MHO3 has a selectable bandwidth from 30 Hz up to the full bandwidth.

[Martin72]

PS: Micsig MHO3 has a selectable bandwidth from 30 Hz up to the full bandwidth.

Don't tease me, I dream of “filtering” a PWM signal with my scope without having to use a real filter....

[egonotto]

PS: Micsig MHO3 has a selectable bandwidth from 30 Hz up to the full bandwidth.

Don't tease me, I dream of “filtering” a PWM signal with my scope without having to use a real filter....

Hello,

I'm sorry, but I think the Micsig MHO3 can do that.
The 1 kHz signal can be seen as a special PWM signal.

Best regards
egonotto

[2N3055]

PS: Micsig MHO3 has a selectable bandwidth from 30 Hz up to the full bandwidth.

Don't tease me, I dream of “filtering” a PWM signal with my scope without having to use a real filter....

On your scope you can do this though...

150kHz modulated with 400Hz PWM

[pdenisowski]

Does R&S plan to make an Agilent Autoprobe to R&S probe adapter? The Agilent Autoprobe patent has been expired. .   

Even though the patent has expired, it is my understanding (because I need to ask) that the patent alone doesn't contain enough detailed technical information to (easily) create an adapter. 

If someone out there had that kind of information and was willing to share, I'd certainly be very happy to ask the product line if this is something they would be interested in doing.

[tycoon_9]

Does R&S plan to make an Agilent Autoprobe to R&S probe adapter? The Agilent Autoprobe patent has been expired. .   

Even though the patent has expired, it is my understanding (because I need to ask) that the patent alone doesn't contain enough detailed technical information to (easily) create an adapter. 

If someone out there had that kind of information and was willing to share, I'd certainly be very happy to ask the product line if this is something they would be interested in doing.

Here we go   

https://electronicprojectsforfun.wordpress.com/using-the-keysight-autoprobe-interface-in-your-own-projects/

https://beta2.alciom.com/wp-content/uploads/2012/04/powerprobe-1a.pdf


I am sure that other folks (including me) would buy something like this if it were coming out of R&S.  I hope the R&S marketing /product guys can take a short look.

[pdenisowski]

I am sure that other folks (including me) would buy something like this if it were coming out of R&S.  I hope the R&S marketing /product guys can take a short look.

Thanks!  I'll show it to our product planner tomorrow

[44kgk1lkf6u]

Don't tease me, I dream of “filtering” a PWM signal with my scope without having to use a real filter....

Even old oscilloscopes have a high resolution mode which does boxcar averaging.  The screenshot is a 160 kHz square wave modulated with a 400 Hz sine wave as seen on a Tektronix TDS500D.

[2N3055]

Don't tease me, I dream of “filtering” a PWM signal with my scope without having to use a real filter....

Even old oscilloscopes have a high resolution mode which does boxcar averaging.  The screenshot is a 160 kHz square wave modulated with a 400 Hz sine wave as seen on a Tektronix TDS500D.

Many scopes have some version of HiRes, but we are talking dedicated filtering, per channel.

[Martin72]

That was what I had fallen for 20 years ago.
An ancient LeCroy from 1993, PWM measured and then under math Eres +3bits was called up - and then it was a sine...
How big the disappointment was then, that it didn't work that way with newer scopes, because I just hadn't understood anything back then...

[Someone]

That was what I had fallen for 20 years ago.
An ancient LeCroy from 1993, PWM measured and then under math Eres +3bits was called up - and then it was a sine...
How big the disappointment was then, that it didn't work that way with newer scopes, because I just hadn't understood anything back then...

Keysight 1000,2000,3000,HD3
Siglent HD anything
all have selectable filters using the math channel, so its not some unobtanium feature that is impossible to find.

[DaneLaw]

Micsigs variable filter approach, though on this unit 30KHz to full bw & pr ch & XY, on newer scopes it goes down to 30Hz.

https://youtu.be/nQdbVfdP3cg?si=sdqV9B7hBQcoDswi

https://youtu.be/t-y3CpUbHlk?si=HPcLWEiSCjzJDJCM

[Martin72]

Keysight 1000,2000,3000,HD3
Siglent HD anything
all have selectable filters using the math channel, so its not some unobtanium feature that is impossible to find.

Oh, really?
I was wondering what LP, BP, HP meant...
Joking aside, try setting the lowpass to a cutoff frequency of 1kHz (filtering out a 400Hz sine wave from a 10kHz PWM).
I couldn't do it with Rigol models, nor with the digital filter package for our new Lecroys, nor with an SDS2000X HD.

[Someone]

Keysight 1000,2000,3000,HD3
Siglent HD anything
all have selectable filters using the math channel, so its not some unobtanium feature that is impossible to find.

Oh, really?
I was wondering what LP, BP, HP meant...
Joking aside, try setting the lowpass to a cutoff frequency of 1kHz (filtering out a 400Hz sine wave from a 10kHz PWM).
I couldn't do it with Rigol models, nor with the digital filter package for our new Lecroys, nor with an SDS2000X HD.

Perhaps instead of hints, suggestions, and talking sideways you could say what is the actual problem you face?

Keysight 1000x, 2000x, 3000x. I have no problem setting a 1kHz low pass filter and seeing a clear waveform from higher frequency PWM. It can be set for lower frequencies such as 10Hz or 1Hz if needed. In high res mode you even get 12bits of resolution and can zoom in. I would expect the HD3 is similar and better.

[nctnico]

Micsigs variable filter approach, though on this unit 30KHz to full bw & pr ch & XY, on newer scopes it goes down to 30Hz.

https://youtu.be/nQdbVfdP3cg?si=sdqV9B7hBQcoDswi

https://youtu.be/t-y3CpUbHlk?si=HPcLWEiSCjzJDJCM

GW Instek has variable filtering on their DSOs for almost a decade already. Filtering is really useful for all kinds of purposes; I'm surprised it is still such a rare feature. But it has to be applied to the input channel data directly, not as a seperate math channel as this may use decimated data which can cause problems (limited filtering range / unexpected behaviour) besides taking away math channels and getting rid of the trace color.

[Martin72]

Perhaps instead of hints, suggestions, and talking sideways you could say what is the actual problem you face?

Keysight 1000x, 2000x, 3000x. I have no problem setting a 1kHz low pass filter and seeing a clear waveform from higher frequency PWM. It can be set for lower frequencies such as 10Hz or 1Hz if needed. In high res mode you even get 12bits of resolution and can zoom in. I would expect the HD3 is similar and better.

I wrote that I couldn't get 1khz cut-off frequency with the filter functions, neither with Siglent, nor Rigol, nor Lecroy.
Unfortunately, I don't have Keysight available, but if it works there without any problems, I would like to have that too.