First picture on EEVblog of the new R&S MXO4 series oscilloscope :)

[pdenisowski]

Nice clock!

The signal is actually being created by a Chinese knock-off of the old Dutchtronix clock board (sadly, no longer in production / available) - it seems that most of them are sold today to power retro CRT-style desktop clocks.  The board updates in real time as well, so I'll make a video and post it next time I'm playing around

[Bernd_2]

XY diagrams are useful for component tests, curve tracing and displaying hysteresis loops, compound and amplitude-modulated oscillations and also passband curves of filters, amplifiers, resonant circuits etc. in addition to the FRA, which ends at 100 MHz on the MXO4.

With a V/I tracker like the Tektronix TR 210 and its Chinese counterparts you can do power off troubleshooting of electronic circuits by using the technique of Analog Signature Analysis.
(e.g. see also Hameg 203-5 or HZ-65)

It would be great if in an upcoming firmware release the XYZ brightness control (also called Z-Blanking) would come back, as it is still present on the RTC1000 and also hidden on the RTB2000.

Practical, for example, for blanking the connecting lines in IQ Constallation Diagrams and some other applications.

[pdenisowski]

It would be great if in an upcoming firmware release the XYZ brightness control (also called Z-Blanking) would come back, as it is still present on the RTC1000 and also hidden on the RTB2000

Practical, for example, for blanking the connecting lines in IQ Constallation Diagrams and some other applications.

Could you explain what you mean by this?  You can use a combination of triggering and a very short time base to display constellation diagrams, etc. without connecting lines on all of our scopes (see attached example from RTM).

To my knowledge, we (R&S) have never (yet!) had true XYZ mode on any of our scopes

[Bernd_2]

Dear Mr. Denisowski,
Thank you very much for your quick reply and the example for solving the problem with clever settings for trigger and timebase.

Unfortunately, I confused the RTC1000 with the HMO3000 in my post #301. I'm sorry about that.

I saw someone activating Z-Mode on a RTB2004 with the following SCPI commands:

“DISPlay:XY:ZSOurce CH4” to setup CH4 for Z-Input and
“DISPlay:XY:ZMODe analog” to activate the Z-Mode.

Unfortunately I don't know with which firmware version this was and it was several years ago and if this was also a mistake, I apologize for my assertion.

Many thanks also for your instructive videos on youtube, which I always watch with great interest.

Best regards
Bernd

[egonotto]

....
I saw someone activating Z-Mode on a RTB2004 with the following SCPI commands:

“DISPlay:XY:ZSOurce CH4” to setup CH4 for Z-Input and
“DISPlay:XY:ZMODe analog” to activate the Z-Mode.

...

Hello,

I'm interested in that too. In any case, these commands appear in the SCPI list of the RTA4000. Unfortunately, I don't know whether you can use them.
They do not appear in the outdated manual and it is very difficult, if at all possible, for a private individual to obtain an up-to-date manual.

Best regards
egonotto

[pdenisowski]

Thank you very much for your quick reply and the example for solving the problem with clever settings for trigger and timebase.

Hi Bernd - Happy to help!  And thank you for the kind words about my videos. 

I saw someone activating Z-Mode on a RTB2004 with the following SCPI commands:

“DISPlay:XY:ZSOurce CH4” to setup CH4 for Z-Input and
“DISPlay:XY:ZMODe analog” to activate the Z-Mode.

Hmmm .... interesting.  I did a little digging and it appears that at one time this was a supported SCPI command on the now-discontinued (older) RTM2000 series scopes (and it was also supported on the HMO3000).   

https://allice.de/wp-content/uploads/2017/04/RS-RTM-Manual-Web.pdf

To be honest, I never knew this existed and never heard of it until now, so thank you very much for the pointer! 

Best,

Paul

[pdenisowski]

Incidentally, if anyone wants to see XY mode used to display a constellation diagram in "vector" mode on an RTM

https://www.youtube.com/shorts/IpVVt4W6Frw

[Bernd_2]

Hello,
Here is another useful example for the use of XY diagrams in my opinion.

Determining the deskew value for third-party differential and current probes is only possible manually and can be done quickly with an XY diagram for current and voltage.

The attached pictures show this for the combination LeCroy DA1855A differential amplifier and the Micsig current probe CP1003B  (30 ns) as well as for the Testec TT-SI7005 differential probe and the CP1003B (only 7.5 ns).

Without deskew adjustment, the XY diagram is an ellipse whose opening depends on the skew value.

With the exact deskew value, the XY diagram is then a straight line with a 45° gradient.



Best Regards
Bernd

[egonotto]

Hello,

I now have try the commands:

“DISPlay:XY:ZSOurce CH4” to setup CH4 for Z-Input and
“DISPlay:XY:ZMODe analog” to activate the Z-Mode.

on the RTA4000.
There is no error message but unfortunately no effect either.

Best regards
egonotto

[Bernd_2]

Hello,
here I show an old method of measuring an unknown signal frequency if you only have an oscilloscope (with Z input) and an adjustable sine wave generator.

You feed the signal to be measured once directly into the X input and then again into the Y input via an adjustable phase shifter.

The phase shifter is then set so that a circle is formed (90°).

Next, increase the frequency on the sine generator until the circle with its interruptions rotates more and more slowly until it comes to a complete standstill.

The number of interruptions in the circle is then equal to the integer multiple of the frequency at the generator compared to the frequency to be measured.

The attached pictures show the method with a two-channel generator (below) with 8 kHz for X and Y (90° phase shift) and a generator with 40 and 80 kHz instead of a phase shifter.

Once with my old Hameg 412-5 from the late 70s, which has a Z input on the back, the function of which is not mentioned at all in the operating instructions.

And then with an MSO5000, where channel 3 can be used as the Z input.

[e0ne199]

as someone coming from a poor country, I still cannot imagine the salary of those who can afford an oscilloscope of this caliber and how they can obtain them 

[2N3055]

as someone coming from a poor country, I still cannot imagine the salary of those who can afford an oscilloscope of this caliber and how they can obtain them 

I assure you that even in richest countries, people who can buy this for hobby are rare.

As a side note, in rich countries wealth is very unevenly distributed.
And getting worse lately..

[skander36]

MXO4 firmware v. 2.5.2.2 is out. New functionality:

2.5.2.2 Configurable result table for power analysis (MXO4-K31) measurement quality. SCPI
commands for statistics available.
2.5.2.2 Math traces can be selected as a source for power analysis (MXO4-K31).
2.5.2.2 Trigger and Mask action Screenshot added
2.5.2.2 Bus Measurements added by MXO4-K500
2.5.2.2 I3C decoding now included in MXO4-K550
2.5.2.2 HDF5 file (.h5) export for single and multi-channel added
2.5.2.2 Added HCOPY:DATA? to retrieve screenshot via SCPI

Also @Shabaz posts about other functions and tests with H5 format and XY mode improvements on another thread:  https://www.eevblog.com/forum/chat/rs-mxo4-less-costs-more-why/msg5860709/#msg5860709
but I think this thread is more appropriate to host events and discussions about MXO44.