When would it be available for PCS500? I could not realize difference in versions of PC LAB for various models. Just downloaded v4.0.4 Alpha, screen size has not been increased for PCS500, it is a pity.
I’m sorry but the PCS500 software is no longer updated very intensively.
This means that, in future, only bug fixes will be done.
Hi. I’m new here, but I have read the forum now and then for a long time.
[quote=“VEL255”]Now the PCSGU250 software is updated too.
The persistence modes are now: “Infinite Persistence”, “Color Graded Persistence” and “Variable Persistence”. You’ll find these options in the View menu.
To the Options menu there is added option: “Persistence Options”.
Please see also the Help menu for more info.
[/quote]
Excellent! It works great! I use the PCGSU250.
But I have one questions. It seems to me there has been a fork with different versions of PCLAB2000?
I have used the modded version with updated DAC speed for outputs up to 5 MHz, described in this thread: viewtopic.php?f=10&t=5719
The problem is, that version does not support color grade persistence and the version described in this thread does not allow FG output higher than 1 MHz.
Is there a way to combine those versions? Or have two installations? Edit: And whats the difference between SL and LT versions?
It’s nice to see you like the new features of the PCSGU250 !
The 5MHz version is made for test purposes only.
The latest “official” version 1.10 will be soon put on the Velleman web site.
This version will not have the 5MHz option.
[quote]Or have two installations?[/quote]This seems to be the best choice.
[quote]And whats the difference between SL and LT versions?[/quote]The LT version is only for the PCSGU250.
The SE version is for other oscilloscopes and function generators (e.g. PCSU1000, PCGU1000, PCS10).
[quote=“VEL255”]It’s nice to see you like the new features of the PCSGU250 !
The 5MHz version is made for test purposes only.
The latest “official” version 1.10 will be soon put on the Velleman web site.
This version will not have the 5MHz option.
[quote]Or have two installations?[/quote]This seems to be the best choice.
[quote]And whats the difference between SL and LT versions?[/quote]The LT version is only for the PCSGU250.
The SE version is for other oscilloscopes and function generators (e.g. PCSU1000, PCGU1000, PCS10).[/quote]
Oh, that’s too bad! The 5 MHz works very well for me, with a minimum of attenuation and distortion.
Another questions of the same type: The slowest possible setting of the generator is 5 mHz. I find that very useful in combination with a arbitrary waveform to make stimulus in certain constructions. Is the lowest speed a HW limitation or an software one? Sometimes I need to make a very slow waveform with a period of many minutes or even hours. Is this possible?
The lowest frequency is not hardware limited.
In sweep mode you can use 0.1mHz.
The sweep mode is sine only.
Now you can download the modified software (the 5MHz version).
In this modified version the lowest frequency for all waveforms is now 0.1mHz (period 10000 seconds = 2h 46min).
Here is the download link: box.net/shared/tnxc4aigss
[quote=“VEL255”]The lowest frequency is not hardware limited.
In sweep mode you can use 0.1mHz.
The sweep mode is sine only.
Now you can download the modified software (the 5MHz version).
In this modified version the lowest frequency for all waveforms is now 0.1mHz (period 10000 seconds = 2h 46min).
Here is the download link: box.net/shared/tnxc4aigss[/quote]
Thank you! Your support is amazing! The modification is truly useful for me!
One last question: The duty cycle of square wave, is the limit 10-90% again HW limited or SW? I understand that a DDS function generator has limited possibility to generate very small (or large) duty cycle at certain speeds (when the “add” parameter in the memory stepping is near or greater than the setted duty), but would it be possible to use a 1% (or 0.1%) duty for some ranges (or with a limited precision or big jitter on all ranges)?
Edit: I now have two installations on the same computer, one with digital phosphor, the other is the version with greater ranges (0.1 mHz to 5 MHz). It works very good. Since “digital phosphor” only is useful with external signals anyway, the separation is totally okay! 
[quote]One last question: The duty cycle of square wave, is the limit 10-90% again HW limited or SW? I understand that a DDS function generator has limited possibility to generate very small (or large) duty cycle at certain speeds (when the “add” parameter in the memory stepping is near or greater than the setted duty), but would it be possible to use a 1% (or 0.1%) duty for some ranges (or with a limited precision or big jitter on all ranges)?[/quote]The duty cycle range is practically “hardware limited”. There are max. 512 samples in one cycle of the waveform. The jitter should increase if the duty cycle is very low or very high.
At 10% duty cycle (51 samples) the jitter is about 2%.
If the duty cycle is 1% (5 samples) the jitter should be about 20%.
You may anyhow try the duty cycles beyond the PCSGU250 range by using library waveforms.
Please see this thread for some library file examples: viewtopic.php?f=11&t=5911
Truly awesome! This is by far the best scope for the money, bar none. VEL255, you are truly the master of customer requests!