Search found 315 matches

by hexamer
Mon Jan 03, 2022 2:43 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Hello Kai, I was able to reproduce the issue and determine the root cause. There was a bug in 0.6.2b RC4 that assumed the wrong maximum timebase for scopes using the the PS2000 driver. Instead of 23 (11.9 Hz), it was coded to 19 (190.7 Hz). This raised the minimum frequency to the values you see. A ...
by hexamer
Sat Jan 01, 2022 5:28 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Hello Kai, I was also trying to make attachments yesterday to show you where to go in the UI to get those parameters. It used to be that making attachments was just difficult, but now it seems impossible :( Can you report back these parameters to me: Which radio button is checked: Low noise mode, or...
by hexamer
Fri Dec 31, 2021 10:43 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Hello Kai, Usually messages like that are related to sampling settings. If you can tell me what settings you are using, I can explain why it's limited in that way. I'm specifically interested in the Tools->Settings, FRA Execution Options and FRA Sample Settings. I can tell you that with out-of-the-b...
by hexamer
Mon Dec 27, 2021 3:46 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Hi Aaron, sometimes I would like to use my PicoScope 2204A and FRA4PicoScope to make an absolute measurement of voltage vs frequency without having a reference channel. Your program allows to choose between A & B as Input Channel or Output Channel. For a transfer response I would normally use A as ...
by hexamer
Sat Dec 18, 2021 6:52 pm
Forum: C and C++
Topic: What Pico SDK version is better (I must use)?
Replies: 1
Views: 4338

Re: What Pico SDK version is better (I must use)?

I have a pc with system Microsoft Windows7, x64. I will do *.exe files with a Borland C compiler x32, [v5.0 b12.34] What Pico SDK version may/must I use: Pico SDK x32 or Pico SDK x64? [I would like run *.exe files also in a Window x32 machine (like laptop!)] Thank for reply, Michele Hi Michele, Ult...
by hexamer
Sun Oct 10, 2021 2:05 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Thank you for reporting your experience. Can you tell me what error code you're getting during initialization? Sure, this is the error message I see with 5444D scope (serial number obscured **** by me) ps5000aSetChannel( 16384, 2, 0, 0, 0, 0 );Fatal error: Failed to disable channel: 290 Status: 544...
by hexamer
Wed Sep 22, 2021 11:39 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Aaron - thank you for a very useful tool for all picoscope owners. A few pages back, someone reported a problem when using a 5443D. I believe the reason for that issue was not having the power supply connected to the picoscope. The four channel 5000 seri...
by hexamer
Sat Jul 31, 2021 2:52 pm
Forum: General Software Discussions
Topic: Picoscope 4000 series communication with PC using sdk python wrappers
Replies: 1
Views: 7379

Re: Picoscope 4000 series communication with PC using sdk python wrappers

Maybe try installing numpy manually: pip install numpy

Make sure it's a version is at least 1.12.1
by hexamer
Sat Jul 31, 2021 2:41 pm
Forum: General Software Discussions
Topic: Control Picoscope 6000e both with .net application and Pico software
Replies: 1
Views: 6423

Re: Control Picoscope 6000e both with .net application and Pico software

Multiple applications accessing a single scope is not supported. In general, even if the DLL did support it, it would be very difficult to coordinate between the applications. They'd have to be designed to be cooperative so they don't put the scope into some unintended state. I'm guesssing the PicoS...
by hexamer
Mon Jul 26, 2021 11:46 pm
Forum: Getting Started
Topic: Spurious peak
Replies: 3
Views: 6864

Re: Spurious peak

I guess that will sort it? Generally, yes. Here's a good overview of the application of the FFT in the PicoScope's Spectrum Mode, including some good advice on how to pick FFT parameters: https://www.picotech.com/download/brochures/PT-012746-DO-2-AR501_Fast_Fourier_Transform_(FFT)_white_paper.pdf A...
by hexamer
Sun Jul 25, 2021 9:05 pm
Forum: Getting Started
Topic: Spurious peak
Replies: 3
Views: 6864

Re: Spurious peak

JC, It's probably just aliasing, which is to be expected if you have frequency content above half the FFT's sample rate. See this thread for examples and explanation: https://www.picotech.com/support/viewtopic.php?p=145832#p145832 If you could tell us about the frequency content of your signal, we c...
by hexamer
Sun Jul 25, 2021 8:55 pm
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Well, I'm happy you got it working :), but I can't really tell what was going on. I tried re-installing the SDK without PS6000a and ps6000 support, but can't get it to crash. Only other thing I can think of that may be relevant is what version of the Picoscope app you had installed. The FRA app is ...
by hexamer
Fri Apr 30, 2021 12:37 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

Thanks hexamer for your points and opinions. I had previously read the thread you linked along with all of the links within it, however I wasn't sure what range of freq. was being attempted in that one. By the numbers it would seem that for 100Khz and below that the 2000 series should work with the...
by hexamer
Thu Apr 29, 2021 1:48 am
Forum: Applications
Topic: Frequency Response Analyzer with Bode Plots
Replies: 629
Views: 3280373

Re: Frequency Response Analyzer with Bode Plots

I'm looking to do loop gain and phase Bode plots on SMPS with switching frequency 100Khz or less. Are the 2204A and 2205A capable of doing adequate FRA plots for the above scenario or is it necessary to go up to higher models with higher sample rates, memory depth, and resolution and if so what are...
by hexamer
Sat Apr 03, 2021 6:12 pm
Forum: MATLAB
Topic: Block mode measurements 5444D MSO
Replies: 1
Views: 6635

Re: Block mode measurements 5444D MSO

EDIT: I have a new guess as to what's happening here. It's possible that when the MSO device is opened, some of the digital ports are enabled. These count as channels too, so would lower your max sampling frequency. If this is the case, you need to explicitly disable them with code like this: https:...