Search found 37 matches

by Ben321
Mon Mar 12, 2018 7:06 pm
Forum: USB PC Oscilloscopes
Topic: Antialiasing filter strength?
Replies: 5
Views: 2836

Re: Antialiasing filter strength?

Hi Ben321, You may be placing to much emphasis on aliasing. As explained why, on a previous post, our PicoScopes don't have anti-aliasing filters. So, if you don't want aliasing you need to limit the frequency content of your signal and/or provide a large enough frequency range between the non-atte...
by Ben321
Sat Mar 10, 2018 9:01 pm
Forum: USB PC Oscilloscopes
Topic: Antialiasing filter strength?
Replies: 5
Views: 2836

Antialiasing filter strength?

I have a Picoscope 2204A, and discovered that it can alias signals that are higher than the nyquist frequency. That is, when sampling at its maximum sample rate of 1MHz (maximum sample rate for fast streaming, which is needed for my application), the maximum frequency it should receive (nyquist freq...
by Ben321
Sat Mar 10, 2018 9:56 am
Forum: VB and VBA (Excel, Access)
Topic: Why does the Picoscope DLL keep crashing my program?
Replies: 2
Views: 3643

Re: Why does the Picoscope DLL keep crashing my program?

Can you post your complete code here, or email it to support@picotech.com, I an guessing you may not have set up the channels and matching buffers correctly. Finally got it to work. Internally in VB6, when you use True with type Boolean, what VB6 converts that to is -1 being passed to Signed Short ...
by Ben321
Fri Mar 09, 2018 11:45 pm
Forum: VB and VBA (Excel, Access)
Topic: Why does the Picoscope DLL keep crashing my program?
Replies: 2
Views: 3643

Why does the Picoscope DLL keep crashing my program?

Ok, I finally figured out how to set up my program in VB6. My code gets the device's handle, etc, and everything works up to the point that it calls the function to start streaming, which is ps2000_run_streaming_ns. But then my program crashes with a Divide By Zero error. The line of code that calls...
by Ben321
Fri Mar 09, 2018 7:31 pm
Forum: VB and VBA (Excel, Access)
Topic: How much support does the SDK have for VB6?
Replies: 1
Views: 3362

How much support does the SDK have for VB6?

My plan is to use VB6 (not VB.net or newer, nor to use C++) to write my application. What files (like DLLs or OCXs) will I need to control my Picoscope 2204A from VB6? Is there a manual, or sample applications that I can get somewhere, that cover the topic of using VB6 with the Picoscope SDK?
by Ben321
Fri Mar 09, 2018 6:50 pm
Forum: PicoScope 6 for Windows
Topic: How do I force Picoscope to use streaming mode?
Replies: 5
Views: 3138

Re: How do I force Picoscope to use streaming mode?

try setting timebase to 1 or 10 sec / division. (or longer depending how long you want the trace to be) ans max samples to 100Ms Then you get a single trace for 10 or 100 sec without gaps. Between traces are always gaps. So you can only use a single trace. Otherwise use the SDK for streaming mode a...
by Ben321
Fri Mar 09, 2018 6:47 pm
Forum: General Software Discussions
Topic: Which SDK do I install?
Replies: 2
Views: 2332

Re: Which SDK do I install?

Hi Ben321, You can install both the 32-bit and 64-bit PicoSDK on a 64-bit operating system and just the 32-bit PicoSDK on a 32-bit operating system. If you are developing a 32-bit application you will need the 32-bit PicoSDK and that should then run on your 64-bit operating system. As an example, t...
by Ben321
Thu Mar 08, 2018 11:38 pm
Forum: General Software Discussions
Topic: Which SDK do I install?
Replies: 2
Views: 2332

Which SDK do I install?

There's a 64bit SDK and a 32bit SDK. I know the driver for my hardware must be the 64bit driver as my PC is a 64bit PC. However, the application I intend to develop is a 32bit application. Does the 32bit SDK install only 32bit drivers? Or does the 32bit SDK only refer to using it to create a 32bit a...
by Ben321
Thu Mar 08, 2018 10:12 pm
Forum: PicoScope 6 for Windows
Topic: How do I force Picoscope to use streaming mode?
Replies: 5
Views: 3138

How do I force Picoscope to use streaming mode?

I want to force Picoscope 6 software to use streaming mode, rather than block mode, so I can record the signal stream to a file (for later analysis in other software). I can't find any "Activate USB Streaming Mode" option in the software's settings. It seems to always use block mode, no matter what,...
by Ben321
Mon Feb 26, 2018 11:13 pm
Forum: Pre-Sales Advice
Topic: What exactly is its sample rate?
Replies: 6
Views: 3616

Re: What exactly is its sample rate?

USB2 line rate is approximately 48MB/s. With the 5000 series devices it is possible to continuously stream on a single channel at 15.625 MS/s with the full 16 bit resolution using the SDK. You can set a faster streaming rate, up to 62.5MS/s, but this is only sustainable for very short time frames m...
by Ben321
Sun Feb 25, 2018 7:43 pm
Forum: Pre-Sales Advice
Topic: What exactly is its sample rate?
Replies: 6
Views: 3616

Re: What exactly is its sample rate?

Sorry misred the 5000 series is USB2 and so limited to max USB2 streaming speed. So your best bet is about 15MS/sec for usb2 and the SDK, depending on hardware config of your PC. Thanks. And does increasing its bit-depth from 8-bits-per-sample to 12-bits-per-sample slow this down? Or can I expect t...
by Ben321
Sun Feb 25, 2018 9:19 am
Forum: Pre-Sales Advice
Topic: What exactly is its sample rate?
Replies: 6
Views: 3616

Re: What exactly is its sample rate?

It is usb3 you can go far beyond the 12Ms/s from this page https://www.picotech.com/library/oscilloscopes/streaming-mode USB 3.0 is about ten times faster, with a theoretical maximum transfer rate of about 400 MB/s. USB 3.0 PicoScopes have exceeded 150 MS/s in tests. And if I remember correctly, da...
by Ben321
Sun Feb 25, 2018 8:50 am
Forum: Pre-Sales Advice
Topic: What exactly is its sample rate?
Replies: 6
Views: 3616

What exactly is its sample rate?

With the Picoscope 5000, what exactly is its maximum sample rate? I'm looking at the different sources of info on it from the various pages on your site. On this page https://www.picotech.com/library/oscilloscopes/streaming-mode it says that the maximum USB streaming sample rate for the 5000 series ...
by Ben321
Sat Jul 22, 2017 7:03 pm
Forum: USB PC Oscilloscopes
Topic: Question about Streaming and Block transfer modes
Replies: 7
Views: 4111

Re: Question about Streaming and Block transfer modes

the 2204A has only 8kb buffer memory, have you calculated how short of a hick-up in USB streaming causes a buffer overflow, at that speed even a mouse click can cause a buffer overflow. Go for a scope with enough memory to buffer at least 0.5 sec of data at your max streaming speed. And USB3 is a l...
by Ben321
Fri Jul 21, 2017 7:57 pm
Forum: USB PC Oscilloscopes
Topic: Question about Streaming and Block transfer modes
Replies: 7
Views: 4111

Re: Question about Streaming and Block transfer modes

I hope this helps but if you need further clarification, please post back here. It would be useful to know the number of channels you require, the sampling rate, the number of samples per channel and the number of waveform you would like to capture. I need only one channel, and its bandwidth must b...