Search found 19 matches

by phgphd
Sat Dec 16, 2023 2:44 am
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Capture data without triggering
Replies: 1
Views: 5355

Re: Capture data without triggering

This problem was solved by providing more sleep time. I was capturing 32K of data. In the sample code provided I was waiting 10 milliseconds, which is not enough. That actually makes sense, since at 0.5 microseconds per sample, capturing 32K takes 16 milliseconds. I increased the sleep time to 18 mi...
by phgphd
Fri Nov 17, 2023 12:45 am
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: timeIndisposedMs
Replies: 1
Views: 1989

timeIndisposedMs

What is the purpose of the timeIndisposedMs parameter in the call to ps4000aRunBlock call? The description provided by the Programmer's Guide may be interpreted to mean that the programmer has to provide some delay time following the trigger before reading out the data. However, all programming exam...
by phgphd
Mon May 22, 2023 10:38 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Capture data without triggering
Replies: 1
Views: 5355

Capture data without triggering

Using Picoscope 7 API on 4424A on Ubuntu 22.04. I want to capture data in block mode without causing a trigger. I thought the following code should work, but it does not. The ps4000aGetValues() returns error code 25hex, PICO_NO_SAMPLES_AVAILABLE. Why? sts = ps4000aStop(mConfig.device); // stop any p...
by phgphd
Wed Apr 05, 2023 9:24 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: USB 2.0 on Picoscope 4424A
Replies: 2
Views: 802

Re: USB 2.0 on Picoscope 4424A

Consider this problem resolved. I am successfully talking via USB 2.0 through my 50 foot USB extension cable. The connection is somewhat problematic in that initially opening the Picoscope is successful only 50% of the time.
by phgphd
Tue Apr 04, 2023 10:42 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Windowing with PWQ trailing edge trigger
Replies: 2
Views: 790

Re: Windowing with PWQ trailing edge trigger

Understood, but disagree.
by phgphd
Fri Mar 31, 2023 5:26 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: PicoVersion.h included in ps4000aApi.h in Picoscope 7 SDK
Replies: 0
Views: 6010

PicoVersion.h included in ps4000aApi.h in Picoscope 7 SDK

Using Picoscope 7 SDK for Linux with 4424A Picoscope. The include file, ps4000aApi.h includes PicoVersion.h which is NOT included in /opt/picoscope/include/libps4000A folder. Same thing for PicoCallback.h. So I have copied PicoVersion.h and PicoCallback.h from the libps5000a folder into the libps400...
by phgphd
Fri Mar 31, 2023 5:01 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Return to Picoscope 6
Replies: 1
Views: 797

Return to Picoscope 6

Where on the Pico Technology website can I download Picoscope 6 SDK for linux? I am searching with no luck.
by phgphd
Wed Mar 29, 2023 9:24 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: USB 2.0 on Picoscope 4424A
Replies: 2
Views: 802

USB 2.0 on Picoscope 4424A

Using Picoscope 7 PS4000A API with Picoscope 4424A on Ubuntu 22.04. When using USB3.0 connected to Picoscope I am able to successfully block capture data, but when using USB 2.0 I am getting following error: GetValues failed: err = 37 ( 0x25 = Data is unavailable because a run has not been completed...
by phgphd
Wed Mar 29, 2023 4:53 am
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Magnitude trigger on one channel with PWQ on another
Replies: 1
Views: 638

Magnitude trigger on one channel with PWQ on another

Using a Picoscope 4424A and Picoscope 7 PS4000A API. If I set up a dual trigger situation with a magnitude trigger on channel D and a pulse width trigger on channel A, when does the pulse width counting begin? Does the pulse width counting begin when the channel D triggers or does the pulse width be...
by phgphd
Fri Mar 24, 2023 5:57 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Windowing with PWQ trailing edge trigger
Replies: 2
Views: 790

Windowing with PWQ trailing edge trigger

I don't understand why for a window trigger with PWQ the trigger occurs on the trailing edge of the window. Why not as soon as the pulse width is exceeded? The magnitude window's trigger condition is satisfied on the rising edge of the pulse so that as soon as the pulse width is satisfied the AND of...
by phgphd
Wed Mar 22, 2023 6:00 pm
Forum: PicoScope 7 for Windows, Linux and Mac
Topic: Porting triggering with PWQ from 2405A to 4244A
Replies: 2
Views: 792

Porting triggering with PWQ from 2405A to 4244A

I am porting my application from using the Picoscope 2405A to the 4244A and Picoscope 7 library API. The purpose of the application is to capture a transient pulse of bipolar characteristics. The application configures the Picoscope to use Windowing with Pulse Width Qualification triggering. The app...
by phgphd
Fri Sep 24, 2021 3:46 am
Forum: Applications
Topic: Code for window with PWQ
Replies: 0
Views: 11218

Code for window with PWQ

Provided below is sample code using the picoscope libps2000A.so API for capturing transient waveform pulses with specified upper and lower thresholds and with pulse width qualifier enabled. The transient pulses are expected to be positive going or negative going. The minimum width is set at 20 micro...
by phgphd
Tue Aug 24, 2021 4:43 pm
Forum: Projects
Topic: Window trigger with pulse width qualifier
Replies: 8
Views: 14334

Re: Window trigger with pulse width qualifier

Email sent with code embedded in email an August 12th. I have had no feedback since then. Do you need anything more from me?
by phgphd
Wed Aug 11, 2021 9:23 pm
Forum: Projects
Topic: Window trigger with pulse width qualifier
Replies: 8
Views: 14334

Re: Window trigger with pulse width qualifier

Source code sent via email.