Search found 604 matches

by bennog
Mon Nov 28, 2022 6:34 am
Forum: Pre-Sales Advice
Topic: Choosing a USB oscilloscope to automate measurement & North American FAE
Replies: 1
Views: 11

Re: Choosing a USB oscilloscope to automate measurement & North American FAE

Pico themselves has to answer about the pico contact. Few questions. 1. few hundreds kHz is rather wide range can you be more specific. 2. If you want more than 2 channels use a USB3 scope with a lot of memory. 3. How accurate do you want to measure the PWM values. 4. Do you need to measure them all...
by bennog
Fri Nov 25, 2022 7:18 am
Forum: Pre-Sales Advice
Topic: Advice on PWM output from particle sensors
Replies: 4
Views: 128

Re: Advice on PWM output from particle sensors

the SDS011 does not output PWM it outputs a serial data stream RS232 at 3.3V cpu levels. So in theory you can monitor this with for example a arduino or a raspberry PI. or with the ESP8266 as in your example The BME280 has a I2C interface where you need to send a request and get the data back (there...
by bennog
Fri Nov 18, 2022 4:14 pm
Forum: Projects
Topic: Logic analyzer data: Only receive triggered data (with timestamp) using Python
Replies: 13
Views: 321

Re: Logic analyzer data: Only receive triggered data (with timestamp) using Python

You can use block mode but then you will have the limit of max 48k samples and you need the scope trigger functionality.

but 500kS/sec is more than sufficient for 57600 baud (or do you really mean 5.7mbaud)

can you post a psdata where you show what you want to trigger on.

Benno
by bennog
Fri Nov 18, 2022 10:39 am
Forum: Projects
Topic: Logic analyzer data: Only receive triggered data (with timestamp) using Python
Replies: 13
Views: 321

Re: Logic analyzer data: Only receive triggered data (with timestamp) using Python

In streaming mode you get a constant stream of data from the scope for as long as you want. Then you can evaluate the data while it is streaming into your application and when you see the data pattern you want save the part from that point on or data before that point and the length you want as ofte...
by bennog
Fri Nov 18, 2022 6:26 am
Forum: Projects
Topic: Logic analyzer data: Only receive triggered data (with timestamp) using Python
Replies: 13
Views: 321

Re: Logic analyzer data: Only receive triggered data (with timestamp) using Python

You can use streaming mode and do the triggering yourself. I have done this for a CAN signal where we want to trigger on a specific message-corruption ant this was streaming at 4MS/sec. I guess your UART baud rate is below 500kbps. If it is above a 2000 series scope will probably not handle this in ...
by bennog
Fri Nov 18, 2022 6:21 am
Forum: Pre-Sales Advice
Topic: PicoScope 4824A
Replies: 4
Views: 189

Re: PicoScope 4824A

You probably can. Most times I go for a 2 thread approach and a large FiFo in-between buffer of 200MB or so. If you do this right you can do this in a non blocking way and use the picoscope buffer for hiccups in the USB communication. And I always do this in C++ because that is my native language. B...
by bennog
Thu Nov 17, 2022 4:14 pm
Forum: Projects
Topic: Logic analyzer data: Only receive triggered data (with timestamp) using Python
Replies: 13
Views: 321

Re: Logic analyzer data: Only receive triggered data (with timestamp) using Python

Are you sure you want to use python ? Because then you do need to do the decoding yourselves. If you do it in picoscope you can set alarms to save the data to a file and see the signal visually and export it to CSV or something to analyse in some program. If you do it in python you need to build the...
by bennog
Thu Nov 17, 2022 7:44 am
Forum: Pre-Sales Advice
Topic: PicoScope 4824A
Replies: 4
Views: 189

Re: PicoScope 4824A

you can save to disk, the medium need to be capable of writing 16MB/sec sustained over the entire sampling period.

I would do this asynchronically because the disk can have a hiccup of 50ms to 1000ms.

Benno
by bennog
Wed Nov 16, 2022 6:44 am
Forum: PicoScope 7 Early Access for Windows, Linux and Mac
Topic: Shouldn't opening a .psdata reveal that data file in Picoscope 7 ?
Replies: 8
Views: 218

Re: Shouldn't opening a .psdata reveal that data file in Picoscope 7 ?

I have a 4444 but running windows not Linux. I guess it is a linux problem then, because you can open and read the file from within picoscope. It can be a problem with the linux port of the PS7 software or a desktop version problem. You can try running picoscope "Bessie 2 showing 50% PWM segment of ...
by bennog
Tue Nov 15, 2022 6:56 am
Forum: PicoScope 7 Early Access for Windows, Linux and Mac
Topic: Shouldn't opening a .psdata reveal that data file in Picoscope 7 ?
Replies: 8
Views: 218

Re: Shouldn't opening a .psdata reveal that data file in Picoscope 7 ?

The file opens here with ps6 and ps7 without problems.
What if you right click on the file and choose open with and then choose PS6 or PS7

Benno
by bennog
Mon Nov 14, 2022 6:31 am
Forum: PicoScope 7 Early Access for Windows, Linux and Mac
Topic: Shouldn't opening a .psdata reveal that data file in Picoscope 7 ?
Replies: 8
Views: 218

Re: Shouldn't opening a .psdata reveal that data file in Picoscope 7 ?

the .psdata file is probably corrupt or something like that.

can you post the .psdata file.

Benno
by bennog
Sun Nov 06, 2022 9:02 am
Forum: PicoScope 7 Early Access for Windows, Linux and Mac
Topic: Data missing when decoding SPI bus
Replies: 1
Views: 684

Re: Data missing when decoding SPI bus

do you have a .psdata file ?

and what about PS6 (don't know if this is for the mac)

Benno
by bennog
Fri Nov 04, 2022 1:04 pm
Forum: Introductions
Topic: Newbie
Replies: 2
Views: 763

Re: Newbie

If you want something from farnell

https://nl.farnell.com/w/c/test-measure ... -breakouts
Any one on that page will be sufficient for the AWG.

Benno
by bennog
Sun Oct 30, 2022 9:17 am
Forum: Pre-Sales Advice
Topic: Questions about PicoScope 4262
Replies: 1
Views: 214

Re: Questions about PicoScope 4262

the 4262 scope is a single ended scope (almost all scopes are) that means the negative sides of the inputs are all connected. (even grounded to the ground of your laptop / pc) You can adjust the electronics to outputs a single ended voltage output if you develop the electronics with opamps. But it w...
by bennog
Fri Oct 28, 2022 5:35 am
Forum: General Software Discussions
Topic: Memory leak ?
Replies: 3
Views: 324

Re: Memory leak ?

Best if you post your stripped down code so somebody can look at it.
I have had a PS4000 series scope running for months in streaming mode without a problem in C++.

Benno