The trick is not to use the picosocope trigger (so it will never trigger). Then scan the data coming in from the stream and log or register the interesting moments, eg ch1 value > 3.3v, and keep saving the streaming data from the scope and register the events. Then you can later analyse the data and...

I was looking at the PS4000 streaming functions and noticed the following. in the CallBackStreaming function the global variables g_sampleCount and g_ready are set before the data is copied to the application buffers. In single threaded applications (and the pico core is also single threaded) this w...

Is the current version of the SDK compatible with the 4444 ?
I suppose not because the latest version is from before the release of the 4444.

For the record 32bit C++

Benno

at 16k and 8 ch it should be possible to stream for a couple of day's this is 128k word / sec = 256k byte / sec this will be about 920 MB / hour, if you write the data to disk then you can keep this up for a couple of days. You will only need to do the triggering in software on the incoming data (no...

if you do streaming mode in the SDK you could do 10Ms/sec (this will give you a 100nS per sample) And depending on the memory or how you write the software you can measure this with 100nS accuracy. If they appear once every hour you need to do real-time data processing on the sampled data. 1 hour wo...

You can use a floating DC power supply in series with the AWG output (or use a battery) so you will adding this DC value to the output of the AWG.

Benno

Do you only want to use it for square waves, e.g. on off ?
If so it will make things a lot easier.

Benno

Because you system has quad cores the value you see needs to be multiplied by 4.
So 1 core (the core picoscope is running on) is utilized by 96%, so you are at the max of your PC.
Some processes can be split on multiple cores / threads. others are not.
But your assumption of 24% is wrong !

Benno

Be aware that a square wave of 1 kHz has higher harmonics running into several hundreds of kHz even MHz.
So that is why you lose the flanks on a audio amplifier.
I you want to make a square wave of 60V or something then i would suggest using mossfets.

Benno

Taht is because the realtime RMS was calucated over the last 20 captures.
capture count colum.
The saved value shows 1
The realtime value shows 20.

Benno

Julian,

The difference you see is 17mV on a +/- 10V scale of the scope
this is a error of 0.085% this is well below the specified tolerance of 1% of the scope.

And also near the LSB of the scope in this range it is 5 mV for the LSB

Just my 2c

Benno

If the frequency stay below 20kHz then you can use a regular audio amplifier.
If you want even higher voltages you can use a tube audio amplifier

Benno

Ben, Reading your post I remembered seeing something a while ago. (ok a long while ago 8) ) https://www.picotech.com/support/topic11185.html And the result. http://codeandlife.com/2012/07/31/realtime-composite-video-decoding-with-picoscope/ And in color http://codeandlife.com/2012/09/12/color-compos...

Can you post a .psdata example file ?

Benno

Also specify how you are measuring, e.g. probe 1:1 or 1:10 or Banana jacks or BNC connector with wires or something like that.

Be also sure to not touch none of the wires (your body is a great antenna for this kind of stuff)

Benno