PicoScope 7 Software
Available on Windows, Mac and Linux
Reduce Sample Number in Streaming Mode
Reduce Sample Number in Streaming Mode
My question is the following: I am running the 4444a in streaming mode and I want a reduce the number of samples , how can be made?
In this case I want 1 sample every 250ms,during a long period of time.
When the callback is made from StreamingLatestValues, the g_sampleCount variable has a value of 64. Is it possible to reduce this number?
In this case I want 1 sample every 250ms,during a long period of time.
Code: Select all
uint32_t sampleInterval=250
ps4000aRunStreaming(unit->handle, &sampleInterval, PS4000A_MS, preTrigger, postTrigger, autostop, downsampleRatio, ratioMode, buffLength);
..
...
GetStreamingLatestValues(unit->handle, CallBackStreaming, &bufferInfo)
Re: Reduce Sample Number in Streaming Mode
I'm trying to use ps4000aGettimebase(). With this function i can specify the number of samples and the time interval between readings. Can this be used in streaming mode?
I know that I can specify the time interval between readings when I call ps4000aRunStreaming() but not the number of samples.
I know that I can specify the time interval between readings when I call ps4000aRunStreaming() but not the number of samples.
Re: Reduce Sample Number in Streaming Mode
You don't need to use GetTimebase, that is for Block Mode, you specify the sample interval directly in the streaming function together with the time units. sampleInterval will need to be 250, and time units PS4000A_MS, with pre and post trigger samples set to what you need. and with autoStop set to false it will stream indefinitely.
Martyn
Technical Support Manager
Technical Support Manager