PicoSocope 4425 and PicoScop6 6 Automotive Beta 6.13

Trying to get a better understanding of sample rates and limitations etc, I drew up a table of total waveform time (time per division x10) from 50ns to 50,000s and noted down the maximum possible number of samples for 1, 2, 3 and 4 channels, as indicated in the Properties column. Also included was the fastest possible sample rate, sample interval, and sample interval as a % of the waveform.

The conclusion I came to is that, with a waveform total time of between

1.

**50ns to 200ms**, the maximum possible sample rate is applied (400 MS/s on a single channel). As a result, the sample interval as a percentage of the waveform gets bigger as the timebase gets faster (so at 5 ns/div the sample interval would be 50% of a division with a single channel and 100% with 2 channels, that is 2 samples/div on one channel and one sample/div on 2, 3 or 4 channels)).

2.

**500ms to 50,000s**, the sample interval as a percantage of the waveform length is fairly constant (~0.00001% of a division), with the sample rate increasing accordingly as the timebase gets faster, until the the limit of 400 MS/s is reached (single channel at 20ms/div or 200ms total waveform time).

**The maximum number of samples I see is 100M**(single channel, 500ms to 50,000s total waveform time). However, the maximum possible number of channels indicated in PicoScope 6 Automotive software is 2GS - yes, it does say it will try to capture that many samples and the actual number might be less - but I see a maximum possible number of samples that is 20 times less that the maximum indicated by the software.

**So under what conditions, then, might it be possible to capture beyond 100M samples and up to 2G samples?**

Any other thoughts/observations would be much appreciated.

Martin