buffer size in digital discovery

[mete]

I am using Digital Discovery with Waveforms SDK on Linux with acqmodeSingle1.

Querying the max buffer size returns 64 MB. Isnt the DDR3 on the device 256 MB ? Why does the Info call returns 64 MB ?

I set divider to 2, for 400 Msps sampling, and sample format to 8 bits. I set buffer to for example 1MB. When I call StatusRecord after acq is done, it returns number of available samples larger than 1M. If buffer is 1MB, if samples are 8 bits, how does it return 1M+ available samples ? lost and corrupt are zero.

Mete

 

[attila]

Hi @mete

It can capture 64Mi x32bit (sample format) @ up to 200MHz, 128Mi x16bit @ up to 400MHz or 256Mi x8bit @ up to 800MHz

[mete]

So the reported buffer size is in words units then ?

[attila]

Hi @mete

It can sample 32, 16 or 8 bits with the earlier mentioned limits.