Sampler - Choose Channel

kvziegler

Hi All,

The core device driver for the sampler reads from channel 7-0 and it is unclear how to select the channel of interest from the sampler core code.. This is sorta annoying if for instance experiment 1 runs on channels 7-5, but experiment 2 runs on channels 3-4. I.e. there are different inputs that don't necessarily need to be acquiring data at the same time and perhaps a higher sampling rate would be beneficial by using fewer channels.

Is this an issue with the SPI interface or is there a straightforward way to handle this?

jbqubit

https://github.com/sinara-hw/Sampler/wiki#modes-of-operation

kvziegler

jbqubit

Thanks for this. However, I am not sure this answers my question even a little bit. This link is about sampling faster, my question is about choosing channels to measure and not measuring channels that aren't needed. I provided some justification for this but regardless I want control of the channels.

Also the documentation link is not clear. It describes EEM connectors to choose between fast and slow mode. However, its unclear if that is all that is required to configure for fast mode. We are using two EEM connectors on our sampler and are unable to sample fast. This isn't the limiting issue yet though.

I am also curious, if with the core or this "fast" mode of operation if we need to be concerned about the "timestamp" for different channels sampling. I.e. In the core mode is there a delay between channel readout and if so can we just correct by applying appropriately different sample lengths?

Thanks for the help.