09-21-2019 05:43 AM
As far as I can tell there isn't a single board that does this. Is there a way to use two boards perhaps and how can I make sure they stay in sync with one another?
09-23-2019 08:57 AM
Hello roland1,
Would the USB 6255 work for your application needs? It has 80 single-ended analog input channels and has an aggregate sampling rate of 750 kS/s. Also, while this device does not have simultaneous sampling (due to sharing ADC among various channels), the acquisition can still be synchronized to a common clock and trigger.
If you would like to talk through any of these recommendations over the phone, please do not hesitate to contact some of our engineers at (888) 280-7645.
Best regards,
09-23-2019 09:02 AM - edited 09-23-2019 09:07 AM
Hello Roland,
If your are using PXI hardware, synchronization is build-in. You "just" have to identify the chassis type in MAX. PXI/PXIe chassis backplane include dedicated line to provide synchronization between different PXI/PXIe modules. See here for some information about the PXI architecture.
Using PCI hardware, RTSI cable will allow you to share clocks and triggers between multiple boards. It has the same kind of effect that PXI/PXIe chassis backblane (see also here).
For USB hardware, you may have to wire "externally" a clock (and perhaps a trigger) from one hardware to another.
Hope this helps...
PS : simultaneous answer with Ryan B. Note that 750kS/s (max agregate) divided by 48 channels is only 15.625kS/s per channel, instead of 32kS/s.
09-23-2019 10:14 AM
Thanks, I'm looking for PCI, voltage range 2V peak-to-peak with 1.25V DC bias, 16-bit res is fine. I don't know about the sync requirement. Ideally I have a single board, that's how synced it should be.