Is high speed daq done on a compactrio comparable in terms of performance specifications to that done on a pci6071e?

[aetc]

I would like to perform continuous data aquisition, that I currently use a PCI6071E for, on Compact RIO. What are the similarities and differences in terms of DAQ capabilities and performance (resolution, settling times, ground reference issues, max input voltage range, channel gain, pre-/post gain errors, system noise, input impedance etc)?

[Christian_L]

Any comparison will depend on which CompactRIO module you choose. Currently for analog inputs you only have the 9215 module as a choice though.

The manual for the 6071 and 9215 will give you all the detailed specs and their differences, but here is a rough overview.

6071 manual

64SE/32Diff multiplexed input channels running at a sum sampling rate of ~1.25 MHz, 12 bit resolution, with a variety of gain settings to increase resolution in smaller voltage ranges.

9215 (one module) manual

4 Diff simultaneous iput channels, running at a maximum of 100 kHz (each
channel), with 16-bit resolution across a +-10V range, no gains. You can place up to 8 modules in one CompactRIO chassis to increase the number of channels.

One big difference will be how you process the data. With the 6071, data is transferred to the main processesor using DMA. Using CompactRIO you can use and process the data directly on the FPGA, or you can transfer it back to the RT processor on the CompactRIO controller to process the data in LabVIEW RT. The bandwidth of the data transfer from the FPGA to the RT processor is lower than a DMA transfer from the 6071, so you need to make sure that you can transfer the data fast enough for your application.

Christian L