NI 63X5 DAQ devices are not simultaneous sampling. Input channels are multiplexed, and the multichannel sampling rate is aggregate over the number of configured channels.
This means for any 63X5 DAQ devices with more than one channel configured, the highest rate that you could sample any individual channel at would be 1MS/s divided by the number of configured channels.
So if you have configured 10 AI channels, then the highest sampling rate per channel would be 100 kS/s (1MS/s divided by 10).
If using all single-ended AI channels on the device, you should expect to see the following maximum rates per channel.
|Device||Number of Single-Ended|
|Maximum Sampling Rate|
|NI 6355||80||12.5 kS/s|
|NI 6365||144||6.944 kS/s|
|NI 6375||208||4.807 kS/s|