The following table shows maximum aggregate sample rates for an i2x0 controller (i.e. i200, i230, i240) attached to an
i100 data acquisition box. To calculate the sample rate for each
channel, divide by the number of channels attached to a controller. For example,
if the maximum aggregate sample rate is 166Ksamples/sec/controller, and you digitize 4 channels,
then you could digitize each channel at 41Ks/sec/channel. Or, digitize two channels at 88K each.
One can attach up to four i240 controllers to a computer to increase total system throughput. For example,
four i240 controllers (where each is attached to a separate i100 box or i4xx card cage) can digitize 16 total channels
at 41Ks/sec/channel; or 32 channels at 20.5K each. In this example, each controller runs at 166Ks/sec/controller
and the entire system runs at 664Ks/sec/system.
For more details on working with multiple controllers, click here.
If you get a buffer overflow error #118 with the i240 controller, then click here.
For details on i4xx card maximum sample rates,
please see their datasheets (e.g. click
For details on maximum system sample rates with the i240 controller and i4xx cards, click
Setup: instruNet World 1.18.2, iNet-100 box, iNet-200 controller, Strip Chart, 30000
samples/scan, 100 scans, 1 sec/div hScale, 1point/pixel max plot, 10x10cm window, 2
instruNet devices, 4meter 4000 Mbps network, Binary Merge fileType, and fast switching.
Things that will decrease sample rate: longer cable, slower computer,
optical-isolator, digital filtering, plotting, display size, # of devices.