Concurrent use of multiple "NI USB-6343 (BNC)" under MATLAB?

[tozz]

Hi community

I'm new here - I'm hopefully not violating any rules...

I'm using a "NI USB-6343 (BNC)" under MATLAB (using Data Acquisition Toolbox) and I'm running out of channels. Can I simply purchase another "NI USB-6343 (BNC)", plug it in to another USB-port and this way expand the number of available channels (16 --> 32 differential or 32 --> 64 single-ended)? If so, what's the upper limit of DAQ-devices which I can use simultaneously? Would the same work using an USB-hub (sharing the available bandwidth), or are distinct USB ports a mandatory prerequisite?

Thanks in advance!

[santo_13 · Accepted solution]

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@tozz wrote:

Hi community

I'm new here - I'm hopefully not violating any rules...

I'm using a "NI USB-6343 (BNC)" under MATLAB (using Data Acquisition Toolbox) and I'm running out of channels. Can I simply purchase another "NI USB-6343 (BNC)", plug it in to another USB-port and this way expand the number of available channels (16 --> 32 differential or 32 --> 64 single-ended)? If so, what's the upper limit of DAQ-devices which I can use simultaneously? Would the same work using an USB-hub (sharing the available bandwidth), or are distinct USB ports a mandatory prerequisite?

Thanks in advance!

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Technically, NI DAQmx driver or DAQ do not limit you in terms of number of DAQs that can be connected to a computer (you may need to adopt some hardware synchronization across multiple USB DAQs).

Yes, USB Hub's bandwidth will be a limiting factor in the throughput.

Unfortunately, I couldn't comment if MATLAB implemented the Data Acquisition Toolbox to support multiple instances of DAQ access.