cDAQ synchronization cDAQ-9185 and cDAQ-9189

[jharris66]

Hello,

I am a little confused on what exactly TSN provides for cDAQ-9185/9189 chassis.

One thing we are looking to do is sample an analog channel in a NI-9209 module in a cDAQ-9189 chassis when the digital input of a NI-9401 goes low to high in a cDAQ-9185 chassis.

Does TSN provide signaling like this via ethernet/TSN or must physical lines be connected between two chassis for this particular example?

Thanks,

[ZYOng]

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@jharris66 wrote:

Hello,

I am a little confused on what exactly TSN provides for cDAQ-9185/9189 chassis.

One thing we are looking to do is sample an analog channel in a NI-9209 module in a cDAQ-9189 chassis when the digital input of a NI-9401 goes low to high in a cDAQ-9185 chassis.

Does TSN provide signaling like this via ethernet/TSN or must physical lines be connected between two chassis for this particular example?

Thanks,

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Short answer, no. Physical lines are not required between chassis. Time start trigger is used. Synchronization is done via TSN (IEEE 802.11as).

Long answer, see How to Achieve High-Accuracy Measurements With NI-DAQmx-Based TSN Devices

[mcduff]

One other consideration, you would need to use a LabVIEW Linux RT controller for your system. TSN is not supported on Windows.