NI USB 9237 : external timing possible

[ThomasV]

Hi,

We want to duplicate a setup where a NI USB 9237 module to measure a load cell.

However in the new setup, we want to use an external timebase : We would like

to trigger the measurements with encoderpulses to measure position-based in stead of time based.

Do I need an extra digital I/O-USB module in a cDAQ-chassis, and select a digital input channel from this

module as the time base for the USB9237-measurement?

Are there alternatives?

Thx,

Thomas.

[nyc_(is_out_of_here)]

I don't see any external clock pin on the NI USB-9237 

http://forums.ni.com/t5/Multifunction-DAQ/Synchronising-USB-6009-and-USB-9237/td-p/3107237  may be helpful

[ThomasV]

Me neither 🙂

that's why I am asking if it is possible to use an input from another module as an external clock source.

[nyc_(is_out_of_here)]

It sounds like you'd need to do some sort of software synchronization as mentioned in that link I posted.

Hopefully the links provided by the NI Application Engineer will be helpful to you.

[ThomasV]

okay thx.