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MUX the DUT Signals


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#1 Grey

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Posted 05 March 2012 - 07:20 AM

Hi,

I have a DMM for measuring the DUT's different voltages.

My DUT has multiple voltages so i need to measure all in single DMM.

Can anybody give me link or let me know how i can MUX all my DUT signals so that the DMM will measure one at a time sequentially. \

Accordingly i will acquire the measured value through GPIB.

Is any cheap readymade MUX card available (Non NI product also OK) share with me.

I never tried this before,, so any tutorial link also highly recommended.


Thanks.

#2 crelf

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Posted 05 March 2012 - 02:46 PM

Rather than a MUX, I'd suggest you take a look at a switch matrix - if you're doing 2-point measurements (ie: only using the +ve and -ve probes of your DMM) then you need a 2xN matrix, where N is the number of test points. Then, depending on what your development environment is (LabVIEW vs TestStand), you can set up switch routes in Swtich Executive and switch as needed.

PS: you mentioned non-NI cards: while I try to use NI cards where I can, if there's something outside of their range that I need to do, I choose a card that is IVI-Switch compatible, so I can still use NI Switch Executive. eg: Pickering.

crelf

 

 

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#3 Grey

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Posted 06 March 2012 - 05:22 AM

Hi crelf,


Thanks for your suggestion!