Can I drive two inputs with one thermocouple

NI 9213, thermocouple card,
https://www.ni.com/docs/en-US/bundle/ni-9213-specs/page/specs.html
It has 79MΩ differential input impedance.
Is there any reason I can't drive two cards with one k type thermocouple?
Big mean angry guy says, "don't do it", I want to absolutely right before I hold my ground! I see it as a very low impedance driving two very high impedances.
                           Mikek

On Thu, 21 Dec 2023 14:23:11 -0800 (PST), Lamont Cranston
<amdx62@gmail.com> wrote:

>NI 9213, thermocouple card,
><https://www.ni.com/docs/en-US/bundle/ni-9213-specs/page/specs.html>
>It has 79M? differential input impedance.
>Is there any reason I can't drive two cards with one k type thermocouple?
>Big mean angry guy says, "don't do it", I want to absolutely right before I hold my ground! I see it as a very low impedance driving two very high impedances.
>                           Mikek

On impedance grounds, no problem with paralleling.  

But the NI cards may emit common-mode noise, and confuse one another.

I suppose one could put some filters in to handle that kind of
problem.

Joe Gwinn

On Thu, 21 Dec 2023 14:23:11 -0800 (PST), Lamont Cranston
<amdx62@gmail.com> wrote:

>NI 9213, thermocouple card,
><https://www.ni.com/docs/en-US/bundle/ni-9213-specs/page/specs.html>
>It has 79M? differential input impedance.
>Is there any reason I can't drive two cards with one k type thermocouple?
>Big mean angry guy says, "don't do it", I want to absolutely right before I hold my ground! I see it as a very low impedance driving two very high impedances.
>                           Mikek

On impedance grounds, no problem with paralleling.  

But the NI cards may emit common-mode noise, and confuse one another.

I suppose one could put some filters in to handle that kind of
problem.

Joe Gwinn