Need a property which tells whether the DIO channel is forcing voltage or current

[Manu1991]

Hi All,

As I mentioned ablove I am in seach of option to find whether the DIO channel is forcing current or voltage.

I am using PXI 6555  24 ch HSDIO, for ex: if I give channel 1 as an input I wanna know it it is forcing voltage or current.

the same option we have in SMU 

Same options I need for HSDIO. Please help me to get this

[GerdW]

Hi Manu,

what kind of circuit do you want to use with this HSDIO card?

Once you have set the High/Low voltage levels you should KNOW the driving currents for each logic state from the schematics drawing of your logic circuit!

The PXI6555 can drive upto 32mA per PIN (according to specs), but that doesn't mean you get the same voltage level for the whole current range of 0…32mA. Just read the specs on rated impedance…

[Manu1991]

Hi GerdW,

Thanks for the reply.

I am using few DIO channels in PPMU,

In SMUs we have an option to configure in current mode or volatge mode  and we have a property node to get know which mode we are using.

In HSDIO also we have an option to set voltage or current . and we dont have an option to get to know, which we are forcing voltage or current, How do we get to know?

and how do I get the channel is enabled or disabled ?

Please see the above image , this is my requirement. please suggest me a way to get this done.

thanks in advance.

[GerdW]

Hi Manu,

In HSDIO also we have an option to set voltage or current .

You have an option to define voltage levels for HIGH, LOW and TriState. I don't see any option to set "currents", these are still only DIO terminals!

we dont have an option to get to know, which we are forcing voltage or current,

These are still DIO terminals so you know which state they are. Either by setting them (when using them as DO) or bei reading them (when used as DI)…

how do I get the channel is enabled or disabled ?

What is a "disabled" DIO terminal? Do you refer to "TriState"?

Anyway: as these are DIO terminals you just set or read the current state…

[Manu1991]

Hi GerdW,

As I said we are using HSDIO in PPMU.

We have option to Source voltage or curent.

[GerdW]

Hi Manasa,

and there are two functions to measure voltage or current. What else do you need?

I guess the hardware comes with a driver (PPMU) and this driver also installs example VIs to be found in the example finder. Did you check them?

[Manu1991]

gerdw,

Myrequirement is if I give channel number I should get that channel is configured to source volatge or source current 

[GerdW]

Hi Manasa,

Myrequirement is if I give channel number I should get that channel is configured to source volatge or source current 

As your program is initializing those channels at startup you should know how they are configured!?

So why do you want to read this from the device?

[Manu1991]

I am developing a tool that is capable of get all info about the instruments we are using. like HSDIO, SMU etc

We can say it is like an acknowlegdement from an instrument. 

[GerdW]

Hi Manasa,

have the routine, which initializes the HSDIO, save their settings to a file and read this file!

Or try to read the task settings - when there are property nodes available to get the task settings…