Erro open agilent 34970a

[Teef]

The monitor function is actually close (attachment).

When I run it alone with the "animation button' I don't it indicates me OK whereas the front panel on my instrument agilent indicates error.

 You told me "You run the VI on the palette for checking an instrument error".

I don't see which palette you are talking about, can you explain me how to check my instrument ?

Thank you

[Teef]

The error is 305 :  Not able to perform requested operation
The requested operation is not valid for the specified channel. You may
have tried to a configure a channel for current measurements (valid
only on channels 21 and 22 on the 34901A module). Or you may have
tried to configure scaling on a module that does not connect to the
internal DMM

I saw that someone had the same problem in another subject and it's problem have been sold suddenly without he understand why.

You talked about NIMAX , my GPIB is recognized...

[Dennis_Knutson]

So what sort of card do you have in slot 3? Not all can be used for a monitor operation. After your reset, have you tried configuring the specific channel?

[Teef]

I use the same card than for thermocouples : "Agilent 34901A 20 channel multiplexer".

I put my card in the slot 2 and it's the same problem.

When you say configuring the specific channel, you mean with the instrument or with LV ?

[Dennis_Knutson]

Configure it with LabVIEW! As mentioned before, your code is resetting the instrument so any manual configuration is pointless.

[Teef]

I understand what you say.

How configure my channel ? I can't enter a constant at the pink exit "channel?"

[Dennis_Knutson · Accepted solution]

Immediately after the Initialize, add the function from the driver palette. I don't have the driver installed and though I used the instrument for several years, I don't remember the exact name of the configure function. Browse the palette with Context Help turned on and you should find it quickly enough. Going through the examples that come with the driver should also give you a clue.

[ben64 · Accepted solution]

The Initialize function also resets the mainframe and the cards so after you use this function you need to reconfigure the channels for the type of measurement you want to make. The easy way is to use the Conf EZ.vi from the Configure sub palette. If you need more control you can use the VIs from the Configure -> Advanced palette or better yet write the command directly using the VISA Write.vi (but this require a certain knowledge of SCPI command format and of the equipment commands, usually available from the user or programmer manual).

Ben64

[Teef]

oh kudos, you put me on the right way !

With the function conf EZ.vi I don't have the error message, and as you can see in attachment, the monitor indicates the true value : 8,13 .10^-3

I don't understand now why the indicator indicates "0,01" but i wil figure out that.

Thanks you !

[Dennis_Knutson · Accepted solution]

You just need to change the format of the indicator to show more decimal places.