Labview MSO not reading until re-plugging the header bundle.

[AKA]

 

After starting the VI MSO/1 reads correct output but MSO/2 is reading noise.

 

After I disconnect the header and reconnect it, the output fixed itself.

This same code works for AD2 but when I use AD3 I have to re-plug the header.

Edited April 18 by AKA

[AKA]

Hi @attila

I am using 20pin to 20pin jumper cable, so I had to reconnect all of them together. 

I just figured out the problem is the digital I/O. (I am controlling relay using source drive + DIO)

The reading is bad because only one channel of the relay switched.

My suspicion is the drive strength on AD3(default 4mA), where AD2 had 12mA as default.

**Is there any way to set DIO drive through LabView? 

 

 

Edited April 18 by AKA

[attila]

Hi @AKA

The DIO drive on AD2 is 4mA.
On AD3 is by default 4mA but can be adjusted with C API FDwfDigitalIODriveSet

[AKA]

Hi @attila

I manage to fix it by adding time delay between PWS power-on and DIO.

Not sure the problem is, but it has to do with power/IO timing.

Much appreciation for your help.

[attila]

Hi @AKA

What header are you reconnecting ?

[Tadashi199]

4 hours ago, AKA said:

Hi @attila

I manage to fix it by adding time delay between PWS power-on and DIO.

Not sure the problem is, but it has to do with power/IO timing.

Much appreciation for your help.

Thank you @AKA . I was having a similar problem myself but the delay fixed it ! 

 

Edit by JColvin: deleted the mass slew of duplicate posts. Uncertain of the cause.