How do I configure DAC for external voltage reference on PCI-MIO-16E-4 board with BNC-2090 connector block?

[deansieglaff]

My manual tells me that the DAC channels of the PCI-MIO-16E-4 are configurable for 0 to Vref operation, where Vref is an external voltage reference.  I have a BNC-2090 connector block that has the EXTREF connector.  When, in LabVIEW 6i, I attempt, through the AO vi's, to configure the DAC channel to respond to the external voltage signal, I am unsuccessful, and it still outputs from 0 to 10 V.  How do I make this system respond to that external voltage reference?

[Kimberly_Wenger_Austin]

Hi deansieglaff,

This example should show you how to use that external voltage reference with your application. Unfortunately, you will not be able to open the VI in LabVIEW 6i since it is created for LabVIEW 7.1, but you can look at the image of the block diagram for the property node that you are going to have to put into your VI.

Analog Output External Reference Voltage:  http://decibel.ni.com/content/docs/DOC-6436

I hope this helps!

Kim W.

[Dennis_Knutson]

DAQmx is not compatible with LabVIEW 6.

[Kimberly_Wenger_Austin]

I apologize! I forgot when DAQmx was created. My mistake.

Would this example be helpful for your application?

Using External Reference Voltages with E Series DAQ Boards

Thanks!

Kim W.