Performing strain gage shunts on more than on SCXI-1520 module

[Mark Jones]

I am developing an application to apply the SCXI-1314 shunt resistors to 250 strain gages for calibration. I used the SCXI-1520 Strain.vi found in the examples sections of Labview as the foundation of my program. I can not use MAX because I use custom strain gage VIs that convert the input voltage into strain.
My problem is that I can apply the shunt to one SCXI-1520 module only (I found this to be the case even using the SCXI-1520 Strain.vi). How can I apply the shunt resistors to all 250 gages at once?

[Arun_V]

Hello Mark,

How many modules are you using? Have you been able to test with more than one module? If I understand your question right, you want to know how to modify the VI. Please let me know.Thanks.

-Arun V

[Mark Jones]

Thank you for your response. I am using 34 SCXI-1520 modules. The problem is that I can only shunt the gages in first module using either the SCXI 1520 Strain.vi supplied with Labview 6.1 or my program. All of my research in the SCXI-1520 manual (Dec 03 version) and the NI website does not explicitly discuss using multiple modules. I want to know ifshunting multiple modules is possible (as it was with the SCXI-1121), and if so how do I do it.

[Rexbo]

I am using shunt cal with multiple SCXI-1520 modules, however, the virtual channels are setup via max. I have not used shunt cal for multiple modules with physical addresses.

Since all the physical channels are the same for each module, maybe you need to run it through a for loop that is auto indexed to a module array.