Trouble changing gain setting on SCXI-1122

[DTI1]

Attempting to change module gain using MAX 3.0.1 or the SCXI_Set_Gain function of nidaq32.dll with LabVIEW 6.1 generally has no results. Occasionally a gain change through MAX is accepted if the SCXI Chassis is turned off and back on after the gain change is made. The SCXI-1122 module is in slot 1 of an SCXI-1000 chassis and is connected to a PCI-6031E card. Operating system is Windows XP. Any ideas as to what might be wrong?

[ShekharS]

Dear DTI1
Thank you for choosing National Instruments Support!

The SCXI 1122 does not allow you to choose the gain -- even though the documentation says "Programmatically Selectable". What this actually means is that when you specify a range to acquire, the NI-DAQmx driver will decide what gain to set.

You can however get access to this gain value by using property nodes. Hence, if your range is constant, the gain will remain the same, no matter where you try to change it.

Hope this helps!

Thanks and Regards
Shekhar S
National Instruments