Stefen,
You can use any analog input example, as the channels are mapped directly to your AI channels on your 6020E.
To set a gain in LabVIEW, use the Input Limits parameter on AI Config.vi. Set the input limits to the smallest actual voltage range you expect from your strain gauge. NI-DAQ will set the highest possible gain to give you the best resolution.
To see the total gain applied to your signal (10 from SC-2043 * DAQ board gain), you can make a call to AI Hardware Config.vi and look at the Group Channel Settings output (see attached vi). (This low level vi is also buried inside AI Config.vi.)
Be sure to configure your board to have the SC-2043-SG in MAX, so that NI-DAQ will interpret in incoming signals correctly.
Nick Wilson
Application Engineer
Nation
al Instruments
www.ni.com/ask