Why Can’t I See the Applied Gain of an SCC Module in the Measurement and Automation Explorer Test Panel?Hardware: SCC
Problem: I expect a gain to automatically be applied to the signal connected to an analog input SCC module, but when I view a test panel in the Measurement and Automation Explorer (MAX), it doesn’t look like the gain has been applied. For example, if the signal connected to my SCC module has an amplitude of 13 mV and the module has a gain of 100, I expect to see a 1.3 V signal in MAX, but instead I still only see a 13 mV signal. Solution: This is the expected behavior if you have an analog input SCC module in the SC-2345 configured as an accessory for the DAQ board (Right Click on DAQ board » Properties » Accessory » Select SC-2345 » Configure » Select Analog Input Module and Location). The analog input SCC module applies the gain so that the range of the DAQ board's A/D converter can be better utilized. NI-DAQ automatically divides the sampled signal by the applied gain in order to simplify your programming. If you want to confirm that the gain is being applied, select "None" for the DAQ board accessory. Related Links: KnowledgeBase 2YAD6J5Z: Signal Coming From Strain Gauge Module Cuts Off At 100 mV Attachments:
Report Date: 06/14/2002 Last Updated: 05/05/2008 Document ID: 2MDI2SH5 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
