PXI based data acquisition system for SST-1 TF test program Varmora Pankaj1, Sharma A. N.1, Prasad U.1, Patel D.1, Doshi K.1, Khristi Y.1, Pradhan S.1 1Institute for Plasma Research, Bhat, Gandhinagar-382428, India. Abstract 3ST-1 TF coil test program required data acquisition system (DAQ) for continuous monitoring of different sensors mounted on the coil for measurement of different parameters like voltage, pressure, temperature, strain, flew etc. Main design derivers for the system were ease of channel expansion capability, variable high/siow sampling rate, high accuracy, flexible GUI based configuration with reliable data storage and time synchronization with other acquisition systems. A PXI based data acquisition has been developed on Labview platform having these features. In present system, two NI-6225 Multifunction DAQ cards have been used, one dedicated for acquiring temperature data and other for acquiring voltages. GPS based time synchronization system has been used in this system. Application program provides flexibility of viewing online numeric data of selected channels in user defined groups and also the possibility to view online plots of four different groups in single window. This facilitated easy operator based actions during the test campaigns. Individual input channels have possibility to define sampling rate, gain, offset, multiplication factor and identification name. This data acquisition system has been successfully used for more than twenty coil test in the coil test campaigns and other small laboratory scale experiments. Present paper gives details of this system, application program and its performance during the tests. Top Keywords PXI based system, Toroidal Field Coil, Tokamak, Labview, SST-1. Top |