A Single Channel Data Logger

There comes a time when virtually every engineer would like to "log" how a parameter changes over time. The parameter could simply be volts, or a voltage from a transducer that is measuring temperature or pressure. The measurement rate is not high but the duration of the overall measurement could be very long as in hours, days, in fact weeks. This application uses an HP 3478a Multimeter interfaced to MATLAB with GPIB creating a flexible, albeit single channel, Data Logger with Moving Average filtering and Engineering Unit support.