For many sensor calibration measurement scenarios, it would be useful to be able to vary the wavegen output level in a custom way. In particular, measurements taken over a broad range of swept frequencies on dynamic systems that have a high Q can result in very large dynamic ranges. One way to achieve somewhat clean results is to separate the full measurement band into smaller frequency sweep ranges at a different sweep levels and recombine the frequency responses. If there's an easy way to take a baseline measurement, and use the inverse frequency response to excite the system, then the output should be much more stable (ideally flat spectrum level) for more optimum acquisition. Then just subtract the custom generator levels from the output data to get the true response. For example, a peak level in the baseline output response will result in a low generator level at that frequency. What's the best way to implement such an inverse compensation [filter]? When I tried to import a Custom file of frequency response data, the GUI interprets the frequency points as a time series. Thanks.