Abstract: Disclosed is a method of correcting a response of an instrument. The method includes determining an inverse convolution function, the inverse convolution function being in the time domain. A response of an instrument to an exhaust sample is recorded as a function of time. The recorded response is then convolved with the inverse convolution function, the result being a convolution corrected instrument response.

Abstract: A wind turbine gearbox test cell includes a cradle and a base mounted to a first support structure. Load devices are interconnected between the cradle and base and are configured to input at least one of thrust, radial and yaw loads to the gearbox through the cradle to a wind turbine gearbox under test. A controller is in communication with the load devices and is programmed to command the load devices to input the at least one of thrust, radial and yaw loads to the gearbox corresponding to a simulated wind turbine gearbox loading event. The test cell includes dynamometers and gearboxes that can be reconfigured based upon the particular wind turbine gearbox under test.