Abstract: A test system and method which employs a filter bank to select different spectral components of a pulsed measurement signal. The filter bank utilizes filter nulls to suppress non-selected spectral components. After filtering the selected spectral components, the spectral components are combined to provide for a measurement signal which is analyzed to determine characteristics of a device being tested. The characteristics of the filters can be adjusted in response to a change in the characteristics of a pulsed signal applied to the device under test, so that the selected spectral components will correspond to desired spectral components generated by the pulsed signal applied to the device under test.

Abstract: A test system and methods using the test system correlate measurements of a device under test (DUT) regardless of which test fixture is used for in-fixture testing of the DUT. The test system includes test equipment, a test fixture that interfaces the DUT to the test equipment, a computer and a computer program executed by the computer. The computer program includes instructions that implement determining a port-specific difference array for test fixtures used with the test system. The difference array describes a difference between the test fixtures at a corresponding test port thereof. The method includes determining the difference array, measuring a performance of the DUT in a second test fixture, and applying the difference array such that the measured performance approximates a hypothetical DUT performance for the DUT as if mounted in a first test fixture.

Abstract: A receiver channel, test system and method employ adaptive nulling to filter a targeted frequency component from a pulsed signal to produce a filtered pulsed signal. The filtered pulsed signal facilitates measuring pulsed performance parameters of a device under test. The receiver channel includes an adaptive nulling filter having a frequency response with a null that is adjustable in a null location to correspond to a vicinity of the targeted component. The test system includes a pulsed signal source, a test set, and a controller that controls the signal source and the test set. The test set includes the receiver channel with the adaptive nulling filter. The method of adaptive null filtering includes adjusting a location of a null in a frequency response of the adaptive nulling filter to correspond to a vicinity of the targeted component to produce the filtered pulsed signal.