Abstract: A portable intermittent fault detector includes an enclosure that carries electronics and a display. The electronics are selected, arranged, and connected in a manner that minimizes noise, including noise that could interfere with an ability of the portable intermittent fault detector to detect intermittent faults in complex electrical systems. The portable intermittent fault detector also includes a passive heat management system hat conveys heat away from the electronics. In addition, a test module assembly of the portable intermittent fault detector includes an inner assembly with test module boards that are rigidly secured to one another and an outer support that carries the inner assembly in a manner that absorbs impacts and other forces on the portable intermittent fault detector.

Abstract: An apparatus for testing connections in a system has a plurality of inputs each adapted to couple to a test point in the system under test and a switching module. The switching module includes a first output selectively coupled to receive a first group of one or more of the inputs and a set of outputs corresponding in number to the plurality of inputs, each being selectively coupled to receive a corresponding one of the plurality of inputs. The apparatus may also include a meter coupled to the first switching module output and an array of nodes coupled to the set of switching module outputs, where each node couples a signal to a row sense line and a column sense line.

Abstract: An apparatus for testing connections in a system has a plurality of inputs each adapted to couple to a test point in the system under test and a switching module. The switching module includes a first output selectively coupled to receive a first group of one or more of the inputs and a set of outputs corresponding in number to the plurality of inputs, each being selectively coupled to receive a corresponding one of the plurality of inputs. The apparatus may also include a meter coupled to the first switching module output and an array of nodes coupled to the set of switching module outputs, where each node couples a signal to a row sense line and a column sense line.