Abstract: A diagnostic process includes analyzing vehicle data received from a vehicle to identify diagnostic data, and to determine an identity of the vehicle. A most likely fix is determined based on a combined assessment of the diagnostic data and the vehicle identity. A determination of a special function test to run on the vehicle is made based on the determined most likely fix. A signal is generated to run the special function test, and a determination of a pass or fail status is made based on the special function test. If no special function test is associated with the most likely fix, more targeted testing can be implemented through the use of a test box configured to monitor communications along communication pathways on the vehicle, and also to selectively activate/deactivate components on the vehicle.

Abstract: A vehicle diagnostic method is based on an analysis of communication signals on a vehicle having a plurality of electronic control units (ECUs). The vehicle diagnostic method includes transmitting an ECU status request signal to the vehicle and receiving a status response signal from the vehicle. The status response signal includes a first group of ECUs on the vehicle that have responded to the transmitted ECU status request signal. The method additionally includes receiving communication DTCs from the vehicle, with the communication DTCs being associated with a second group of ECUs. A primary probable cause ECU is identified by comparing the second group of ECUs to the first group of ECUs, the primary probable cause ECU being included in the second group of ECUs and not in the first group of ECUs.

Abstract: Systems and methods for a filtering wave energy using a rectangular-to-circular waveguide transition are discussed herein. An exemplary system comprises a rectangular-to-circular waveguide transition and a filter card. The rectangular-to-circular waveguide transition may include a front section and a back section opposite the front section, the rectangular-to-circular waveguide transition defining a circular hole extending from the front section of the rectangular-to-circular waveguide transition through the back section, the rectangular-to-circular waveguide transition further having a first arcuate region on the face of the transition, the first arcuate region defining a first cavity extending from the circular hole through the first arcuate region, the rectangular-to-circular waveguide transition also having a second arcuate region defining a second cavity opposite the first cavity, the second cavity extending from the circular hole through the second arcuate region.

Abstract: Systems and methods for a filtering wave energy using a rectangular-to-circular waveguide transition are discussed herein. An exemplary system comprises a rectangular-to-circular waveguide transition and a filter card. The rectangular-to-circular waveguide transition may include a front section and a back section opposite the front section, the rectangular-to-circular waveguide transition defining a circular hole extending from the front section of the rectangular-to-circular waveguide transition through the back section, the rectangular-to-circular waveguide transition further having a first arcuate region on the face of the transition, the first arcuate region defining a first cavity extending from the circular hole through the first arcuate region, the rectangular-to-circular waveguide transition also having a second arcuate region defining a second cavity opposite the first cavity, the second cavity extending from the circular hole through the second arcuate region.