Abstract: A digital storage oscilloscope is capable of responding to its usual assortment of analog trigger signals and is also responsive in real time to an event detection signal provided by a processor unit having an input coupled for receiving a data stream from an A/D converter. The processor unit examines the streaming digital samples of a signal under test in real time for the occurrence of a predetermined event. Upon detection of one of the predetermined events, a frame of data surrounding the event is captured for waveform processing and display. Multiple waveforms can be displayed simultaneously, each being captured in response to a detection of a user-defined anomalous event. A screen display can be programmed to display a different kind of event such as Runt signal, Overshoot, or Pulsewidth Violation in each waveform, or to display multiple occurrences of the same kind of event such as Runt signal in each waveform.

Abstract: A multiple chip module (MCM) for use with baseband, RF, or IF applications includes a number of active circuit chips having a plurality of different functions. The active circuit chips are mounted on a substrate that is configured to provide an integrated subsystem in a single MCM package. The MCM includes a number of features that enable it to meet electrical performance, high-volume manufacturing, and low-cost requirements. The MCM may incorporate split ground planes to achieve electronic shielding and isolation, vias configured as both thermal sinks and grounding connections, and specifically configured die attach pads and exposed ground conductor pads.