Abstract: A method and apparatus are provided for implementing automatic-calibration of a Time Domain Reflectometer (TDR) probing apparatus. A calibration procedure is performed automatically each time a TDR probe is moved from a device under test (DUT). A current calibration TDR waveform is obtained and compared with a reference calibration TDR waveform, checking for deviations between the current and reference measurements. If a deviation is detected, then the user is notified and calibration is failed.

Abstract: A method and apparatus are provided for implementing automatic-calibration of a Time Domain Reflectometer (TDR) probing apparatus. A calibration procedure is performed automatically each time a TDR probe is moved from a device under test (DUT). A current calibration TDR waveform is obtained and compared with a reference calibration TDR waveform, checking for deviations between the current and reference measurements. If a deviation is detected, then the user is notified and calibration is failed.

Abstract: A modular heat sink decoupling capacitor array includes a plurality of modules, each defining parallel distributed decoupling plates, and each module forming a heat sink fi. Each module includes multiple spaced apart contacts for providing low inductance connections with an associated device. A power distribution interposer module is attached to a heat sink surface of the modular decoupling capacitor. The interposer module is used for implementing power delivery without using valuable ball grid array (BGA) connections and printed circuit board (PCB) layers.

Abstract: A method and apparatus are provided for implementing very high density signal probing of a printed circuit board having a pad pattern connected to signals of interest. A metal plate includes a plurality of through holes arranged in a predefined pattern that corresponds to the pad pattern on the printed circuit board. At least one signal module is inserted within a selected one of the through holes of the metal plate. Each signal module defines a coaxial connector for electrical mating engagement with a coaxial cable connector and has an embedded resistor. At least one power/ground module is inserted within a selected one of the through holes. Each power/ground module contains a high dielectric constant material between an outer conductor and a center conductor defining a capacitor. The capacitor provides a low impedance path between the metal plate and a power or ground pad of the printed circuit board.