Keysight Technologies, Inc.

Steven Joseph Narciso

John H Guilford

Gidget A Cathcart

Bryan D Boswell

Gregory A Hill

Robert W Leiby

Joseph Eugene Mueller

An apparatus that moves stimulus data and response data between a memory and a device under test (DUT) over a plurality of data transfer banks. In a first mode the data transfer banks output the stimulus data to the DUT as respective independent banks of serial stimulus data channels, and write the response data into the memory responsive to data provided as respective independent banks of channels of serial data from the DUT. In a second mode the data transfer banks output the stimulus data to the DUT as a single bank of combined serial stimulus data channels, and write the response data into the memory responsive to the data provided as a combined single bank of channels of serial data from the DUT.

Multi-bank digital stimulus response in a single field programmable gate array

An apparatus for phase alignment of clock signals includes a sampling circuit that samples a first clock signal on edges of a reference clock signal and that samples the reference clock signal on edges of the first clock signal, to generate a phase signal indicative of relative phase between the first clock signal and the reference clock signal. An alignment control circuit generates a control signal responsive to the phase signal, the control signal setting a phase shift direction for the first clock signal. A phase shifter shifts a phase of the first clock signal in the phase shift direction responsive to the control signal to align the phase of the first clock signal with a phase of the reference clock signal.

Multiple synchronizable signal generators using a single field programmable gate array

A dynamic switch contact protection circuit and technique to protect a channel switch within an electrical system by limiting transients when the switch is turned on or turned off. The protection circuit comprises switching between a high resistance path and a low resistance path. The high resistance path comprises a resistor. A bypass switch is connected in parallel to the resistor to affect the low resistance path. The protection circuit can connect or disconnect switch cards to the electrical system enabling the creation of a larger switching structure. Disconnected switch cards within a switching structure preserves system bandwidth by limiting capacitive loading. Electing which switch to close last or open first can prolong the length of usage of the switches.

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Loveland, CO, United States of America

Steven Joseph Narciso