Tektronix, Inc.

David A Sailor

Josiah A Bartlett

Julie A Campbell

Jay Schwichtenberg

James L Tallman

Karl A Rinder

Steven C Herring

Frederick Y Kawabata

Erik Teose

Alex J Barkume

A test-and-measurement probe () for a test-and-measurement instrument (), the test-and-measurement probe having a probe head () and a touchscreen user interface (). The probe head is configured to obtain a signal from a device under test. The touchscreen user interface is configured to visually convey test-and-measurement information to a user and to accept user touch input. In embodiments, the touchscreen user interface is removably connected to a compbox () of the test-and-measurement probe, through a wired connection or wirelessly.

Test and measurement probe having a touchscreen

Test and measurement probes include a body, an adjustable member moveably coupled to the body and having a changeable position relative to the body, and a transducer subsystem structured to measure the position of the adjustable member and configured to output a position signal indicative of the position of the adjustable member. A change in the position of the adjustable member causes a change in an electrical characteristic of the probe. A position-dependent correction factor may be used to correct the change in the electrical characteristic. Methods of compensating for a change in a response of a test and measurement system include monitoring a position sensor output to detect a position change of a first part of a probe relative to a second part, determining that the position sensor output value has crossed a boundary value between a first and second range, and applying a compensation factor corresponding to the second range to modify the response of the system.

Position sensing in a probe to modify transfer characteristics in a system

A portable general-purpose oscilloscope employs circuitry for receiving and converting serial digital video signals to composite and component analog signals via a digital to analog converter. The converted analog signals are applied to signal inputs of the oscilloscope for monitoring and display. Preferably, the oscilloscope is a digital phosphor oscilloscope. The oscilloscope control menus are arranged to control all of the usual functions of the oscilloscope and also to control the serial digital video circuitry. Apparatus is provided for storing data and waveforms. Circuitry is disclosed for deriving a trigger signal from a specific digital word of the serial digital bit stream. The trigger signal is applied to the trigger input terminal of the oscilloscope to allow the oscilloscope capture and display television waveform information around a unique occurrence of an event, as specified by the digital word. The serial digital to analog converter and decoder circuitry may be realized in a module that plugs into a receptacle in the oscilloscope. Separate modules may be provided for 601 video, HDTV signals, and DVB signals, and separate modules may be provided for NTSC, PAL, and SECAM television standards.

General purpose oscilloscope having digital television signal display capability

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Boring, OR, United States of America

David A Sailor