Abstract:
A method of compensating a calibration for a vector network analyzer [VNA] includes performing calibrations on at least a pair of por [El. E2 E3.E4] to determine error terms associated with each port [E1.E2.E3 E4] wherein at least one of the error term is based upon selecting the reactacne of the load standard from a set of potential values in a manner such that the reference reactance errors are reduced
Abstract:
An axial movement linear gauge includes a support and protection structure (21) that defines a longitudinal axis, a spindle (11) movable along the longitudinal axis with an external surface on which a longitudinal groove (12) is achieved, a feeler (14), a position transducer (32), a thrust device (36) for thrusting the spindle with respect to the support and protection structure, guide devices (22) for guiding movements of the spindle along the longitudinal axis with respect to the support and protection structure, and an antirotation system for preventing rotations of the spindle about the longitudinal axis that includes antirotation elements (50,51), stationary with respect to the support and protection structure, cooperating with the longitudinal groove. The guide devices can be integrally embodied with a locking element that cooperates with the support and protection structure for defining an operative position of the guide devices with respect to the support and protection structure.
Abstract:
A Biometric quality control (QC) process application is configured to monitor bias and imprecision for each test, characterize patient population data distributions and compare, contrast, and correlate changes in patient data distributions to any change in QC data populations. The Biometric QC process monitors the analytical process using data collected from repetitive testing of quality control materials and patient data (test results). The Biometric QC process identifies the optimal combination of, for example, frequency of QC testing, number of QCs tested, and QC rules applied in order to minimize the expected number of unacceptable patient results produced due to any out-of-control error condition that might occur.
Abstract:
Methods, systems, and storage media for monitoring a gauge are disclosed herein. In an embodiment, an image processing module may receive a digital image of a gauge to identify an analog value indicator of the gauge and to form an indicator representation corresponding to the analog value indicator. A geometric analysis module may determine from the indicator representation a geometric characteristic corresponding to the analog value indicator and an indicated gauge value. Other embodiments may be disclosed and/or claimed.
Abstract:
Es wird eine Messvorrichtung (1) für eine Werkzeugmaschine vorgestellt, wobei die Messvorrichtung (1) eine Erfassungseinrichtung (2) und mindestens zwei Messtaster (3, 4) umfasst. Die Erfassungseinrichtung (2) und die Messtaster (3, 4) sind für eine kabellose Signalübertragung zumindest von jedem der Messtaster (3, 4) an die Erfassungseinrichtung (2) ausgebildet. Die Erfindung zeichnet sich dadurch aus, dass an der Erfassungseinrichtung (2) Empfangsparameter vorgegeben sind, wobei die Empfangsparameter zur Vorgabe einer Folge von nicht überlappenden Zeitabschnitten (31, 32, 35, 36, 37) vorgesehen sind, in der jedem Zeitabschnitt (31, 32, 35, 36, 37) genau einer der Messtaster (3, 4) derart zugeordnet ist, dass ein in einem der Zeitabschnitte (31, 32, 35, 36, 37) empfangenes Signal dem Messtaster (3, 4) des jeweiligen Zeitabschnitts (31, 32, 35, 36, 37) zugewiesen wird. Zudem ist jeder der Messtaster (3, 4) mit einer Elektronikeinheit ausgestattet, an der Sendeparameter vorgegeben oder einstellbar sind, mit denen die Elektronikeinheit ein Senden von Messwerten nur in solchen Zeitabschnitten (31, 32, 35, 36, 37) zulässt, die einer Teilfolge der Folge von Zeitabschnitten (31, 32, 35, 36, 37) zugeordnet sind, deren Zeitabschnitte (31, 32, 35, 36, 37) dem jeweiligen Messtaster (3, 4) zugeordnet sind. Dabei sind die Elektronikeinheiten der Messtaster (3, 4) zur Erfassung eines Synchronisationssignals ausgebildet, mit dem in jeder Elektronikeinheit die Teilfolge von Zeitabschnitten (31, 32, 35, 36, 37), in denen der jeweilige Messtaster (3, 4) sendet, auf die Folge von Zeitabschnitten, in denen die Erfassungseinrichtung (2) empfängt, abgestimmt wird.
Abstract:
Disclosed is an adjustable holding device (1) for a dial gauge (25). Said holding device comprises a base (2) for precisely adjusting a dial gauge (25). One end of the base (2) is fitted with a connecting part (3) via which the base (2) can be joined to a stand or similar while a second end of the base (2) is provided with a receiving part (4) for the dial gauge (25). The base (2) is composed of two parallel webs (61, 62) and a cantilever (7) which is disposed between the webs (61, 62) and extends into the base (2). The webs (61, 62) and the cantilever (7) are fixed to the connecting part (3) while the adjusting screw (9) is guided through a bore (10, 33) in the upper web (61) and through a threaded bore (11, 31) located within the cantilever (7). The invention also relates to a method for producing such a base by means of an erosion machine.
Abstract:
The top-view profiles of repeating structures in a wafer are characterized and parameters to represent variations in the top- view profile of the repeating structures are selected. An optical metrology model is developed that includes the selected top-view profile parameters of the repeating structures. The optimized optical metrology model is used to generate simulated diffraction signals that are compared to measured diffraction signals.
Abstract:
A dial indicator that presents the position of a measuring probe (4) on a display (6) The measured value can be defined relative to a zeroing point and the dial indicator includes a zeroing initiator (3) used to initiate zeroing of the position. The dial indicator comprises furthermore a zeroing unit that, when the zeroing initiator is activated, delays the zeroing event until a time when the dial indicator is no longer disturbed by the activation of the zeroing initiator. The zeroing unit comprises a unit that receives data signals from the dial indicator about the position of the measuring probe, and that allow zeroing at the earliest when the probe has become dormant. The zeroing unit may also include one or both of a timer and a three dimensional motion sensor.
Abstract:
A test surface of a test object is measured with respect to a reference surface to generate a first relative surface measurement, where the test surface is in a first position relative to the reference surface. The test surface is measured with respect to the reference surface to generate a second relative surface measurement, where the test surface is in a second position relative to the reference surface different from the first position. Estimates of a rotationally varying part of a measurement of the test surface and a rotationally varying part of a measurement of the reference surface are provided. An estimate of a rotationally invariant part of the measurement of the test surface is calculated at a plurality of radial values based on a combination of the relative surface measurements, the provided estimates, and a difference between the first and second relative positions.