Browse Prior Art Database

Waveform Characteristics Measuring

IP.com Disclosure Number: IPCOM000095897D
Original Publication Date: 1964-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Chriatiansen, DR: AUTHOR [+3]

Abstract

The system effects automatic measurements of any of a large number of different characteristics of electric signal waveforms such as, e.g., rise time, fall time, peak-to-peak, etc.

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Waveform Characteristics Measuring

The system effects automatic measurements of any of a large number of different characteristics of electric signal waveforms such as, e.g., rise time, fall time, peak-to-peak, etc.

Test signals to be measured are entered into a measuring apparatus, such as a sampling bridge. Here an analog signal is obtained representative of the instantaneous magnitude of the test signal amplitude being measured at that time. The analog signal is converted to digital form by an A/D converter to enable processing by programmable digital comparator logic with storage of selected measurements. Among other things, the logic generates digital information which upon transformation via a D/A converter drives a sample pulse generator effecting sample rate and sample measurement position control. Thus, a plurality of selected amplitude measurements of a given pulse is taken and stored with appropriate time tags.

Calculation of relative characteristics, such as rise time or peak-to-peak measurements, can be accomplished at the same time by suitable programming of the logic. Output information is provided as to the results of either the measurements or calculations or both.

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