By Y. C. Fung (auth.), Alan M. Nahum, John W. Melvin (eds.)

ISBN-10: 1475722648

ISBN-13: 9781475722642

ISBN-10: 1475722664

ISBN-13: 9781475722666

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If the band is very narrow it is referred to as a notch filter. The most prevalent implementation of this is the 60-Hz notch filter. Postprocessing of sampled data often involves digital filtering. There are recursive and nonrecursive filters, phase and phaseless filters, and finite and infinite impulse response filters. Although considered part of a data channel, these are data processing algorithms, and not actual instrumentation. Therefore they are left undiscussed. Instrumentation for Impact Test-SAE 1211 10 The SAE J211 specification is designed to provide uniform guidelines for the conditioning, acquisition, and processing of data.

Frequently, a compromise is necessary. Systems are able to perform well using only four conductors and a shield. Bundles of cables serving multiple channels may be wrapped within a sleeve made of very strong material such as Kevlar to reduce the amount of jacket required for each individual cable. Warren N. Hardy When using a great length of cable (l,OOOft) between a bridge transducer and signalconditioning electronics, or when attempting to provide an ideal cabling environment, the conductor configuration can become complex (Fig.

Therefore, many systems have the ability to monitor (sense) and regulate voltage at a remote point. The sense leads serve this monitoring function. Ideally, no current flows through these wires. The positive and negative output leads return the signal from the bridge to noninverting and inverting inputs of the amplifier. Separate calibration lines are provided so that there is equal shunting of all gages and/or resistors. This scheme assures that any drop in potential along the excitation lines is not involved in the shunting process, and that cable resistances have a balanced effect.

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Accidental Injury: Biomechanics and Prevention by Y. C. Fung (auth.), Alan M. Nahum, John W. Melvin (eds.)


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