定价： 0元

定价： 0元

This recommended practice describes the conduct and analysis of precision tests that are to be performed on linear accelerometers using centrifuge techniques. The term "precision," in this context, refers to tests that are conducted to evaluate accelerometer parameters, as opposed to tests conducted to establish environmental survivability only. Evaluation may take the form of determining the coefficients of the accelerometer's model equation, except for bias and scale factor, which are most… read more accurately determined by static multiposition tests. Alternatively, evaluation may establish only that the accelerometer output complies with specific error limit criteria. read less

定价： 172元 / 折扣价： 147 元

定价： 53元 / 折扣价： 46 元

定价： 0元

定价： 113元 / 折扣价： 97 元

定价： 92元 / 折扣价： 79 元

This standard describes methods for measuring the linear waveform distortions of TV video signals, that is, distortions which are caused by amplitude-independent (linear) transmission characteristics of television equipment and facilities.1 The primary application of this standard is for routine operational and maintenance tests, where rapid interpretation of test results is desirable. The techniques described here may also be applicable to laboratory measurements, proof-of-performance… read more measurements, and detailed maintenance procedures. read less

定价： 65元 / 折扣价： 56 元

The specification and test requirements for a linear, single-axis, nongyroscopic accelerometer for use in inertial navigation, guidance, and leveling systems are defined. A standard specification format guide and a compilation of recommended test procedures for such accelerometers are provided. Informative annexes are given on the various types of such accelerometers (force or pendulous torque rebalance with analog or digital output, vibrating beam, and micromechanical) and error effects, on… read more filtering, noise, and transient analysis techniques, and on calibration and modeling techniques (multipoint tumble analysis, vibration and shock test analyses, and geophysical effects in inertial instrument testing). read less

定价： 208元 / 折扣价： 177 元

This guide identifies the mechanisms and analytical approach for ac interference effects on conductive linear facilities due to the operation of co-located electric transmission lines. The common mechanisms for ac interference, including magnetic inductive coupling, capacitive coupling, and conductive voltage transfer through soil are discussed. Included are general guidelines and considerations for performing detailed ac interference analyses, with sections specific to the analysis of co-… read more located pipeline and railroad facilities. This guide does not dictate specific compliance limits, direct when an ac interference analysis must be performed, or cover other issues that may need to be considered in joint-use corridors, such as effects due to lightning striking the line or dc corrosion on structures. read less

定价： 73元 / 折扣价： 63 元

This specification defines the requirements and test procedures for a digital accelerometer which utilizes a linear, single-axis, nongyroscopic acceleration sensor with a permanent magnet torquer (forcer) operated in a [ternary pulse mode, pulse-width modulation mode, analog mode with voltage to frequency converter, …]. The electronics are considered to be part of the accelerometer which produces a digital output proportional to sensed velocity changes. The digital accelerometer is hereafter… read more referred to as the accelerometer. With appropriate modifications, this specification may also be applied to force balance nonpendulous accelerometers. read less

定价： 141元 / 折扣价： 120 元