STANDARDS FOR WAVEFORM METROLOGY BASED ON DIGITAL TECHNIQUES (CLASSIC REPRINT)

Excerpt from Standards for Waveform Metrology Based on Digital TechniquesFigure 3 shows a simplified diagram of the nist test set for measuring the essential parameters of the static transfer characteristic of precision data converters. The basic operation involves a com parison of outputs of the test dac or adc with the corresponding levels from the nist dac 20. This multirange, 20-bit+sign, programmable voltage source exhibits less than 1 ppm linearity error and incorporates a self calibration feature The design is based on an R - 2r ladder network in the current steering mode, using miniature latching relays (to minimize thermal effects) with mercury wetted contacts for the switches. Ten buffered, temperature-controlled, unsaturated standard cells (providing direct linkage to the legal volt) com prise the voltage reference.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works._,