IEEE 743 INT 1-2001 en Standard Equipment Requirements and Measurement Techniques for Analog Transmission Parameters for Telecommunications《IEEE Std 743-1995用IE.pdf

1、IEEE Std 743-1995_InterpretationIEEE Standards Interpretation for IEEE Std 743-1995Copyright 2001 by the Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue New York, New York 10016-5997 USA All Rights Reserved.This is an interpretation of IEEE Std 743-1995. Interpretations are iss

2、ued to explain and clarify the intent of a standard and are not intended to constitute an alteration to the original standard or to supply consulting information. Permission is hereby granted to download and print one copy of this document. Individuals seeking permission to reproduce and/or distribu

3、te this document in its entirety or portions of this document must contact the IEEE Standard Department for the appropriate license. Use of the information contained in this document is at your own risk.IEEE Standards Department Copyrights and Permissions 445 Hoes Lane, P. O. Box 1331 Piscataway, Ne

4、w Jersey 08855-1331, USAAugust 20, 2001 SH 94405Interpretation Number: 1 Topic: Clerical error in the tabulation of loss vs. frequency for the D Filter. Relevant Clause: 9.1 D Filter Relevant Figure: Figure 17 Relevant Table: Table 30 Interpretation requestIn Figure 17 on page 83 of IEEE Std 743-199

5、5, a tabulation of loss vs. frequency for the D Filter is given. At the bottom of page 85, a chart (Table 30) of pole/zero values for the same filter is given. The problem is that, in the 300-700 Hz Region, the loss calculated using the pole/zero data does not comply with the loss given in Table 30

6、in the third row in the column labeled “Z-plane poles.“ http:/standards.ieee.org/reading/ieee/interp/743-1995.html (1 of 2) 2009/01/06 7:25:14 PMIEEE Std 743-1995_InterpretationInterpretation for IEEE Std IEEE Std 743-1995 There is an apparent clerical error in Table 30 of IEEE Std 743-1995. The sou

7、rce document specifying the digital poles and zeros, “Contribution IEEE P743/94-47,“ shows the components on the third lline of the “z-planes poles“ column, to be 0.7258+/-j0.1629, and thus the real component number in the IEEE Std 743-1995 (0.7528) is apparently in error.Copyright 2001 IEEE. All rights reserved.Back to Available IEEE Standards Interpretations Online Copyright IEEE-SA Contact IEEE-SA For questions or comments, please contact the IEEE-SA Webmaster. http:/standards.ieee.org/reading/ieee/interp/743-1995.html (2 of 2) 2009/01/06 7:25:14 PM