ANSI/SCTE 16 2001R2007

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NOTICE The Society of Cable Telecommunications Engineers (SCTE) Standards are intended to serve the public interest by providing specifications, test methods and procedures that promote uniformity of product, interchangeability and ultimately the long term reliability of broadband communications facilities. These documents shall not in any way preclude any member or nonmember of SCTE from manufacturing or selling products not conforming to such documents, nor shall the existence of such standards preclude their voluntary use by those other than SCTE members, whether used domestically or internationally. SCTE assumes no obligations or liability whatsoever to any party who may adopt the Standards. Such adopting party assumes all risks associated with adoption of these Standards or Recommended Practices, and accepts full responsibility for any damage and/or claims arising from the adoption of such Standards or Recommended Practices. Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. SCTE shall not be responsible for identifying patents for which a license may be required or for conducting inquires into the legal validity or scope of those patents that are brought to its attention. Patent holders who believe that they hold patents which are essential to the implementation of this standard have been requested to provide information about those patents and any related licensing terms and conditions. Any such declarations made before or after publication of this document are available on the SCTE web site at http://www.scte.org. All Rights Reserved © Society of Cable Telecommunications Engineers, Inc. 2001, 2007 140 Philips Road Exton, PA 19341 i
Table of Contents 1.0 Scope 1 2.0 Definitions 1 3.0 Background 1 4.0 Equipment 2 5.0 Setup 3 6.0 1 dB Delta Measurement Procedure 6 7.0 Differential Voltage Measurement Procedure 7 Figure 1 Hum Modulation Test Setup 9 Appendix 1 Hum Modulation Derivation 10 Appendix 2 Derivation of the 100m VDC Delta Calibration 11 Appendix 3 Conversion of the Hum Modulation from dB to percent (%) 12 Table 1 Hum Modulation Conversion Chart 13 Appendix 4 Time Domain vs. Frequency Domain Measurements 14 Appendix 5 Hum Modulation Test Methods 15 Appendix 6 Troubleshooting Guide 17 Appendix 7 Special Test Conditions/Considerations 18 ii
Page 1: ENGINEERING COMMITTEE Interface Pra
Page 5 and 6: 4.0 EQUIPMENT 4.1. The general equi
Page 7 and 8: 5.3. Set the oscilloscope to the fo
Page 9 and 10: Note: The mV p-p value must be divi
Page 11 and 12: 7.7 Set the oscilloscope to the fol
Page 13 and 14: Appendix 1 - Hum Modulation Derivat
Page 15 and 16: Appendix 3 - Conversion of Hum Modu
Page 17 and 18: Appendix 4 - Time domain vs. Freque
Page 19 and 20: The relationship of the peak to pea
Page 21: Appendix 7 - Special Test Condition

ANSI/SCTE 16 2001R2007

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