Import auxiliary schemas for global element references. DOCSIS-SPECTRUM-MEASUREMENT-TYPE is an IPDR Service Definition schema defining the Enhanced Signal Quality Monitoring Spectrum Measurement Type IPDR data record which references the imported global elements. 3.5.1-A.1 Initial version. 3.5.1-A.2 Revised version includes ECN OSSIv3.0-N-10.0968-2 and published as I14. DOCSIS 3.0 Operations Support System Interface Specification CM-SP-OSSIv3.0-I14-110210, Annex J. Frequency Span is derived from the SpectrumAnalysisCfgBinSpacing and the length of the SpectrumAnalysisMeasurementBinAmplitude string divided by two (i.e., the Number of Bins).