SpectraFoo User’s Guide SpectraFoo User's Guide Metric Halo $Revision: 1656 $ Publication date $Date: 2012-04-30 13:49:05 -0500 (Mon, 30 Apr 2012) $ Copyright © 2011 Metric Halo Table of Contents 1. Introduction ............................................................................................................................... 11 Congratulations! ..................................................................................................................... 11 About SpectraFoo Configurations ............................................................................................. 11 Introduction ............................................................................................................................ 11 System Requirements .............................................................................................................. 12 2. SpectraFoo Basics ....................................................................................................................... 14 Getting to know SpectraFoo .................................................................................................... 14 Common Features – Instruments .............................................................................................. 14 Common Features – Control Windows ..................................................................................... 15 The Real Time Rack ............................................................................................................... 16 Real Time Rack Consolidated View .................................................................................. 17 3. Instruments ................................................................................................................................. 18 SpectraFoo Standard ............................................................................................................... 18 SpectraFoo Complete .............................................................................................................. 18 Level Meter ............................................................................................................................ 19 Overview ....................................................................................................................... 19 User-Definable Over (Digital Clip) Counter ....................................................................... 20 Sum & Difference Meter Mode ........................................................................................ 21 Detailed Readout and Hold Indicator Controls .................................................................. 21 Options Window ............................................................................................................ 21 PPM ballistics ................................................................................................................. 23 Meter scales ................................................................................................................... 24 User selectable meter bar colors ...................................................................................... 24 Meter bar color transition levels ....................................................................................... 25 Spectragraph .......................................................................................................................... 25 Overview ....................................................................................................................... 25 Dual channel modes ....................................................................................................... 26 Sum, Multiply and Overlap modes ................................................................................... 27 Accumulation modes ...................................................................................................... 28 Physical unit calibration .................................................................................................. 29 Trace colors ................................................................................................................... 30 Octave Analysis .............................................................................................................. 30 Log and linear averaging ................................................................................................. 33 Spectral Snapshots, Overlays & Libraries ........................................................................... 33 Spectragram ........................................................................................................................... 38 Oscilloscope .......................................................................................................................... 41 Overview ....................................................................................................................... 41 Single and Dual channel modes ...................................................................................... 43 Trace display modes ....................................................................................................... 43 Selectable trigger channel ................................................................................................ 44 Power History ........................................................................................................................ 44 Envelope History .................................................................................................................... 44 Power Balance History ............................................................................................................ 45 Lissajous Phase Scope ............................................................................................................. 45 Vectorscope and X-Y modes ............................................................................................ 45 Stereo Position mode ...................................................................................................... 46 Adjustable sensitivity ....................................................................................................... 46 Auto-Sensitivity Mode ..................................................................................................... 47 Hi-Res Mode .................................................................................................................. 47 Phase Torch™ ........................................................................................................................ 47 Band Power History ................................................................................................................ 49 3 SpectraFoo User's Guide Timecode Clock ..................................................................................................................... 49 Correlation Meter ................................................................................................................... 49 Correlation History Meter ........................................................................................................ 50 Code Meter ............................................................................................................................ 51 Code Matrix Meter ................................................................................................................. 51 Code List Meter ...................................................................................................................... 52 THD Meter ............................................................................................................................ 53 4. The Transfer Function ................................................................................................................. 55 Overview ............................................................................................................................... 55 Transfer Function Controls ..................................................................................................... 58 Coherence .............................................................................................................................. 60 The Transfer Function Window ................................................................................................ 60 Understanding the Transfer Function ........................................................................................ 62 Interpreting the Data ............................................................................................................... 67 About the Response Curves ..................................................................................................... 70 Measuring System Response .................................................................................................... 71 System Correction ................................................................................................................... 73 Transfer Function Snapshot Overlays Reference ......................................................................... 73 Cursors in the Transfer Function window .................................................................................. 75 5. Controlling Audio and Instruments ............................................................................................... 76 Analyzer Control & Routing ...................................................................................................