Digilyzer DL1 User Manual

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Application hint: Measurement Functions Broadcast levels are limited to a maximum output peak level. This is in order to not to overload the transmission lines and to avoid unpleasant and audible distortions. During tuning through the radio stations it is clearly noticeable, that some channels are much louder than others; purposely to increase awareness! This is accomplished by using compressors and other dynamic signal processing devices. The intention is to make the material as loud as possible without exceeding the maximum peak level. Simply feed the digital audio signal into the <strong>Digilyzer</strong> and it displays for both channels the peak- and VU-levels. The closer the VU level is to the PPM level, the higher is the compression of the audio material. 40
Level Measurement The Level menu features three different measurement selections to choose from: • Level peak • Level RMS • Level sweep Level peak measurements indicate – thought digitally – the maximum number (value) of the input signal. Level RMS measures the power of the signal. The RMS functions of the <strong>Digilyzer</strong> such as Level RMS, sweep and THD+N are available as single channel functions only. Level sweep, based on RMS measurement. Application hint: Measurement Functions Fig 5-40, Level selection menu In digital audio the level peak measurement is basically mostly used, while in the analog area RMS values are important. Whenever you want to make measurements in the area of “frequency response”, RMS is usually the correct choice. 41
Page 1 and 2: Digilyzer DL1 User Manual
Page 3 and 4: INdex: 1. In t r o d u c t Io n 4 C
Page 5 and 6: egistration Introduction Register a
Page 7 and 8: Warnings In order to avoid any prob
Page 9 and 10: Functions Overview The Digilyzer fe
Page 11 and 12: • Some functions, e.g. SCOPE, are
Page 13 and 14: Connectors The Digilyzer includes t
Page 15 and 16: 3. FIrsT sTeps This chapter is a qu
Page 17 and 18: 8. Change auto power off time - Mov
Page 19 and 20: Menu Bar The menu bar allows the us
Page 21 and 22: setup screen Basic Operation The se
Page 23 and 24: display Basics Debugging and analyz
Page 25 and 26: Following errors are analyzed/visua
Page 27 and 28: 5. MeAsureMeNT FuNCTIoNs Channel St
Page 29 and 30: Row number Measurement Functions Pa
Page 31 and 32: Consistency Check The consistency c
Page 33 and 34: Bit statistic The bit statistic fun
Page 35 and 36: Logger The event logger records any
Page 37 and 38: Displaying events The display of th
Page 39: vu+ppM The Digilyzer offers a combi
Page 43 and 44: Level RMS The analog Level RMS func
Page 45 and 46: Level Sweep The Digilyzer supports
Page 47 and 48: THd+N The THD+N function (Total Har
Page 49 and 50: scope The scope shows the waveform
Page 51 and 52: 7. ACCessorIes MiniLINK MiniLINK al
Page 53 and 54: 8. AppeNdIx 1C2f Format The AES3 st
Page 55 and 56: Logger Event Coding The following c
Page 57 and 58: DL1 event Cs WordLeN Cs CHACHB Cs o
Page 59 and 60: Byte Bit Bit-info Digilyzer Explana
Page 61 and 62: Appendix Consumer Format Coding Ove
Page 63 and 64: Appendix Byte Bit Bit-info Digilyze
Page 65 and 66: Dimensions (L x W x H) 163 x 86 x 4

Digilyzer DL1 User Manual

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