Digilyzer DL1 User Manual

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Audio data: The two lines represent the 20 bit audio word for both channels. • LSB on the left side, least significant bit • MSB on the right side, most significant bit The right bits always have to be active. In case some of the left bits are constantly 0, the resolution of the audio signal is obviously less than the maximum of 24 bits (including the aux. bits). The number of arrows from right to left may be counted to find the actual word length or binary resolution. Application hints: Measurement Functions • Any digital input signal causes that some of the MSB’s are active. The Digilyzer counts the number of active bits and displays the result as actual word length. • Sometimes bits of the input signal are stucked on “0“ or “1“. In such a case a device in the signal chain is defective, e.g. a receiver or a transmitter. 34
Logger The event logger records any irregularity of the digital signals. Besides the common expectations events such as change of sampling frequency, word length, consistency check results and many more are covered. What is an event? Events are changes or irregularities of the input signal. They are acquired for the two channels separately (wherever reasonable) and are split into the following categories: • Carrier based events • Frame based events • Audio signal based events • Channel status based events • Consistency check based events Basics of logging Measurement Functions Whilst a log is running, the Digilyzer acquires all events (details are listed in the Appendix). The Digilyzer bundles all events which are occurred within the recording interval. It generates a new “record” when a recording interval has finished. The recording interval can be adjusted at the start of a new log. Basic setting of logger data Fig 5-20, Recording setup window 35 Record field Recording interval Calculated maximum recording length
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: Bit statistic The bit statistic fun
Page 37 and 38: Displaying events The display of th
Page 39 and 40: vu+ppM The Digilyzer offers a combi
Page 41 and 42: Level Measurement The Level menu fe
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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