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Lavry DA2002 Operation Manual

Other manuals for DA2002: Operation Manual
Manual is about: High Resolution Digital to Analog Converter

Summary of DA2002

  • Page 1

    Model da2002 high resolution digital to analog converter operations manual.

  • Page 2

    Lavry engineering, inc. P.O. Box 4602 rolling bay, wa 98601 360-598-9757 http://www.Lavryengineering.Com e-mail:techsupport@lavryengineering.Com revision 1.7c december 7, 2011.

  • Page 3

    Da2002 introduction 1 welcome to the unique experience of listening to digital audio at its best! Only a privileged few have experienced the effortless manner in which the lavrygold da converter reproduces every nuance of the music, without the associated listening fatigue common to less accurate co...

  • Page 4: Overview

    Da2002 overview 2 overview the da2002 converts incoming 24 bit digital inputs to analog audio signals. The combination of excellent linearity, small quantization steps, fast and accurate response and low noise performance enables reproduction of the finest details. The da2002 accommodates standard s...

  • Page 5

    Da2002 table of contents 3 table of contents introduction 1 overview 2 part i- operating instructions input signal selection 5 input signal connection 5 analog outputs 6 analog output level 6 turn-on sequence 7 polarity inversion 7 pll mode and crystallock™ mode 8 power and fusing 8 maintenance 8 pa...

  • Page 6

    Da2002 table of contents 4.

  • Page 7: Input Signal Selection

    Da2002 operation 5 part i: operating instructions operation of the model da2002 digital to analog converter requires the use of two push button switches located on the front panel: polarity inverts the absolute polarity of the signal. Input select controls selection of digital inputs to the dac. Inp...

  • Page 8: Analog Outputs

    Da2002 operation 6 analog outputs the left output and right output xlr signals are factory set to provide balanced analog signals (signal between pin 2 and pin 3 of the xlr connectors). Operation in unbalanced mode (signal at pin 2 and ground at pin 3) is possible by changing the internal jumpers j8...

  • Page 9: Turn-On Sequence

    Da2002 operation 7 turn-on sequence when applying ac power to the unit, the following sequence of events takes place: 1. The unit goes into mute mode. 2. Warm-up: an internal oven heats up the temperature-sensitive devices to a set temperature. The warm-up time depends on the initial temperature and...

  • Page 10: Power and Fusing

    Da2002 operation 8 pll mode and crystallock™ mode the da2002 features a very low jitter pll mode that prevents jitter in the input digital audio signal from degrading da conversion quality. The pll mode is recommended for operation of the da2002 with inputs of 88.2 or 96 khz. The default setting is ...

  • Page 11: Oven Control

    Da2002 theory of operation 9 part ii: theory of operation the simplified block diagram (figure 1) shows the basic building blocks. Oven control the pcm dac is constructed of custom made laser trimmed thin film resistor networks; yet any resistor is subject to short term drift due to temperature vari...

  • Page 12: Timing And Deglitcher

    Da2002 theory of operation 10 the calibration process takes a long time because the node adjustment is interactive (adjusting a node causes some miss-adjustment at all the other nodes). A single calibration cycle consists of reading and adjusting of all the nodes. The processor repeats the calibrati...

  • Page 13: Jitter Removal

    Da2002 theory of operation 11 jitter removal ordinary phase lock loops circuits (pll's) do a reasonable job at removing high frequency jitter from the incoming clock. The same circuits perform very poorly in the removal of low frequency jitter from the clock signal. The need to keep enough bandwidth...

  • Page 14: Part Iii: Specifications

    Da2002 specifications 12 part iii: specifications noise -110dbfs rms, -130dbfs peak spurious response distortion 1khz tone at -1dbfs: .0009%fs peak harmonic amplitude 1khz tone at -60dbfs: .00009%fs peak harmonic amplitude 10khz tone at -1dbfs: .0009%fs peak harmonic amplitude 10khz tone at -60dbfs:...

  • Page 15

    Da2002 warranty 13 limited warranty subject to the conditions set forth below, for one year after the original purchase date of the product, lavry engineering will repair the product free of charge in the united states in the event of a defect in materials or workmanship. Lavry engineering may excha...