Nagra HD DAC Instruction Manual

D/a converter

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HD DAC – D/A converter
Instruction manual
P/N: 2055110151
All rights reserved – © 2016

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Summary of Contents for Nagra HD DAC

  • Page 1 HD DAC – D/A converter Instruction manual P/N: 2055110151 All rights reserved – © 2016...
  • Page 2: Table Of Contents

    USB set-up with computers ..............17 LED and Modulometer intensity adjustment ..........20 Removing the battery protection.............. 21 Remote control ..................22 Using a “universal remote” with the HD DAC ..........22 Burn-in period ..................23 Tube ageing ..................23 Case cleaning ..................23 Technical specifications ................
  • Page 3: Safety Warnings

    We guarantee our products against all manufacturing defects, for a period of three years for the HD DAC and six months for the tube, running from the date of delivery to the customer (validated by the serial number on the device casing and the invoice from an official Nagra dealer).
  • Page 4: Congratulations

    Congratulations! You have just acquired one of the best digital-to-analog converters ever built. The HD DAC was created by an engineering team with more than 60 years’ experience designing world-class products for the professional audio, national security and military businesses. The professional and Hi-Fi product ranges are designed by the same Research and Development department.
  • Page 5: Installation

    In order to avoid risks of fire and electric shock, the HD DAC should be used exclusively indoors. If possible, it is preferable not to place other HiFi elements on top of your HD DAC and free access to the ventilation holes, located under the device and on the top surface (above the tube), must be maintained at all times to allow sufficient natural cooling during operation.
  • Page 6: Connecting To A Nagra Mps

    Nagra MPS which was specifically designed to provide several independent power sources for different NAGRA Hi Fi elements. The MPS is connected to the HD DAC using LEMO to LEMO cables supplied with the MPS unit. The LEMO with the black Ring should be plugged into the MPS and...
  • Page 7 Digital, powers the digital part Note about the Ground connector This connection is seldom used but may solve specific setup issues concerning “hum”. Your Nagra dealer will assist you on when and how to use this connector. Nagra – HD DAC...
  • Page 8: Front Panel

    *In standby mode the power consumption is less than 100 mW. Please note that when turned ON, the HD DAC will go through a 2 minute pre- heating phase. This is in order to optimize the warming-up of tubes and critical components.
  • Page 9: Setting Your Hd Dac

    Setting your HD DAC Using the rotary controller knob along with the LCD display your HD DAC can be personalized to integrate it into your system. Please take a moment to learn more about the settings that you can change to enjoy your music more.
  • Page 10 REMOTE F NO REMOTE DEFAULT ASSIGN AUDIO SETTINGS LINE LEVEL HIGH LINE MODE VARIABLE DIRECT ABSOLUTE PHASE NORMAL INVERTED USB POWER MODE ALWAYS ON IF INPUT ACTIVE --- ABOUT --- SOFTWARE OPERATING TIME TUBE TIME DAC INFO Nagra – HD DAC...
  • Page 11 Naming of the digital inputs Each of the digital inputs of the HD DAC can be named by the user to identify different sources easily. 14 characters are available to name each of your digital inputs. Each name can include letters, numbers and special characters, which are presented in the following order: A…Z a…z _-*#/,.:;0123456789...
  • Page 12 NAGRA CDT disappear; showing you the name has been stored. Note If you wait for a few seconds without making any input, your selection will be cancelled and the menu closes automatically. Nagra – HD DAC...
  • Page 13 PRESS CTRL Input assignment The HD DAC features a wide array of inputs. You may not need all of them. To make input selection easier, you can decide which input you want to be active, and on which remote button it will be accessible.
  • Page 14: Audio Settings

    To change the level, press the Controller and select LOW or HIGH, then confirm by pressing once again the Controller. Line mode The HD DAC can operate as a pure D/A converted connected to an external preamplifier or integrated amplifier. In this case, you should have a fixed output level: DIRECT.
  • Page 15 This part of the menu will provide you with useful information about your HD DAC. ---- ABOUT ---- Software version You can check that your HD DAC comes with the latest SOFTWARE VERSION software version. Should we release a new software version, we will advise your dealer and also Announce it on our website.
  • Page 16 Whenever you change the 12 h 51 min tube, you can reset it. Normally the internal tube of the HD DAC should last for a minimum of 5’000 hours of normal operation Reseting the tube time counter...
  • Page 17: Usb Set-Up With Computers

    Due to the rapidly changing nature of the computer world, all computer related set-up information is to be found on the supplied USB key. The Nagra HD DAC is recognized as a playback device, no further software is required. Simply select the Nagra HD DAC device in the audio settings menu.
  • Page 18 The headphone amplifier output level can be adjusted, by the means of jumpers, to match the sensitivity of your headset. The settings to change your headphone amplifier are inside the HD DAC so your dealer should adjust it upon delivering of the unit.
  • Page 19 If you are in any doubt, please use the “Limited power output”. Also be careful of possible high level differences, when switching from the external output to the headphone output and vice versa. Nagra – HD DAC...
  • Page 20: Led And Modulometer Intensity Adjustment

    In the case of the HD DAC, the Modulometer displays the digital input level. The 0 dB corresponds to full scale signal, meaning the maximum digital level. The modulomenter, in the HD DAC is a twin pointer digitally controlled instrument. Left channel - black pointer...
  • Page 21: Removing The Battery Protection

    Removing the battery protection Two AAA dry cells are already installed in your remote at the factory. Removing the plastic strip will connect the batteries and the remote will become active. Simply tear the plastic strip Nagra – HD DAC...
  • Page 22: Remote Control

    HD DAC. Using a “universal remote” with the HD DAC The HD DAC responds to IR (Infra Red) signals coded in Philips RC-5 format. The HD DAC is allocated a system number 17 for preamplifiers. Should you wish to program your universal remote control, please use the...
  • Page 23: Burn-In Period

    Burn-in period In order to obtain optimal performance from the Nagra HD DAC, it is preferable to leave the device switched on for about 15 minutes before use, so that the internal components can reach their optimum operating temperature. Like all tube electronic devices, the Nagra HD DAC needs a running-in period. It will reach peak performance after a few hundred hours operation.
  • Page 24: Technical Specifications

    Technical specifications Below are the typical specifications for the Nagra HD DAC. Your own specific HD DAC’s exact specifications are to be found on the “protocol” delivered with your unit. Inputs 2 x S/P DIF, 2 AES/EBU, 1 Optical, 1 Audio USB...
  • Page 25: Déclaration De Conformité

    Déclaration de conformité Declaration of conformity FABRICANT: AUDIO TECHNOLOGY SWITZERLAND SA, 1032 Romanel, SUISSE MANUFACTURER: AUDIO TECHNOLOGY SWITZERLAND SA, 1032 Romanel, SWITZERLAND APPAREIL: Nagra HD DAC MODEL: Nagra HD DAC NORMES APPLICABLES: APPLICABLE NORMS: Champ électromagnétique rayonné EN 55022 Cl. B Radiated electromagnetic field EN 55022 Cl.

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