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Yamaha AD8HR AD manual

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Table of contents for the manual

  • Page 1

    E Thank you for choosing the Y amaha AD8HR AD converter with remote microphone preamp. The AD8HR is an eight-channel AD converter equipped with remote microphone preamps that feature 96kHz, 24-bit linear AD conversion, 128-times oversampling, and a dynamic range of 110dB. Its input section features balanced XLR connectors, high-quality mic preamps,[...]

  • Page 2

    WJ53870 © 2006 Yamaha Corporation U.R.G., Pro Audio & Digital Musical Instrument Division, Yamaha Corporation Notes on rack-mounting the unit If you install the AD8HR along w ith another AD8HR or other device in a rack that is not well ventilated, the temperature inside the rack may rise due to the heat generated from the devices and the devic[...]

  • Page 3

    2 PRECAUTIONS PLEASE READ CAREFULL Y BEFORE PROCEEDING * Please keep this man ual in a safe place f or future ref erence. W ARNING Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short-circuiting, damages, fire or other hazards. These precautions include, but are not [...]

  • Page 4

    3 The abov e warning is located on the top of the unit. Explanation of Graphical Symbols The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “danger- ous voltage” within the product’ s enclosure that may be of sufficient magnitude to constitute a risk of elect[...]

  • Page 5

    4 Part Names and Functions ............... 5 Front Panel ................................................ 5 Rear Panel .................................................. 6 Basic Operations ............................... 7 Selecting the W ordclock ............................. 7 Setting the Phantom Power ....................... 7 Adjusting the Gain[...]

  • Page 6

    Part Names and Functions 5 Front Panel A WORD CLOCK indicators These indicators indicate the currently select ed wo rd clock source. If the unit is not locking to the selected wor dclock source, the corresponding wo rd clock source indicator flashes. B [WORD CLOCK] button This button enables y ou to select the wordclock sour ce from 44.1kHz, 48kHz[...]

  • Page 7

    6 Part Names and Functions Rear Panel A Grounding screw Fo r safet y , use this scr ew to ground the AD8HR. The included power cable has a thr ee-pin plug . If the A C outlet is grounded, the AD8HR will be g rounded co rr ectly via the power cable. If the A C outlet does not provide a suitable ground, this screw must be co nnected to a suitable gro[...]

  • Page 8

    Basic Operations 7 Selecting the W ordclock Y ou can select from the following wor dclock sourc e options: internal clock (44.1kHz, 48kHz, 88.2kHz, and 96kHz), W ORD CLOCK IN, or DIGIT AL OUT A. 1 Press the [WORD CLOCK] button repeatedly to select the wordclock source. The indicator of the selected wordclock flashes rapidly . 2 While the indicator[...]

  • Page 9

    8 Basic Operations Setting the High Pass Filter Each channel featur es a high pass filter (12dB/octav e) that you can turn on or off. Y ou can set indiv idual cut- off frequencies for each c hannel’ s hig h pass filter . 1 Press the Channel Select button to select a channel. The selected channels ’ Channel Select button indicators light up. T[...]

  • Page 10

    Basic Operations 9 Adjusting the LED Brightness Fo llow the steps below t o adjust the br ightness of the front panel LED and Gain displa y . 1 While pressing and holding down the Channel Select button of Channel 8, rotate the Gain control to adjust the brightness. Y ou can adjust the brig htness in seven steps. Panel Operation Lock Y ou can lock t[...]

  • Page 11

    10 Connection Examples AES/EBU Connections U se a D-sub 25-pin AES/EBU cable to c onnect a digital audio dev ice that supports the AES/EBU format. T o connect a Y amaha PM5D or DM2000 to the AD8HR, first you must install an optional I/O car d (MY8-AE, MY8-AE96S, MY8-AE96, or MY16-AE) in the PM5D or DM2000. AD8HR Daisy Chain Connection Y ou can con[...]

  • Page 12

    Wordclocks 11 Fo r proper AD c onversion and digital audio data transmission and reception, the D8HRs and external digital audio dev ices must lock t o an identical wordclock. The AD8HR is capable of transmitting a wo rd clock sig nal of 44.1kHz, 48kHz, 88.2kHz, and 96kHz, you can use the AD8HR as the wor dclock master and the exte rnal dev ices as[...]

  • Page 13

    12 Appendix General Specifications ■ Analog Input INPUT 1–8 XLR-3-31 Balanced AD converter 24-bit linear 128-times Oversampling ■ Digital Output DIGIT AL OUT A, B D-Sub 25-pin Balanced ■ Connectors WORD CLOCK IN (75 Ω Auto T erminated): BNC WORD CLOCK OUT : BNC HA REMOTE (PC-RS422): D-Sub 9-pin with PC-RS422 switch HA REMOTE (RS422): D-S[...]

  • Page 14

    Appendix 13 Electrical Characteristics M easured at DIGIT AL OUT . Output impedance of signal gener ator: 150 Ω . ■ Frequency Response fs=44.1kHz or 48kHz @20Hz–20kHz, with reference to –1dBFs @1kHz fs=88.2kHz or 96kHz@20Hz-40kHz, with reference to –1dBFs @1kHz ■ Gain Error @1kHz ■ T otal Harmonic Distortion fs=44.1kHz or 48kHz fs=88.[...]

  • Page 15

    14 Appendix ■ LED Level Meter Error Messages The AD8HR aut omatically diag noses itself at the time of powe r up . If it detects a system abnormality , one of the following error messages appears. If an abnormality is detected, consult y our Y amaha dealer . E1: The backup battery voltage is low . If the voltage is low ered further , the stored d[...]

  • Page 16

    Appendix 15 HA REMOTE Pin Assignment T able Dimensions *I f y ou do not intend to rack mount the AD8HR, attach the included rubber feet to the bottom surface of the unit. A ttac h the r ubber feet in the positions marked b y small circles on the bottom. Specifications and descriptions in this owner’ s manual are for information purposes only . Y[...]

  • Page 17

    For details of products, please contact your nearest Y amaha representativ e or the authorized distributor listed below . Pour plus de détails sur les produits, v euillez-vous adresser à Y amaha ou au distributeur le plus proche de vous figurant dans la liste suivante. Die Einzelheiten zu Produkten sind bei Ihrer unten aufgeführten Niederlassun[...]