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Yamaha AD8HR Owner's Manual

Ad converter with remote microphone preamp.
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Owner's Manual
Thank you for choosing the Yamaha 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, +48V phantom power, and support for both mic and line-
level inputs. The output section supports the AES/EBU format and features a high
sampling frequency of 88.2/96kHz. You can easily adjust the gain for each channel
(in 1dB steps) and set up the high pass filter from the front panel. These settings are
stored in the unit's backup memory, and are retained even after the power is turned
off. In addition, a special protocol enables you to remotely control the unit from a
connected computer or other device.
Please read this manual thoroughly before using the unit to take the greatest
advantage of the AD8HR's extensive features for the longest period of time. After you
read this manual, please keep it in a safe place.
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   Summary of Contents for Yamaha AD8HR

  • Page 1

    Please read this manual thoroughly before using the unit to take the greatest advantage of the AD8HR’s extensive features for the longest period of time. After you read this manual, please keep it in a safe place.

  • Page 2

    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 limited to, the following: Power supply/Power cord • Only use the voltage specified as correct for the device. The required voltage is printed on the name plate of the device.

  • Page 3: Important Safety Instructions

    CA UT IO N RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The above warning is located on the top of the unit. IMPORTANT SAFETY INSTRUCTIONS Read these instructions.

  • Page 4: Table Of Contents

    • Do not throw away the battery. Instead, hand it in as small chemical waste. Connection Examples... 10 AES/EBU Connections ...10 AD8HR Daisy Chain Connection ...10 Wordclocks ... 11 AES/EBU Connections ...11 WORD CLOCK jack connection ...11 Appendix ... 12 General Specifications...12...

  • Page 5: Part Names And Functions

    This switch turns the +48V phantom master power on or off. [POWER] switch This switch turns the power to the AD8HR on or off. The gain and high pass filter settings are stored even after you turn off the power to the unit.

  • Page 6: Rear Panel

    Part Names and Functions Rear Panel Grounding screw For safety, use this screw to ground the AD8HR. The included power cable has a three-pin plug. If the AC outlet is grounded, the AD8HR will be grounded correctly via the power cable. If the AC outlet does not provide a suitable ground, this screw must be connected to a suitable ground point.

  • Page 7: Basic Operations

    flashing (it will flash for five seconds), the new selection is cancelled and the previous wordclock is selected. If the AD8HR is not locking to the selected wordclock source, the corresponding wordclock source indicator flashes. NOTE:...

  • Page 8: Setting The High Pass Filter

    Channels 1–8. If the wordclock master is DIGITAL OUT A, the AD8HR will run at a clock rate that is twice (88.2/ 96kHz) the incoming clock (44.1/48kHz). Turn off the power to the AD8HR.

  • Page 9: Adjusting The Led Brightness

    AD8HR in a multiple AD8HR system, to [HA REMOTE] connector 1, set this switch to RS422. NOTE: • If you are remotely controlling the AD8HR from a device that supports only the AD824, the device will recognize all AD8HRs as AD824s.

  • Page 10: Connection Examples

    Use a D-sub 25-pin AES/EBU cable to connect a digital audio device that supports the AES/EBU format. To connect a Yamaha PM5D or DM2000 to the AD8HR, first you must install an optional I/O card (MY8-AE, MY8-AE96S, MY8-AE96, or MY16-AE) in the PM5D or DM2000.

  • Page 11: Wordclocks

    44.1kHz, 48kHz, 88.2kHz, and 96kHz, you can use the AD8HR as the wordclock master and the external devices as wordclock slaves. The AD8HR can also lock to the wordclock signal received at the [DIGITAL OUT A] connector or [WORD CLOCK IN] connector.

  • Page 12: Appendix

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

  • Page 13: Electrical Characteristics

    Electrical Characteristics Measured at DIGITAL OUT. Output impedance of signal generator: 150Ω. ■ Frequency Response fs=44.1kHz or 48kHz @20Hz–20kHz, with reference to –1dBFs @1kHz Input Output INPUT 1–8 DIGITAL OUT 1–8 GAIN: –62 dB INPUT 1–8 DIGITAL OUT 1–8 GAIN: +10 dB fs=88.2kHz or 96kHz@20Hz-40kHz, with reference to –1dBFs @1kHz Input Output...

  • Page 14: Error Messages

    Signal Delay Error Messages The AD8HR automatically diagnoses itself at the time of power up. If it detects a system abnormality, one of the following error messages appears. If an abnormality is detected, consult your Yamaha dealer. The backup battery voltage is low. If the voltage is lowered further, the stored data will be erased. Ask your dealer to replace the battery.

  • Page 15: Ha Remote Pin Assignment Table

    *1. RS422/PC Dimensions * If you do not intend to rack mount the AD8HR, attach the included rubber feet to the bottom surface of the unit. Attach the rubber feet in the positions marked by small circles on the bottom.

  • Page 16: North America

    For details of products, please contact your nearest Yamaha representative or the authorized distributor listed below. Pour plus de détails sur les produits, veuillez-vous adresser à Yamaha ou au distributeur le plus proche de vous figurant dans la liste suivante. NORTH AMERICA CANADA Yamaha Canada Music Ltd.

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