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 linelevel inputs.
PRECAUTIONS PLEASE READ CAREFULLY BEFORE PROCEEDING * Please keep this manual in a safe place for future reference. WARNING 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: appear to be malfunctioning, discontinue use immediately and have it inspected by qualified Yamaha service personnel.
Explanation of Graphical Symbols CAUTION 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 lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
ADVARSEL! IMPORTANT NOTICE FOR THE UNITED KINGDOM Connecting the Plug and Cord WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT.
Part Names and Functions Part Names and Functions Front Panel 3 4 7 5 96kHz 88.2kHz 48kHz 44.1kHz +48V HPF +48V MASTER dB OFF ON WORD CLOCK 1 2 6 8 A WORD CLOCK indicators B [WORD CLOCK] button C +48V indicators These indicators indicate the on/off status of the +48 phantom power of the corresponding channels. D HPF indicators These indicators indicate the on/off status of the high pass filter of the corresponding channels.
Part Names and Functions NOTE: To avoid loud noise from the speakers, turn on the power first to the connected devices that are closest to the sound source. Example: Sound source → AD8HR → Mixer → Power amplifier To turn off the power to the system, reverse the order described above. Rear Panel 3 1 2 4 5 6 7 A Grounding screw For safety, use this screw to ground the AD8HR. The included power cable has a three-pin plug.
Basic Operations Basic Operations Selecting the Wordclock 3 You can select from the following wordclock source options: internal clock (44.1kHz, 48kHz, 88.2kHz, and 96kHz), WORD CLOCK IN, or DIGITAL OUT A. 1 2 Press the [WORD CLOCK] button repeatedly to select the wordclock source. The indicator of the selected wordclock flashes rapidly. While the indicator is flashing rapidly, press the [WORD CLOCK] button again.
Basic Operations 2 3 Rotate the Gain control to adjust the gain trim value. You can adjust the gain trim value in the range of –1.5dB through +1.5dB in 0.1dB steps. Press the same Channel Select button again. The Channel Select button indicator lights up and the Gain display indicates the gain value. Selecting the AES/EBU Format You can select Double Speed mode (AE1) or Double Channel mode (AE2) for the AES/EBU format.
Basic Operations Adjusting the LED Brightness Follow the steps below to adjust the brightness of the front panel LED and Gain display. 1 While pressing and holding down the Channel Select button of Channel 8, rotate the Gain control to adjust the brightness. You can adjust the brightness in seven steps. Panel Operation Lock You can lock the buttons and controls on the front panel to avoid any trouble due to unauthorized or unintentional operation.
Connection Examples Connection Examples AES/EBU Connections AD8HR Daisy Chain Connection 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. Digital audio devices (PM5D, DM2000, etc.) You can connect multiple AD8HRs to a Yamaha PM5D or DM2000.
Wordclocks Wordclocks For proper AD conversion and digital audio data transmission and reception, the D8HRs and external digital audio devices must lock to an identical wordclock. The AD8HR is capable of transmitting a wordclock signal of 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.
Appendix Appendix General Specifications ■ Analog Input ■ LEDs INPUT 1–8 XLR-3-31 AD converter WORD CLOCK Balanced 24-bit linear 128-times Oversampling [44.1kHz]/[48kHz]/[88.
Appendix 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 Conditions MIN TYP MAX UNITS INPUT 1–8 DIGITAL OUT 1–8 GAIN: –62 dB –3 1 dB INPUT 1–8 DIGITAL OUT 1–8 GAIN: +10 dB –1.5 1 dB fs=88.
Appendix ■ LED Level Meter Input INPUT 1–8 Output DIGITAL OUT 1–8 Conditions Jitter of PLL 0 dBFs dBFs –12 amber LED: ON –12 dBFs –18 amber LED: ON –18 dBFs –30 green LED: ON –30 dBFs –48 green LED: ON –48 dBFs MAX UNITS Normal Rate 39.69 MIN TYP 50.88 kHz Double Rate 79.38 101.76 kHz DIGITAL IN fs=44.1kHz 10 ns DIGITAL IN fs=48 kHz 10 ns DIGITAL IN fs=39.69–50.88 kHz 20 ns DIGITAL IN fs=88.2 kHz 10 ns DIGITAL IN fs=96 kHz 10 ns DIGITAL IN fs=79.38–101.
Appendix HA REMOTE Pin Assignment Table Pin Signal Name Pin Signal Name 1 N.C. 6 RX+/DSR*1 2 RX-/RXD*1 7 RTS 3 TX-/TXD*1 8 CTS 4 TX+/DTR*1 9 N.C. 5 GND *1. RS422/PC 383.5 19 250 353.5 50 11 Dimensions 44 45 480 65 When the included rubber feet are attached* 350 Unit mm * 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.
FCC INFORMATION (U.S.A.) 1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! not guarantee that interference will not occur in all installations. If this product is found to be the source of interference, which can be determined by turning the unit “OFF” and “ON”, please try to eliminate the problem by using one of the following measures: Relocate either this product or the device that is being affected by the interference.
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. 135 Milner Avenue, Scarborough, Ontario, M1S 3R1, Canada Tel: 416-298-1311 U.S.A. Yamaha Corporation of America 6600 Orangethorpe Ave., Buena Park, Calif. 90620, U.S.A.
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