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.
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.
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.
• 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...
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.
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.
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:...
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.
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.
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.
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 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):...
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...
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.
*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.
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.