Basic Operations
9
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. Note that you cannot lock
the operation from the remote control.
1
Press the [WORD CLOCK] button, [+48V] but-
ton, and [HPF] button simultaneously.
This will turn the Panel Operation Lock function on
or off. If the Panel Operation Lock function is turned
on, the Gain display flashes when you operate the
front panel, but you cannot change the settings.
Initializing the Memory
Follow the steps below to initialize the backup
memory to reset to the factory value.
1
Turn off the power to the AD8HR.
2
While pressing and holding down the Channel
Select button of Channel 4 and the [+48V]
button, turn on the [POWER] switch.
The backup memory will be initialized.
The backup memory stores the following settings.
Remote Control
A special protocol enables you to control the AD8HR
from a computer or Yamaha PM5D or DM2000 that is
connected to [HA REMOTE] connector 1. You can
also remotely control up to 255 AD8HRs that are
connected to one another.
When each AD8HR receives control signals, the Gain
display indicates the ID number of the corresponding
unit. This is useful when you wish to identify each of
multiple AD8HRs that are connected in a system.
When you operate the panel on the unit, its ID
number on the Gain display disappears. The ID
number of the AD8HRs is determined based on the
connection order in the daisy chain.
You can also create a daisy chain connection that
mixes AD8HRs and Yamaha AD824 AD converters.
However, in such a system, any AD8HR that is
connected after any AD824 unit (when seen from the
host device; e.g., computer) will be recognized as an
AD824, and you will be unable to control the
following functionality on these AD8HR units. For
this reason, we recommend that you connect all
AD8HR units closer to the host than any AD824 unit.
• High pass filter on/off and cutoff frequency cannot
be controlled
• Gain adjustment will be in 6 dB steps
• [+48V MASTER] switch on/off status cannot be
monitored
If a computer is connected to [HA REMOTE]
connector 1, set the [PC RS422] switch to PC. If you
connect a Yamaha PM5D or DM2000, or another
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.
• When remotely controlling the AD8HR from a Yamaha
DM2000/DM1000, all AD8HR units may be recognized as
AD824 units and some functionality may be limited unless
the DM2000/DM1000 firmware is V2.0 or later. For the
latest information, refer to the following website.
http://www.yamahaproaudio.com/
• If you are connecting the [HA REMOTE] connectors on
two AD8HRs to each other, be careful to avoid loop
connection.
Channel settings
Global settings
• Phantom power on/off
• Gain
• Gain trim
• High pass filter on/off
• High pass filter cut-off
frequency
• Wordclock
• AES/EBU format
• LED brightness
• Panel Operation Lock
setting
