Yamaha AD8HR AD User Manual

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8
Basic Operations
Setting the High Pass Filter
Each channel features a high pass filter (12dB/octave) 
that you can turn on or off. You can set individual cut-
off frequencies for each channel’s high pass filter.
1
Press the Channel Select button to select a 
channel.
The selected channels’ Channel Select button 
indicators light up. The channel HPF indicator lights 
up when the high pass filter for the selected channels is 
turned on.
2
Press the [HPF] button to turn the channel 
high pass filter on or off.
3
To change the cut-off frequency, press and 
hold down the [HPF] button for more than 
two seconds.
The [HPF] button indicator flashes rapidly and the 
Gain display indicates the cut-off frequency. 
4
Rotate the Gain control to set the cut-off fre-
quency.
You can set the cut-off frequency in the range of 20Hz 
through 600Hz (in 60 steps).
5
Press the [HPF] button again.
The [HPF] button indicator returns to the previous 
(on or off) status and the Gain display indicates the 
gain value.
Copying the Channel Settings
Follow the steps below to copy channel settings to 
another channel. You can copy the following settings: 
channel gain, high pass filter on/off, cut-off frequency, 
and phantom power on/off. The gain trim value will 
not be copied.
1
Press and hold down the Channel Select but-
ton of the copy source channel, and press the 
Channel Select button of the copy destination 
channel.
The channel settings will be copied. To copy the same 
channel settings to a different channel, continue 
holding down the Channel Select button of the copy 
source channel, and press the Channel Select button of 
the target channel.
Selecting the AES/EBU Format
You can select Double Speed mode (AE1) or Double 
Channel mode (AE2) for the AES/EBU format.
■ Double Speed Mode
In Double Speed mode, digital audio data is 
transmitted at the current higher sampling rate (i.e., 
88.2kHz or 96kHz). Select this mode if the devices that 
support the higher sampling rates receive data.
The [DIGITAL OUT A] and [DIGITAL OUT B] 
connectors each output digital audio data routed from 
Channels 1–8.
■ Double Channel Mode
In Double Channel mode, digital audio data is 
transmitted as mono signals at a sampling rate that is 
exactly half (44.1/48kHz) the current higher sampling 
rate. The data is handled by two channels. This is 
useful when you wish to transfer data from the 
AD8HR running at a higher sampling rate to legacy 
44.1/48kHz digital devices.
The [DIGITAL OUT A] connector outputs digital 
audio data routed from Channels 1–4, and the 
[DIGITAL OUT B] connector outputs digital audio 
data routed from Channels 5–8. However, if the 
AD8HR is running at a sampling rate of 44.1/48kHz, 
each connector outputs digital audio data routed from 
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).
1
Turn off the power to the AD8HR.
2
Press and hold down the [WORD CLOCK] but-
ton and the Channel Select button of Channel 
1 or 2, then turn on the [POWER] switch.
Pressing the Channel Select button of Channel 1 will 
select Double Speed mode (AE1). Pressing the 
Channel Select button of Channel 2 will select Double 
Channel mode (AE2). At the same time, the Gain 
display will indicate the selected mode (AE1 or AE2) 
for one second.