Yamaha AD8HR AD8HR Owners Manual - Page 8
Setting the High Pass Filter, Copying the Channel Settings, Selecting the AES/EBU Format
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Basic Operations 2 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. 3 Press the same Channel Select button again. The Channel Select button indicator lights up and the Gain display indicates the gain value. 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 cutoff 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. 8