ADC ADDC1 Programming the Aux Output, Adat or AES/EBU on the Optical Output, Meter Display

Programming the Aux Output

The Aux Output can be programmed to mirror the Main Outputs (bit for bit), or it can provide an independent low-resolution copy of the converted signal, at an independent sample rate. Column three of the Mode Indicator displays the Aux Output mode setting.

Note that no matter how the Aux Output is programmed it does not affect the Main Outputs in any way.

To program the Aux Output

Press down on the Mode Switch repeatedly to cycle through the Aux Output mode settings until the right-hand column of LEDs in the Mode Display matches the desired mode based on the diagrams below.

Exact Copy of	44.1 kHz	48 kHz
Main Outputs
	16-bit	16-bit
(24-bit)

ADAT or AES/EBU on the Optical Output

The Optical Output (on of the three Main Outputs) can provide either AES/EBU or ADAT format. The bottom LED in the middle column of LEDs indicates what mode the Optical Output is in.

When ADAT is active, S/MUX is automatically enabled at all 2X and 4X sample rates (88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz).

To select between ADAT or AES/EBU on the Optical Output

Press and hold the Mode Switch down until the Optical Output mode LED matches the desired mode based on the diagram below.

ADC1 Instruction Manual

Off = AES/EBU on Optical

Output

On – ADAT on Optical Output

Resetting the ADC1 to Factory Default Settings

The ADC1 can be easily reset to Factory Default settings.

To reset the ADC1 to Factory Default settings

•Press and hold the Mode Switch up for approximately 3 seconds.

Meter Display

The ADC1 is equipped with a multi-function 9- segment LED meter. The Meter Switch selects either a 6 dB/step or 1 dB/step scale and controls the peak-hold function. Metering is fully-digital and is post conversion for absolute accuracy. The units are dBFS (dB below the level of a full-scale sine wave, or more simply, dB below digital clip).

Meter Switch and Meters

Time constants are built into the meters so that all transient peaks can be observed easily. If a transient peak having a duration as short as one digital sample occurs, an LED will be illuminated, and will stay illuminated long enough to be observed by the human eye.

A peak indication mimics the action of the needle on a peak-reading analog meter, while the remaining LEDs will follow the instantaneous level of the audio.

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