ART Pro Audio DIO - A/D Converter - Manual (Page 4)

- 4 -
CONTROLS & INDICATORS
INPUT GAIN CONTROL
The Input Gain control allows you to add gain to the input signal before
the tube and A/D converter. Turn the control clockwise to increase gain
and counterclockwise to decrease gain. At the fully counterclockwise
position (0dB), incoming signals are passed at unity gain to the A/D
converter. At this setting the inputs can handle “hot” signals, up to
+20dBu, before clipping the A/D. When the Input Gain control is at the
fully clockwise position (+20dB), the incoming signal is boosted in level
before the A/D. This allows you to increase low level signal sources by
up to 20dB, to maximize the input dynamic range of the A/D. In normal
operation you would increase the Input Gain control until the red “0dB”
LED just lights on signal peaks.
SAMPLE RATE SWITCH
Use the Sample Rate Switch to select the desired sample rate. Each
time you press the switch, it increments through the available choices
while the LEDs beside it show the current state. The DI/O remembers
the sample rate setting and powers up at the same sample rate that it
was in before power was removed. This allows you to, in many
applications, set the sample rate for your system once and leave it.