# Option Board 4 Ch Analog I/O

Option Board 4 Ch Analog I/O (O\_DAP\_ADDA\_a)

#### Audio

- 24-bit sigma-delta D/A converter, 24 bit D/A converter
- 4 input channels, 4 output channels
- Sample rate = 44.1, 48kHz

<p class="callout warning">**Important** - Not all sample rates are supported by the host system, please refer to the respective information.</p>

#### Analog Inputs

- 4 channels
- Connector type = D-Sub25 female connector
- Input Level (maximum) 0dBFS equivalent = 0 ... 24dBu, adjustable in 0.5dB steps
- Impedance = 20kOhm (typical), differential
- THD+N = -93dB @ 0dBFS = 15dBu, 1kHz
- Dynamic range = &gt;110dB (RMS)
- Crosstalk attenuation = &gt;93dB @ 0dBFS = 15DBu, 1kHz
- CMRR = &gt;71dB @ 0dBFS = 15dBu, 1kHz
- Frequency response = 20Hz ... 22kHz (&lt; +/-0.1dB) @ 48kHz; 20Hz ... 43kHz (&lt;+/-0.1dB) @ 96kHz

#### Analog Outputs

- 4 channels
- Connector type = D-Sub25 female connector
- Output level (maximum) 0dBFS equivalent = 0 ... 24dBu, adjustable in 0.5dB steps
- Impedance = 50Ohm (typical) differential
- THD+N = -91dB @ 0dBFS = 15dBu, 1kHz
- Dynamic range = &gt; 103dB @ 0dBFS = 15dBu, 1 kHz
- Frequency response = 20Hz ... 22kHz (&lt; +/-0.1dB) @ 48kHz; 20Hz ... 43kHz (&lt;+/-0.1dB) @ 96kHz

#### General Features

- Power fail relay bypass between inputs and outputs
- Balanced analog inputs and outputs
- Electrical isolation between inputs, outputs, and device