Option Board 4 Ch Microphone Inputs

Option Board 4 Ch Microphone Inputs (O_AIX_4MIC_a)

Analog Inputs

• 4 channels

• Connector type = D-Sub25 female connector

• Microphone or line input operation
  

• Microphone mode @ 150 Ohm load:

  • input-impedance mic: 9 kOhm, electronically balanced

  • gain range: -10 dB (Pad), 0 dB, 10 dB ... 65 dB

  • phantom power: +48 V DC, individually switchable per channel

  • frequency response @ 48 kHz sampling rate: +/- 0.1 dB, 11 Hz to 22 kHz

  • dynamic range @ 10 dB gain: 115.3 dB RMS unweighted, 118.0 dB A-weighted

  • equivalent input noise: -128 dB

• Line mode @ 40 Ohm load:

  • input-impedance line: 20 kOhm, electronically balanced

• Common data:

  • analog line channel to channel isolation, 20Hz to 20kHz @ 10 dB gain: min. 118 dB

  • THD+N @ -3 dBFS, 1 kHz, 10 dB gain: 0,00075 %

  • THD+N @ -3 dBFS, 1 kHz, 40 dB gain: 0,0075 %

  • THD+N @ -3 dBFS, 1 kHz, max gain: 0,020 %

Connector DB-25 Pin Assignment