ATEIS IDA8 User Manual

Page 58

ATEIS - IDA8

Sensitivity:

For each channel of a configurable audio input card, there are five levels to gain the audio signal.
They are sensitivity values of 0dBu, -12dbBu, -24dBu, -40dBu and -54dBu respectively. The
meaning of sensitivity value is how large the gain is for an audio source, and to amplify the
giving minus input source to 0dBu. The figure below is an example of when the sensitivity value
is set to -54dBu, and input source is -54dBu, after the gaining circuit of the audio card you'll get
the 0dBu of output. For more information as reference, please see

this.

Maximum level = 14 dBu

Input Impedance = 10k Ohm

THD+N(Total Harmonic Distortion plus Noise)

Sensitivity

Minimum

Maximum

Unit

Frequency

0dBu

0.04

20~20kHz@+4dBu

-12dBu

0.06

20~20kHz@-2dBu

-24dBu

0.06

20~20kHz@-14dBu

-40dBu

0.06

20~20kHz@-30dBu

-54dBu

0.06

20~20kHz@-44dBu

Bandwidth = 20Hz ~ 20kHz

PDC:

Maximum Output Level = 10 dBu

Output Impedance = 300 Ohm

THD @ 1kHz at output < 0.02

Bandwidth @ -3dB at output = 20Hz ~ 20kHz

Noise @ 22Hz ~ 22kHz = -85dBu

Maximum Input Level = 16 dBu

Input Impedance = 11k Ohm

THD @ 1kHz at input < 0.02

Bandwidth @ -3dB at input < 20Hz ~ 22kHz

RS232 voltages = -6.5/+6.5

Evacuation Inputs(Contact Mode):

4 status: On, Off, Open and Short