IDA8 Global-Net User Manual
536
© 2017, ATEÏS, member of PAX ProAV Group
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
Output Impedance =10k Ohm
Bandwidth =±1dB@ 20Hz ~ 20kHz
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
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
Distance up to 1000 meters for using external power supply.
Note: The distance using internal power supply is differ from each product.
Evacuation Inputs(Contact Mode)
4 status: On, Off, Open and Short
Evacuation Inputs(Voltage Mode)
On Voltage
Item
Minimum
Maximum
Unit
High
18
72
VDC
Low
-
0.5
VDC
Contact O EVAC, Fault State Outputs
Item
Minimum
Maximum
Unit
Voltage
-
100
VDC
Current
-
0.5
ADC
Contact Output Relay
