7700 MultiFrame Manual
7707IT Multi-Channel Intercom Fiber Transceiver
Revision 1.7
Page - 11
3.
SPECIFICATIONS
3.1.
ANALOG AUDIO
3.1.1. Balanced/Matrix Type Audio
Number of Signals:
7707IT-8:
8 Inputs, 8 Outputs
7707IT-3:
3 Inputs, 3 Outputs
Type:
Analog Audio, Balanced
Connector Type:
Multi-pin Removable Terminal Block
Input Impedance:
> 10K
Ω
Output Impedance:
66
Ω
Signal Resolution:
24-Bits
Sampling Rate:
52.7KHz
Frequency Response:
20Hz to 20KHz
Gain Flatness:
±
2dB
Input Level (max):
+20dBu
Output Level (max):
Into 10K
Ω
:
+20dBu
Into 600
Ω
:
+19dBu
Signal/Noise Ratio:
> 90dB
THD @1KHz:
< 0.01%
Crosstalk:
< -80dB
Controllable Gain:
-10dB to +10dB
3.1.2. Unbalanced/Party-Line Type Audio
Number of Signals:
7707IT-8:
8 Inputs, 8 Outputs
7707IT-3:
3 Inputs, 3 Outputs
Type:
Analog Audio, Full-duplex, Unbalanced
Connector Type:
Multi-pin Removable Terminal Block
Signal Coupling:
AC coupled (accommodates 30V ‘wet’ inputs)
Bridging Impedance:
>10K
Ω
Signal Resolution:
24-Bit
Sampling Rate:
52.7KHz
Sidetone Null:
> 25dB
Sidetone Null Range:
100
Ω
to 300
Ω
load
Frequency Response:
120Hz to 20KHz
Gain Flatness:
±
2dB
Input Level (max):
+5dBu
Output Level (max):
+5dBu (into 200
Ω
load)
Signal/Noise Ratio:
> 75dB
THD @1KHz:
< 0.1%
Crosstalk:
< -60dB
Controllable Gain:
-5dB to +5dB (into 200
Ω
load)
Receive Signaling:
4VDCmin (ClearCom), 20KHz
±
500Hz (RTS)
Send Signaling:
11VDCmin (ClearCom), 20KHz
±
100Hz (RTS)
