3 - 1
T W - 4 7 T W O - W A Y R A D I O I N T E R F A C E
3 SPECIFICATIONS
TW-47 TECHNICAL SPECIFICATIONS
dBu is an absolute measurement. 0 dBu is referenced to
0.775 volts RMS
RADIO TO PARTY LINE
LINE CHARACTERISTICS
Frequency Response
200-20KHz ± 3dB
Max Gain
>=-5dBu
Distortion
<=0.3%
Noise
<=-70dBu
Max Level Before Clipping
>=+17dBu
Green LED Threshold
-22dBu ± 3dB
Red LED Threshold
-16dBu ± 3dB
Input Impedance:
400
Ω ± 100Ω
PARTY LINE TO RADIO
LINE CHARACTERISTICS
Frequency Response
200-8KHz ± 3dB
Max Gain J7 ON, J8 ON
-12dBu ± 3dB
Max Gain J7 OFF, J8 ON
+2dBu ± 3dB
Max Gain J7 OFF, J8 OFF
+27dBu ± 3dB
Distortion
<=0.3%
Noise
<=-50dBu
Max Level Before Clipping
>=0dBu
