User's Manual

E1 Spread Spectrum Radios
8-26
Figure 8-34: Local Loopback Setting
8.7.2 IF Loopback
Under IF Loopback, a self-detection test on any IDU components malfunction is carried out. This function setting is
done through the LCD display button.
Figure 8-35: IF Loopback
This function is performed only through the IDU’s LCD panel.