User's Manual

5.8GHz PDH User’s Manual
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8.7.1 Local Loopback
Local Loopback: Under the local loopback mode, it is easier to detect any malfunction at
the E1 interface. Testing equipment is required while detecting because on the execution
of this function, the testing signal cannot enter MOD, so it is not possible to use PRBS to
detect. This function setting is done through the NMS or the LCD display button.
In the System Test window, tick the Setting column for Tributary1. Press Accept Setting.
The IDU’s first E1 interface is now performing the local loopback test. There can be
multiple selection of the test. Press Clear All Test to stop all the settings performing the
test.
Local Loopback
8.7.2 IF Loopback