User's Manual Part 5

CORRECTIVE MAINTENANCE ROI-S05751
5-10
Since the control is not interlocked with the RX
SW, the RX SW control is needed to select CH
which it is IF looped back in 1+1 configuration.
Main Loopback (NEAR END) (for SONET)/
Main Loopback (NEAR END) INTFC (1) or (2) (for SONET
APS)/:
Used for distinguish equipment failure to MUX
equipment or radio equipment. The input signal
from MUX is looped back to the MUX. When no
abnormality is found in the signal with NEAR
END loopback, it is assumed that the radio
equipment (IDU or ODU) has a problem.
Main Loopback (FAR END) (for SONET):
Used for distinguish equipment failure to MUX
equipment or radio equipment. Signal is looped
back at the IDU of the opposite station. When no
abnormality is found in the signal through FAR
END loopback, it is assumed that the local radio
equipment (IDU or ODU) has no problem.
Note: This function is unavailable when 2-WAY/XC is
enabled.
DADE Adjust:
Sets the DADE for Hot Standby SD/Twinpath
configuration. Selects to make INTFC status In-
phase.
Notes: 1. The DADE control applies in 1+1 configuration to
adjust delay time for RX hitless switching when the
INTFC status is indicated Outphase.