Nortel Internet BWA System 3200, User Manual

Page: 22 / 68

4-2 Trouble clearing procedures
Internet BWA System 3200 NTXXXXXX Rel 3.0 Draft October 2000
Clearing the Radio alarms
Table 4-1 lists the Internet BWA System 3200 alarms, an explanation of the
alarm, the probable cause, and the action required to clear it.
Table 4-1
iBAR-100 system alarms
Alarm Explanation Probable cause Action required
Tributary
N
Tx LOS The Internet BWA
System 3200 cannot
detect a signal at the
tributary input. Defective customer
equipment connected to
Internet BWA System 3200. Verify customer
equipment. Replace if
defective.
Internet BWA System 3200
cable is disconnected. Connect cable.
The cable from customer test
set to Internet BWA System
3200 is disconnected. Connect test set cable.
Tx low output power Far-end radio is
reporting that the RSSI
from the local radio is
too low
Insufficient Tx power setting
at the local site. Increase Tx power setting
at the local site.
Atmospheric problems Wait for the end of
atmospheric problems
Rx Frame Loss
(radio) The receiver has
detected a loss of frame
condition on the Radio
channel. There is a Tx failure at the
far-end site. Check for other alarms in
the system.
Severe propagation (RSSI is
very low). Check that the Tx power
is set correctly at the
far-end site.
Check the RF cables.
Wait for the end of
propagation activity.
Low RSSI The performance
degradation threshold
has been crossed. Minor propagation activity. If the RSSI is lower than
the threshold, wait for the
end of propagation
activity.
Waveguide or RF connector
is incorrectly installed. Verify the waveguide and
cabling connection.