The document outlines various alarm issues related to RF units and antennas, including faults, configuration mismatches, and calibration problems. It provides instructions for troubleshooting and resolving these issues, such as power cycling and configuring the ALD switches. The content also mentions the need for inspections, object removal, and equipment updates to address the problems highlighted.

1. RET Problem
ALM-26541
ALD
Maintenance
Link FailureALM-26751
RET Antenna
Motor Fault
ALM-26753
RET Antenna
Not Calibrated ALM-26531
RF Unit ALD
Switch
Configuration
Mismatch
ALM-26752
ALD Hardware
Fault
Alarm
?
ALM-26530
RF Unit ALD
Current Out of
RangeALM-26754
RET Antenna
Data Loss
ALM-26757 RET
Antenna Running Data
and Configuration
Mismatch
Reset RET/TMA
MOD ANTENNAPORT/MOD
RETPORT…...to turn off the ALD
switch of the RF unit connected to the
RET antenna
MOD ANTENNAPORT/MOD
RETPORT to turn on the ALD switch
of the RF unit connected to the RET
antenna.
MOD ANTENNAPORT/MOD
RETPORT…...to turn off the ALD switch
of the RF unit connected to the RET
Replace the ALD (RET/TMA)
MOD ANTENNAPORT/MOD RETPORT
to turn on the ALD switch of the RF unit
connected to the RET.
SCN ALD to scan the new RET
MOD RET to change Serial No.
Inspect for objects
obstructing & clean
Then Calibrate RET
CLB RET:
OPMODE=SUBUNIT,
DEVICENO=??,
SUBUNITNO=1;
End
Is
Cleared??
Yes
NO
NO
Is
Cleared??
DSP ANTENNAPORT/DSP
RETPORT/LST
ANTENNAPORT/LST
RETPORT to query the
configuration of the ALD
Power Supply switch &
Current Threshold.
ALD switch configuration is
consistent with the actual
configuration
Reconnect the cables
between ALD port of the RF
unit to ALD as configuration
plan
consistent
MOD ANTENNAPORT/
MOD RETPORT
Correcting ALD power
supply switch & ALD
Current Threshold
configuration
inconsistent
Is
Cleared??
No
YesSolved
LST RETSUBUNIT to query the
error range of the downtilt
alarm….Is consistent with the
configuration plan??
MOD RETTILT
Set the RET antenna tilt
Is configured downtilt (LST
RETSUBUNIT ) exceeds the
RET antenna capability? (DSP
RETDEVICEDATA). Is
configured downtilt appropriate?
consistent
MOD RETSUBUNIT to
modify the error range of the
downtilt alarm
inconsistent
DLD RETCFGDATA to re-
download the configuration
file of the RET
Spare before move:
Triple Power Wave (8230.4) + Single Power
Wave (8210.4)
Amphenol/JayBeam Triple = (MDDU-G20G22)
Amphenol/JayBeam Single = (MDCU-G0000)
KATHREIN RET KRY12163/1
+ cable RET from each type (02230BUF,
1/TSR48421/3000, 1/TSR48431/2500
and 04070097) + jumper 6m and 3m +
connector 7/8 + Weatherproofing Kits (221213)
Cleaning KIT
(White Grease + DWL + Brushes + Dry Textile/
Towel …)
Power cycle the RF unit
then Replace or swap the
RF unit if not solved
No
Solved
Related Faults
26530 RF Unit ALD
Current Out of Range
26531 RF Unit ALD
Switch Configuration
Mismatch
Yes
Yes
No
LST RET/LST TMA
vendor code ,
equipment serial
number, antenna type,
and control port
(Configured=actual
situation).
No
Yes
MOD RET/MOD
TMA/MOD
RETSUBUNIT/MOD
TMASUBUNIT to
actual situation
No
Not Solved
Solved
http://eg.linkedin.com/in/mohamedabdelrazekbakry
Mobile +201003740215
For More Details
M Abd El Razek
Not Solved