- This topic has 63 replies, 1 voice, and was last updated 3 years ago by hh.
2nd September 2007 at 13:54 #49048DasGuest
I am facing a lots of RX diversity loss alarm. I already checked the feeder, it is ok. TRU is also OK. What can be the other reason for this alarm? What is supervision measurement value?3rd September 2007 at 04:54 #49049asoGuest
you check for VSWR from the bottom of antenna ?3rd September 2007 at 18:08 #49050patrick.frGuest
tell me exactly the name of alarm and its number?4th September 2007 at 14:01 #49051emreGuest
which freq ? 900 1800
if 900 MHz you need to check distance from anttennas at same sector
(must be 2 lambda lenght)6th September 2007 at 11:15 #49052Navdeep singhGuest
please check ur loose connectors of RX and TX at BTS and then you can go for the next step i.e VSWR
it should be not more than 1.5.you can check it with your OMT software.13th September 2007 at 11:26 #49053AssaGuest
Hi, also check if there is a correct connection of BTS and antennas. Maybe some fiders are mixed up. So you don’t have any diversity on RX.19th September 2007 at 08:09 #49054Geet MukhraGuest
Check ur CXU or splitter as it is used for splitting RX .Sometimes this port gets faulty.Replace it and then check…..assuming u hav checked everything else.18th March 2009 at 07:47 #49055amanGuest
tell me why the diversity alarms are arrise in two sectors18th March 2009 at 07:54 #49056amanGuest
tell me about vswr probem how to resolve19th March 2009 at 09:09 #49057RexGuest
could be antenna feeder,RX-TX cables between TRE and combiner or combiner itself.22nd June 2009 at 06:14 #49058shirishGuest
i need diversity alaram details for EVDO23rd June 2009 at 03:07 #49059EdGuest
Try the following suggestions earlier posted. They are all related to RX diversity alarm.
Also possible cause for Rx diversity alarm is the mismatched / or losses on the RX received between the two diversities.
What equipment are u using? and what type of diversity if any(SPACE or Polarization)? Try to check if there is diversity on the site.
For Ericsson Network try to check the diversity if its AB. If then, try to set it to A only or to B only which ever good performance will be achieved for isolation purposes.23rd June 2009 at 20:26 #49060JamilGuest
Try to go to OMT check the display fault RUs and see where is the fault which sector and what is the Rbs 2206-211624th June 2009 at 09:40 #49061MaximGuest
if u are RX diversity alarm, try to switch off and switch on 5 min after ur RBS and the alarm creased. Thanks31st August 2009 at 08:42 #49062Achmad FatoniGuest
what causes the RX diversity lost ?