Ericsson_RND
2012-01-27, 02:46 AM
Dear Expert;
I have problem need your advice, RBS 2111 installed with configration 1*4, two RRU unit used in this mode.
From these two RRU unites, 4 Omini antenna where connected directly each one connected to 1 port of the RRU, the problem is once the drive test performed, it seems only one antenna transmit power, the other three behave like not transmitting.
VSWR was checked for the antennas and feeders there is no problem.
How I can configure the RBS to make all the 4 Omini antenna transmit power at same time, the configration is uncombined mode.
The feeder for the 2nd antenna was connected instead of the 1st antenna and it work properly while the 1st,3rd,4th are not transmit power, same issue doen for the other antenna.
(In all testes only 1 antenna works at time but the other 3 are not)
Regards
E*******_RND
I have problem need your advice, RBS 2111 installed with configration 1*4, two RRU unit used in this mode.
From these two RRU unites, 4 Omini antenna where connected directly each one connected to 1 port of the RRU, the problem is once the drive test performed, it seems only one antenna transmit power, the other three behave like not transmitting.
VSWR was checked for the antennas and feeders there is no problem.
How I can configure the RBS to make all the 4 Omini antenna transmit power at same time, the configration is uncombined mode.
The feeder for the 2nd antenna was connected instead of the 1st antenna and it work properly while the 1st,3rd,4th are not transmit power, same issue doen for the other antenna.
(In all testes only 1 antenna works at time but the other 3 are not)
Regards
E*******_RND