- This topic has 5 replies, 1 voice, and was last updated 15 years, 3 months ago by Zayyat.
9th January 2007 at 18:25 #46415chinmayGuest
i am getting the alarm-rx level differ too much between main and diversity antennas ”
i have checked all internal cabling,trx but still the alarm comes.
what can be the reason and how to rectify11th January 2007 at 06:39 #46416godfrey TshiamoGuest
hi chinmay,try changing the tru concerned11th January 2007 at 15:41 #46417PatrickGuest
BCF-027 BTS-081 EQUIPM 2007-01-10 23:17:06.11
** ALARM C73700C
(19882) 7604 BTS OPERATION DEGRADED
Rx levels differ too much between main and diversity antennas.
02 01 07 96 00 00
This alarm coming when you have a problem between MAIN and DIV.
You can see your problem with BTS manager => rssi comparaison value.
If the difference is superior to 5 (i don’t remember 5 or more or less) => alarm rx level appears.
the commissioning of BTS is very important because it is compare all cable connected.
Copler DVxx compare the value of feeder ROSS.
You can do TRX TEST and see result of ROSS antenna. (110dbm sensibility)
check your feeder.23rd April 2007 at 12:50 #46418ZayyatGuest
Hi chinmay !
If u r getting this alarm on specified TRXs (One) u can swapp this TRX with another one (Same Type -TSGB,A,TRXA,D …etc) if the problem will be transferded to with this TRX u have to chenge the TRX!!
Otherwise u have check all cables and jumpers and the connectors every where.
Of course u can do the above after VSWR checking, if its good u can only swapp the TRXs.
Tell me please where exactly u r getting this alam?On whole sector, segment, BTS, or only on one TRX?!28th April 2007 at 18:21 #46419chinmayGuest
tnx to all for the replies.
if rssi value is high in the whole sector then what can be the problem.is it dvja problem?29th April 2007 at 08:49 #46420ZayyatGuest
Dear chinmay ,
Did u check the VSWR?if yes,is it normal?
Yes u can swapp the Duplexer (DVGA,DVDA)with another one wich is working normal,and again if the plroblem will transfered means u have to replace the DVGA with new one.and swapp also the multicopler but be sure to swapp it with another one,different sector,means swapp the DVGA in sector and the multicopler in other sector to deploy them in diffirent sectors.