User's Manual
Table Of Contents
FCC ID : U88GSTR1930DT-SPR       
HYUNDAI CALIBRATION & CERTIFICATION TECHNOLOGIES CO., LTD. 
SAN 136-1, AMI-RI, BUBAL-EUP, ICHEON-SI, KYOUNGKI-DO, 467-701, KOREA 
TEL:+82 31 639 8517  FAX:+82 31 639 8525 www.hct.co.kr 
23
In case of drop 
call or bad 
 signal after 
set up 
* Check receipt signal strength 
in the service area not to be 
too low. 
* Increase output power level of repeater by adjusting 
attenuation level. 
Same as above 
* If receipt signal strength is 
not a problem, please check 
delay of calling time. 
* Please increase output level of Uplink signal, then setting by 
optimal level.. 
Same as above  * Check receipt signal strength
* Please contact network management team or service 
provider 
In case, output 
Signal 
wavelength is 
not shown flat 
or looks like 
oscillation 
* Check connection fastened 
between antenna and cable 
(Signal wavelength should be 
flat and stable if technicians 
shake CABLE. If not, it is 
connection problem.) 
* If connection is not proper, please make sure connector and 
cable to be re-connected then check the output power again. 
Same as above 
* Input level change or 
module blazing 
. 
* Check input level from BTS side. 
* Check performance of each module. 
(Diagnosed by A/S team.) 
Same as above 
* Please check VSWR of the 
Cable is normal. 
* Change to normal Cable. 
4.2.4 Trouble shooting guide related to NMS 
Symptom  Check Points  Troubleshooting 
Link fail  * Communication problem 
* In case of Ethernet, check set up level of IP, Gateway and so 
on, when you use Ethernet. 
Same as above 
* CLI Connection, Cable 
status check 
* Make sure 1:1 connection. 
Same as above 
* CLI connection Check by 
USB to Serial Cable 
* Please verify Port number of PC communication. 
* Please check Cable connection status. 
Report No. : HCT-R07-013     23/33 










