User's Manual

Version
1.1
Date
January 28th, 2019
Page
24/ 49
Title
USER MANUAL
Prepared by
Reviewed by
Approved by
© 2019 GS Teletech Inc. All rights reserved
24
Parameter
Alarm conditions
Recovery
UL Low Isolation
Isolation < 70dB
Opposite Condition
UL Over Output
Output power Exceed a setting value (Band
independently)
< Hysteresis 2dB
NR
DL Over Output
Output power exceed a setting value (Band
independently)
< Hysteresis 1dB
DL Low Output
Band Output power < Output power Low limit value
Opposite Condition
DL Low RSSI
Band RSSI < Input Low limit value
Opposite Condition
DL VSWR
Return loss < 5dB
Return loss > 7dB
DL Shutdown
By Over Output Alarm, By PLL Alarm, By Amp H/W Fail
By Low Isolation
Alarm Off
AMP H/W Fail
Power AMP gain is poor
AMP Output Power < DSP Output Power -20dB over 30sec
Power AMP Gain OK
DL Low Isolation
Isolation < 70dB
Opposite Condition
UL Low Isolation
Isolation < 70dB
Opposite Condition
UL Over Output
Output power Exceed a setting value (Band
independently)
< Hysteresis 2dB
Common
DFM HW Fail
DFM FPGA Fail (Judging from MCU, Except for RESET)
DL/ UL Output Shutdown
Alarm & Power
Recovery
DFM Link Fail
Communication Fail between DFM & SNMP
Communication
T-Sync Alarm
TDD Downlink Signal is not detected over 30sec
Signal is detected
over 30sec
T-Sync Link Fail
No response more than 10times
At once
Temperature
System: REAL Temp>Setting Value
Refer to Final Amp Temperature
: Alarm: 85℃~90℃/ Shutdown: > 90℃
System: Opposite
Final Amp: < 80℃
DC Fail
Output voltage below 80%
DC Recovery
UL VSWR
Return loss < 5dB
Return loss > 7dB
Total Alarm Display
Only System Outside LED
Table 12. Monitoring Alarm Parameters