vswr in rbs6000
DESCRIPTION
hbnTRANSCRIPT
VSWR in RBS6000By Default, no antenna supervision is activated and the supervisionthreshold is set to 0(%).Antenna supervision on applicable sector is activated by enteringantenna supervision threshold values inthe Antenna branch configuration MO.The value is depend of what kind of antenna system used, for example :1. Mode AntennaFormula is used:
RL = 3.3 + 0.22*antennaSupervisionThreshold dB VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))
Note: Mode Antenna only applicable only for branch A.2. Mode ASCFormula is used :
RL = 4 + 0.1*antennaSupervisionThreshold dB VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))
3. Mode TMARL = 3.3 + 0.22*antennaSupervisionThreshold dB
VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))
################### 1. Mode Antenna ###################@ It is enough to set antenna supervision in antenna branch A only.
@ Formula is used: RL = 3.3 + 0.22*antennaSupervisionThreshold dB VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))
@ Example value of antenna supervision threshold If using FU (no aux unit=no ASC/TMA)
Antenna Supervision Threshold
ReturnLoss - calculation
VSWR-calculation
100 25.3 1.1180 20.9 1.250 14.3 1.4849 14.08 1.4940 12.1 1.6630 9.9 1.9420 7.7 2.410 5.5 3.26
5 4.4 4.03
@ If VSWR threshold = 1.5, so value of antenna supervision threshold could be set = 50 @ Example condition from NodeB site :
################## Site 50XXG - RBS6201W ##########################50XXG> get antennabranch supervision=======================================================================================MO Attribute Value=======================================================================================SectorAntenna=1,AntennaBranch=A antennaSupervisionThreshold 50SectorAntenna=1,AntennaBranch=B antennaSupervisionThreshold 0
SectorAntenna=2,AntennaBranch=A antennaSupervisionThreshold 50SectorAntenna=2,AntennaBranch=B antennaSupervisionThreshold 0SectorAntenna=3,AntennaBranch=A antennaSupervisionThreshold 50SectorAntenna=3,AntennaBranch=B antennaSupervisionThreshold 0
50XXG> lh ru fui get vswr =======================================================================================$ lhsh 001200/port_0_dev_6 fui get vswr0012p0d6: Supervision is on0012p0d6: vswr: 24.7[dB] VSWR=1.12=======================================================================================$ lhsh 001200/port_4_dev_7 fui get vswr0012p4d7: Supervision is on0012p4d7: vswr: 23.9[dB] VSWR=1.14=======================================================================================$ lhsh 001200/port_8_dev_8 fui get vswr0012p8d8: Supervision is on0012p8d8: vswr: 25.4[dB] VSWR=1.11=======================================================================================50XXG> alt=======================================================================================Date & Time (Local) S Specific Problem Cause Mo-Reference=======================================================================================>>> Total: 0 Alarms (0 Critical, 0 Major)
@ List of Command: - get antennabranch supervision = to read current value of antenna supervision - lset SectorAntenna=3,AntennaBranch=A antennaSupervisionThreshold 50 = set value 50 for sector-3 branchA - lh ru fui get vswr = to read value of vswr measurement ( in dB) Use this formula "VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))" to get VSWR value.
#################### 2. Mode ASC ####################@ Formula is used : RL = 4 + 0.1*antennaSupervisionThreshold dB VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))
@ Example value of antenna supervision threshold If using ASC
Antenna Supervision Threshold ReturnLoss - calculationVSWR-
calculation100 14 1.580 12 1.6770 11 1.7860 10 1.9250 9 2.1
40 8 2.3230 7 2.6120 6 3.01
10 5 3.57
@ If VSWR threshold = 1.5, so value of antenna supervision threshold could be set = 100
@ Example condition from NodeB site :
############ Site 55YYG - RBS6201W - ############55YYG> get antennabranch supervision=======================================================================================MO Attribute Value=======================================================================================SectorAntenna=3,AntennaBranch=A antennaSupervisionThreshold 100SectorAntenna=3,AntennaBranch=B antennaSupervisionThreshold 100SectorAntenna=1,AntennaBranch=B antennaSupervisionThreshold 100SectorAntenna=1,AntennaBranch=A antennaSupervisionThreshold 100SectorAntenna=2,AntennaBranch=B antennaSupervisionThreshold 100SectorAntenna=2,AntennaBranch=A antennaSupervisionThreshold 100=======================================================================================55YYG> lh asc asc vswr=======================================================================================$ lhsh 001200/port_1_dev_9 asc vswr0012p1d9: Branch:A, VSWR:1.16 (fwdVoltage:3.43V reflVoltage:2.24V fwdPower:28.11dBm reflPower:5.55dBm) 0012p1d9: Branch:B, VSWR:-4.52 (fwdVoltage:1.58V reflVoltage:1.77V fwdPower:-8.22dBm reflPower:-4.32dBm) =======================================================================================$ lhsh 001200/port_5_dev_10 asc vswr0012p5d10: Branch:A, VSWR:1.18 (fwdVoltage:3.28V reflVoltage:2.24V fwdPower:30.74dBm reflPower:9.26dBm) 0012p5d10: Branch:B, VSWR:-2.94 (fwdVoltage:1.63V reflVoltage:1.88V fwdPower:-6.86dBm reflPower:-0.70dBm) =======================================================================================$ lhsh 001200/port_9_dev_11 asc vswr0012p9d11: Branch:A, VSWR:1.06 (fwdVoltage:3.44V reflVoltage:1.83V fwdPower:28.59dBm reflPower:-2.56dBm) 0012p9d11: Branch:B, VSWR:-1.95 (fwdVoltage:1.50V reflVoltage:1.94V fwdPower:-7.73dBm reflPower:2.13dBm) $55YYG> alt=======================================================================================Date & Time (Local) S Specific Problem Cause Mo-Reference=======================================================================================>>> Total: 0 Alarms (0 Critical, 0 Major)
@ List of Command: - get antennabranch supervision= to read current value of antenna supervision - lset SectorAntenna=3,AntennaBranch=A antennaSupervisionThreshold 100 = set value 100 for sector-3 branchA - lh asc asc vswr
#################### 2. Mode TMA ####################@ Formula is used: RL = 3.3 + 0.22*antennaSupervisionThreshold dB VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))
@ Example value of antenna supervision threshold If using FU (no aux unit=no ASC/TMA)
Antenna Supervision Threshold ReturnLoss - calculationVSWR-
calculation100 25.3 1.1180 20.9 1.250 14.3 1.4849 14.08 1.4940 12.1 1.6630 9.9 1.9420 7.7 2.410 5.5 3.26
5 4.4 4.03
@ If VSWR threshold = 1.5, so value of antenna supervision threshold could be set = 50
@ Example condition from NodeB site :
################## Site 50ZZG - RBS6201W - ##########################50ZZG> get antennabranch supervision=======================================================================================MO Attribute Value=======================================================================================SectorAntenna=1,AntennaBranch=B antennaSupervisionThreshold 10SectorAntenna=1,AntennaBranch=A antennaSupervisionThreshold 50SectorAntenna=2,AntennaBranch=A antennaSupervisionThreshold 50SectorAntenna=2,AntennaBranch=B antennaSupervisionThreshold 10SectorAntenna=3,AntennaBranch=A antennaSupervisionThreshold 50SectorAntenna=3,AntennaBranch=B antennaSupervisionThreshold 10=======================================================================================50ZZG> lh ru fui get vswr
101022-15:22:36 10.192.9.137 8.0h RBS_NODE_MODEL_M_1_8 stopfile=/tmp/30096=======================================================================================$ lhsh 001200/port_0_dev_6 fui get vswr0012p0d6: Supervision is on0012p0d6: vswr: 24.8[dB] VSWR=1.12
=======================================================================================$ lhsh 001200/port_4_dev_7 fui get vswr0012p4d7: Supervision is on0012p4d7: vswr: 21.0[dB] VSWR=1.20=======================================================================================$ lhsh 001200/port_8_dev_8 fui get vswr0012p8d8: Supervision is on0012p8d8: vswr: 27.8[dB] VSWR=1.08=======================================================================================50ZZG> alt=======================================================================================Date & Time (Local) S Specific Problem Cause Mo-Reference=======================================================================================>>> Total: 0 Alarms (0 Critical, 0 Major)
@ List of Command: - get antennabranch supervision = to read current value of antenna supervision - lset SectorAntenna=3,AntennaBranch=A antennaSupervisionThreshold 50 = set value 50 for sector-3 branchA - lh ru fui get vswr = to read value of vswr measurement ( in dB) Use this formula "VSWR = (1+10^(-RL/20))/(1-10^(-RL/20))" to get VSWR value.