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Interface
2012-02-06, 11:08 AM
Dear Experts,
We are using E// 3G equipment. As you know, we have 2 antenna supervision functions at Node B: DC Resistance and VSWR.
Focus on DC Resistance function, when i used "lh ru fui get devstat", the result is contain crossConnect as below:
0009p2d9: Antenna supervision: On (resistance)
0009p2d9: Aux max current consumption supervision: Off
0009p2d9: Aux short circuit supervision: Off
0009p2d9: Aux equip. min voltage/current supervision: Off
0009p2d9: Aux TMA LNA supervision: Off
0009p2d9: Internal LNA supervision: On
0009p2d9: Rx cable supervision: Off
0009p2d9: txFreq: 0 kHz
0009p2d9: sensitivity: 80 percent
0009p2d9: gainUl: 17.0 dB (not bypassed) default
0009p2d9: volt: 9 mV
0009p2d9: curr: 144 mA
0009p2d9: crossConnect: Out

Is there any problem with antenna connection of this cell? What does "crossconnect: out" mean?
Please help me with these questions!

Interface
2012-02-10, 01:59 AM
Who can help me?

Yaaqob1982
2012-02-10, 05:14 AM
also me, i need to know of this value
Antenna supervision
i always make it=0
is it correct?

Interface
2012-02-10, 05:53 PM
It is wrong if you set Antenna Supervision Threshold = 0. I think that you haven't got deep understanding about this parameter and how to set it.
Please reading the RBS Antenna Supervision book in Alex. I copy the formula as below:


For DC Resistance: R = (101-antennaSupervisionThreshold)*0.15 ohm.
For VSWR: RL = 3.3 + 0.22*antennaSupervisionThreshold dB vĂ  VSWR= (1+10^(-RL/20))/(1-10^(-RL/20)).