Page 23 of 25
Setting of “edge point”:
Switch on the power supply after connection with donor antenna and server antenna, and observe
ALARM LED.
If it shines “orange”, use 1dB as step to reduce the gain until “green” turns on, then increase the gain
1~3dB attenuation value until “orange” starts to turn on, then brings back 1~2dB till “green” is on, then
fix the gain and the repeater’s downlink output power reaches the perfect status.
If it shines “green” then,
To check whether the attenuation value has been set, if it is, use 1dB as step to increase gain until
the “orange” turns on, then brings back 1~2dB till “green” is on again , then the repeater’s downlink
output power reaches the perfect status.
But if attenuation is not set, it indicates that the input power is not enough.
Then please check coverage effect first, if the coverage effect is good, the engineering has
reached expecting target
But if the coverage effect is not good, the donor antenna should be adjusted to get a stronger
signals until “orange” intends to turn on or the effect reaches the target. At this stage, please
make sure “Orange” color is not generated by self oscillation. Please take off the server
antenna to test if it is self oscillation or not: if the Orange turns to be Orange, it is self oscillation;
if it stays as Orange, it is not self oscillation.
Uplink gain setting
Standard: uplink attenuation values =downlink attenuation values
Remark: Keep in mind that you do not want to have more than a 5dB difference between the uplink and
downlink values for optimum system performance, and it is better to keep the same attenuation value of
Uplink with that of Downlink.
8.6. System Test
8.6.1. Check whether the coverage is good
1) Have a test with mobile phone or data card (engineering mobile phone is preferred). If the signals in most
areas have not been improved, please check below again:
The weak input signal leads to the low output power. Change the direction of donor antenna or Its
installation position or replace donor antenna with higher gain to increase input signal power level.
Check whether it is necessary to add more server antennas due to barriers, whether the repeater’s
