User's Manual

User Manual
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And the equipment must be as far as possible away from overloading status of “red” (the equipment would
hold higher interference and depression ability at this stage). So we shall try our best to set the equipment
near “edge point” of green and intention of turning orange during engineering.
z 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 Booster’s downlink output power reaches the perfect status.
 If it shines “green” then,
 Please check coverage effect firstly, if the coverage effect is good, the engineering has reached
expecting target, thus there is no need to do anything.
 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 Booster’s downlink
output power reaches the perfect status.
 But if attenuation has not been set, it indicates that the input power is not strong enough to let the
Booster reach its good coverage.
If the coverage effect is not good, the donor antenna should be adjusted to get stronger input signal.
It is recommended that one person shall check the coverage effect inside the building when the
other person is trying to adjust the antenna or the Booster. At this stage, please make sure “Orange”
color will not be generated by self oscillation. Please take off the server antenna to check if it is self
oscillation or not: if the Orange turns to be green, it is self oscillation; if it stays as Orange, it is not
self oscillation. Please follow steps in other page to turn Orange to be Green.
z Uplink gain setting
Standard: uplink attenuation values =downlink attenuation values
Remark: Avoid putting more than a 5dB difference between the Uplink and Downlink. And Uplink gain must
be equal to or less than Downlink gain, it can’t be more in order to avoid interference with mobile network.